Kazeminasab, F.,
Marandi, S.M.,
Ghaedi, K.,
Safaeinejad, Z.,
Esfarjani, F.,
Nasr-esfahani, M.H. Publication Date: 2018
Applied Physiology, Nutrition and Metabolism (17155312)43(7)pp. 651-662
The present study was performed to clarify how a combined exercise/diet treatment could affect the expression level of the muscle fibronectin type III domain containing 5 (Fndc5) with respect to body fat mass. Male C57BL/6 mice were divided into 2 groups including low-fat (LF) and high-fat (HF) diets for 12 weeks. Then, LF fed (nonobese) and HF fed mice (obese) were divided into the following 4 groups: HF-Exercise, HF-Sedentary, LF-Exercise, and LF-Sedentary. The exercise group exercised on a motor-driven treadmill for 45 min/day, 5 days/week for 8 weeks. Mice were sacrificed 24 h after the final exercise session. Gastrocnemius muscle and the visceral adipose tissue were excised and frozen for the assessment of proliferator-activated receptor gamma coactivator 1 alpha (Pgc-1α) and Fndc5 messenger RNA (mRNA) and protein levels. Data indicated that protein level of muscle PGC-1α was decreased in HF versus LF groups and in obese versus nonobese mice. Moreover, Fndc5 mRNA levels were increased in the muscle tissue of HF versus LF groups and in obese versus nonobese mice. Also, in the gastrocnemius skeletal muscle, protein levels of FNDC5 were significantly higher in the HF fed mice, as compared with their low-fat fed counterparts, similar to what was observed for exercised versus sedentary mice. Overall, we found that the HF diet increased Fndc5 transcript levels in the skeletal muscle, but exercise had a minimal effect on the transcript level of Fndc5, whereas endurance training increased the protein content of FNDC5 in the skeletal muscle. © 2018, Canadian Science Publishing. All rights reserved.
Publication Date: 2005
Ergonomics (00140139)48(11-14)pp. 1568-1575
Most soccer players have a favoured foot for kicking the ball, and it is believed that this preference may lead to an asymmetry in the strength and flexibility of the lower extremities. This study was designed to determine whether asymmetry in strength and flexibility are present in the legs of soccer players. Forty-one elite and sub-elite soccer players (age 23.4 ± 3.8 years; height 1.81 ± 0.06 m; body mass 81.7 ± 9.9 kg) were studied (data are presented as mean ± SD). The dynamic strength of knee flexors (hamstrings) and knee extensors (quadriceps) was measured using an isokinetic dynamometer at angular velocities of 1.05, 2.09, 5.23 rad/s (in a concentric mode) and 2.09 rad/s (in an eccentric mode). The concentric strength ratio (hamstringsconc/quadricepsconc) and the dynamic control ratio (hamstringsecc/quadricepsconc) were computed. Hip joint flexibility (in flexion) was measured using a goniometer. A significant difference between the preferred and non-preferred leg was found in the knee flexors at 2.09 rad/s (119 ± 22 versus 126 ± 24Nm; P < 0.05) and for the dynamic control ratio (0.79 ± 0.13 versus 0.84 ± 0.16Nm; P < 0.05). In both cases the knee flexors of the preferred leg were weaker than those of the non-preferred leg. A total of 28 of the 41 players (68%) had significant musculoskeletal abnormality (imbalance 410%) in one or more specific muscle groups. No significant differences were found in flexibility of the hip joint between the preferred and non-preferred leg (P < 0.05). It is concluded that the lower strength of the knee flexor muscl es of the preferred leg may be associated with the differential use of these muscle during the kicking action and thus constitutes a unique training effect associated with soccer. This in turn can lead to muscular imbalance which is generally regarded as an injury risk factor. © 2005 Taylor & Francis.
Publication Date: 2015
Journal of Military Medicine (17351537)16(4)pp. 231-236
Aims: According to the role of exercise on the rate of occupational burnout, the purpose of this research was to compare occupational burnout among athletic and non-athletic military personnel in a military training center in order to evaluate the role of exercise on occupational burnout. Methods: In this descriptive - comparative research, 250 staff from an army training center in the Isfahan province, were selected as an available sample. In order to determine the level of occupational burnout and the rate of physical activity, the Jackson Maslach and Beck questionnaires were used. In the end, data were collected, and were analyzed using t-test as well as Pearson correlation and SPSS 17 software. Results: The most important finding in this study was that all the three dimensions of occupational burnout including emotional exhaustion, depersonalization and decreased personal achievements were lower in athletic military staff compared to the non-athletic staff. Conclusion: As a conclusion, findings reveal that sport and physical activities can increase human being capacity to cope with psychological pressures in the workplace. © 2015, Bagiatallah University of Medical Science. All rights reserved.
Publication Date: 2002
Physical Therapy in Sport (1466853X)3(4)pp. 183-190
Notation analysis has now gained wide use in the assessment of competitive football play. Computer-aided methods have largely replaced the use of hand-notation systems. Whilst a hand-notation approach has been adopted previously in assessing injury-risk in football, the recording and analysing of events with injury potential are time-consuming. In this report, a computerised system of notating incidents in the game is described. Key incidents are monitored with respect to degree of injury potential, location and other factors. The use of the system is illustrated by comparing home and away performances in Premier League matches between Manchester United and Liverpool F.C. The system has advantages in speed and accuracy of handling data related to injury and injury risk. © 2002 Elsevier Science Ltd. All rights reserved.
Movahedi, A.,
Sheikh, M.,
Bagherzadeh, F.,
Hemayattalab, R.,
Ashayeri, H. Publication Date: 2007
Journal of Motor Behavior (00222895)39(6)pp. 457-462
The authors propose a practice-specificity-based model of arousal for achieving peak performance. The study included 37 healthy male physical education students whom they randomly assigned to a high-arousal (n = 19) or low-arousal group (n = 18). To manipulate participants' level of arousal, the authors used motivational techniques. They used heart rate and the Sport Competition Anxiety Test (R. Martens, 1977) to measure the level of arousal that participants achieved. At the determined and given arousal state, the 2 groups performed the task (basketball free throws) for 18 sessions. Both groups performed a retention test at the 2 arousal levels immediately after the last exercise session, in the posttest, and after 10 days. Results showed that both groups learned the task similarly and achieved their peak performance at their experienced arousal level. When tested at an arousal level that differed from the one that they experienced throughout practice sessions, participants' performance had deteriorated significantly. Performance of the task seemed to have integrated with the arousal level of the participants during the task learning. The findings of this study suggest a practice-specificity-based explanation for achieving peak performance. Copyright © 2007 Heldref Publications.
Publication Date: 2015
Genetics in the Third Millennium (24237159)12(4)pp. 3806-3822
Neurotrophins have been recognized as the main trophic factors in the nervous system. They are a broad family of polypeptide growth factors and the main factors responsible for the modulation of synaptic development. They share a common basic structure but in certain areas which connect to their specific receptors. Thus, they execute different actions triggering survival or apoptosis pathways. One way to increase the activity of neurotrophins in different synapses and neurons is increasing the number of respective receptors on the cell surface. The main member of this family is Brain-Derived Neurotrophic Factor that is constructed by neurons, especially those located in the hippocampus and cortex which are involved in learning and memory. Thereby, its expression is regulated by central neurotransmitter and peripheral hormones. Many of the brain abilities to adapt or change in response to experiences or the environment depend on the synaptic neuronal plasticity and connections. However, the molecular mechanisms that translate neuronal activity patterns for specific changes in synapses are not clearly understood. © 2014, Iranian Neurogenetics Society. All rights reserved.
Publication Date: 2023
Journal of Bodywork and Movement Therapies (15329283)36pp. 125-132
Introduction: Firefighting is a high-risk job with a high prevalence of work-related musculoskeletal disorders (WMSDs). The aim of his study was to determine the prevalence of WMSDs, estimate the likelihood of subsequent disorders, and investigate the effect of NASM-based training protocol on firefighters function. Method: First, prevalence and region of WMSDs in all 524 male Isfahan firefighters were determined by Medical-history-questionnaire. Then, functional movement screen (FMS) separated firefighters to the 2-dimension FMS score (FMSCS≤14 or FMSCS>14) to show at risk firefighters. Finally, 40 Participants with both FMSCS≤14 and common WMSDs randomly assigned to either an intervention (IG) (n = 20) or control (CG) (n = 20) group. The IG received NASM-based training, while the CG engaged in daily activities. Outcomes included movement efficiency during landing error scoring system-real time, Y balance, single-leg squat, and deep squat, which were assessed in pretest and posttest. Results: The prevalence of disorders was 52.1%, which lower limb, back, upper limb, and neck were the highest prevalence respectively. Only lower limb and back disorders could identify individuals at disorder risk with a likelihood of 89% and 71%, sequentially. Also, movement performance significantly improved in all functional tests in IG relative to CG. Conclusions: Considering high disorder rate in firefighters, the value of our study lies in alleging a systematic model periodically to reduce WMSDs and risk of subsequent disorders. Not only our model determined the prevalence of WMSDs, but it also identified those who are at risk. In addition, our model represents exercise therapy as a solution. © 2023 Elsevier Ltd
Rahmani-nia f., F.,
Rahnama, N.,
Hojjati z., ,
Soltani b., Publication Date: 2008
Sport Sciences for Health (18247490)2(3)pp. 118-124
Six young obese females (20.5±1.22 years; BMI=34.5±4.3 kg/m2) participated in a resistance exercise (RE) protocol (12 exercises, 4 sets × 15 repetitions at 60% of 1RM), an aerobic exercise (AE) protocol (3 sets × 10 min ergometer cycling at 60% of maximal heart rate with 5 min of rest between sets), and a control session. Blood samples were collected before, and immediately after and 10 h after exercise. All protocols were done in follicular phase of the menstrual cycle. ANOVA (3×3) with repeated measure on exercise (3 levels) and time (3 levels) factors was used to determine the effects of exercise protocol, time and exercise protocol by blood sampling time interaction, triglycerides, HDL-cholesterol, LDL-cholesterol, and glucose concentrations. Immediately and 10 h after AE, serum leptin was significantly lower (p <0.05). Serum insulin after AE was lower than after RE and control sessions (p <0.05). Furthermore, no significant differences were found in serum leptin and insulin between RE and control sessions immediately after and 10 h after exercise. Blood glucose, triglycerides, total cholesterol, HDL-cholesterol and LDL-cholesterol were unchanged in both exercise protocols. In conclusion, AE resulted in a serum leptin reduction and suppressed the circadian rhythm of serum insulin when sampled immediately and 10 h after exercise; instread, RE did not result in serum leptin or insulin changes. © Springer-Verlag Italia 2008.
Publication Date: 2018
Acta Diabetologica (14325233)55(9)pp. 893-899
Aims: MicroRNAs (miRs) that are mediators of gene expression have been implicated in type 2 diabetes mellitus (T2DM). Platelet hyper-reactivity is one of the most important disorders in T2DM patients. In this study, we explored the effects of aerobic training (AT) on platelet aggregation and Glycoprotein IIb (GPIIb) receptor and miR-130a expression. Methods: In a quasi-experimental controlled trial, 24 sedentary, eligible female participants with T2DM were selected (age 61.92 ± 3.63) and divided into AT and control (CON) groups based on their peak oxygen consumption (VO2peak). AT protocol was performed three times per week in non-consecutive days on a treadmill with mean intensity (60–75% VO2peak) for 8 weeks, while the control group refrained from any type of exercise training. Two blood samples were taken before and after this period. Real-time PCR was used to determine the expression of platelet GPIIb and miR-130a. Moreover, platelet indices (PLT, MPV, PDW, and PCT), collagen-induced platelet aggregation and glycemic variables were measured. Results: Analyses of data showed that anthropometric variables, VO2peak and glycemic control improved significantly (P < 0.01) after AT. Furthermore, MPV, PDW (P < 0.01), and platelet aggregation (P < 0.001) decreased significantly following AT compared with control group. Platelet GPIIb expression down-regulated significantly (P < 0.05) in AT group but up-regulation of miR-130a expression was not significant between two groups (P > 0.05). Conclusions: Platelet hyper-reactivity in T2DM females might be decreased not only by glycemic control and amelioration of anthropometric and platelet indices, but also the down-regulation of GPIIb following AT. However, more research is needed to determine the effects of exercise training on platelet miR-130a. © 2018, Springer-Verlag Italia S.r.l., part of Springer Nature.
Publication Date: 2022
Archives of Gerontology and Geriatrics (18726976)98
Exercise can alleviate the disorders considered as the normal consequences of aging. Whether or not the treadmill endurance training affects the biochemical markers in the Parkinson's disease model rats after the 6-hydroxydopamine (6-OHDA) injection is assessed in this article. The experimental groups of N=8 rats consist of 1) Saline and Young sedentary (S-Young); 2) Saline and Old sedentary (S-Old); 3) Young and 6-OHDA without exercise (Y); 4) Young and 6-OHDA with exercise (YE); 5) Old and 6-OHDA without exercise (O); and 6) Old and 6-OHDA with exercise (OE). An 8 μg of 6-OHDA is injected into the right MFB. The rotation due to apomorphine, weight variation, and some biochemical expression are measured in the rats’ striatum. Exposure to 6-OHDA: increase weight loss by (%8) and rotation by (%90), reduce the protein levels of Bdnf by (30%), Th by (43%), and Tfam by (24%), in aging rats (P<0.05). The P53 level rose after the injection compared with the same Saline group (Old rats: 27% and Young rats: 14%), the highest in the O group. The findings indicate that endurance exercise amends the mitochondrial parameters and the apomorphine-induced rotation impairments in the presence of 6-OHDA injection. These positive effects of treadmill running in unilateral 6-OHDA lesioned rat model are age-dependent and are more significant in younger rats. © 2021
Publication Date: 2020
Journal of Babol University of Medical Sciences (15614107)22(1)pp. 92-100
BACKGROUND AND OBJECTIVE: Due to the proximity of epicardial adipose tissue (EAT) to the myocardial tissue, it is considered that EAT be more pathogenic than subcutaneous adipose tissue. The aim of this study was to evaluate the alterations of PGC-1α andUCP1 gene expression in EAT and orexin-A following aerobic exercise in high-fat diet induced and obese male wistar rats. METHODS: In this study, 32 male wistar rats aged 6-week and weight of 180-200 g, assigned randomly in: 1) Normal fat diet (NFD), 2) High-fat diet induced obesity (HFDO), 3) Normal fat diet after high-fat diet induced obesity group (HFDO-NFD) and Aerobic exercise group with normal fat diet after high-fat diet induced obesity group (HFDO-AEX). After obesity-induced in HFDO group (8-week diet with 60% fat) and 48 hours after eight weeks of aerobic exercise (60% of maximal training capacity, 4 sessions/week) in other groups, fasting levels of OXA, Lee index, lipid profile, and gene expression of PGC-1α and UCP1 in EAT have been measured. FINDINGS: The results revealed that HFD significantly decreased serum OXA, HDL-c, gene expression of PGC1α and UCP1, also caused a significant increase in Lee index, TG, LDL-c, cholesterol and EAT mass (p≤0.001), but aerobic exercise significantly improved the OXA (34.74%), HDL-c (23.65%), gene expression of PGC-1α and UCP1 (61.28% and 82.67%), lipid profile, EAT mass (76.19%) and Lee index (18.34%) to the normal levels (P≤ 0.001). CONCLUSION: Aerobic exercise by affecting OXA and gene expression of PGC-1α and UCP1 in EAT, probably could reduce the risk factors of cardiovascular diseases due to high-fat diet. © 2020, Babol University of Medical Sciences. All rights reserved.
Publication Date: 2022
Iranian Journal Of Basic Medical Sciences (20083874)26(8)pp. 1016-1020
Objective(s): Multiple sclerosis (MS) is a chronic inflammatory disease affecting sensory and motor function in the central nervous system. Physical activities in the prevention and treatment of such conditions have shown promising results. However, their mechanisms of action have not been fully known yet and need further study. The present study aimed to evaluate the preventive effect of swimming exercise on some liver factors involved in inflammation and MS. Materials and Methods: In this study, experimental autoimmune encephalomyelitis was induced in C57BL/6 mice, and the effect of a 6-week swimming exercise on the levels of fetuin-A, AMP-activated protein kinase (AMPK), and Nicotinamide adenine dinucleotide (NAD+) in their liver tissue was investigated by western blot analysis and NAD+ colorimetric assay. Results: The study showed that EAE induction substantially (3.5 - fold) enhanced the fetuin-A levels and caused a reduction in AMPK and NAD+ amount. This is when doing 6 weeks of swimming exercise reduced fetuin-A to slightly above control. Also, levels of AMPK and NAD+ markedly increased in C57BL/6 mice with EAE. Conclusion: Doing regular exercise may limit the body’s inflammatory responses and reduce the severity of MS by regulating the expression of fetuin-A and increasing AMPK and NAD+ levels in liver tissue. © 2022 Mashhad University of Medical Sciences. All rights reserved.
Publication Date: 2004
Cellular and Molecular Biology Letters (16891392)9(4 A)pp. 773-775
Publication Date: 2024
Journal of Facilities Management (17410983)22(5)pp. 869-882
Purpose: In terms of the use of sports places and spaces, per capita is a determining parameter for the status and perspective of the future. Although there are many uses for the per capita indicator in sports places, there are no consistent scientific and methodological methods for calculating it. Therefore, this study aims to provide an analytical model to determine the per capita index of sports places and spaces. Design/methodology/approach: One of the matters that can be considered as the basic information required to develop and construct sports facilities is determination of per capita, which can be used as the most vital information to plan and develop this type of urban utilities. In the history of contemporary urbanization, the use of the per capita concept is one of Reinhard Laumeister’s innovations, a founder of modern urban engineering in Germany, hence, the use of per capita was triggered in 1876, almost 133 years ago. Findings: The underlying information of the research in two spatial and descriptive sections was analyzed in the geographic information systems (GIS) software. After the division and network distribution of the boundary by the Thiessen Networks analytic function in the Arc GIS, per capita of each polygon was separately calculated using the presented formula and the population of the related blocks Originality/value: Finally, with the qualitative per capita achieved in the previous stage, the study area was classified based on the need for the development of indoor pools to three, privileged, semi-privileged and deprived spectrums. © 2022, Emerald Publishing Limited.
Publication Date: 2025
Trends in Sport Sciences (2391436X)32(2)pp. 123-133
Introduction. Sport provides a platform for positive youth development by allowing young people to acquire essential life skills. Aim of Study. This study examined how participants’ life skills development in sport is influenced by the length of their experience in sport, weekly participation hours, and satisfaction of their three basic psychological needs. Material and Methods. The study included 317 Iranian university students (Mage = 22.3 years; females = 222, males = 95) engaged in sport or exercise. Two validated measures assessed participants’ basic psychological needs satisfaction and life skills development in sport, with the data collected via an online questionnaire and analyzed using SPSS 28.0. Hierarchical multiple regression analysis included length of experience in sport and weekly participation hours as predictors in block 1, and autonomy, competence, and relatedness satisfaction as predictors in block 2. Results. The results indicated that both length of experience in sport and weekly participation hours were positively associated with participants’ development of eight different life skills. After controlling for length of experience in sport and weekly participation hours, satisfaction of autonomy, competence, and relatedness were positively related to all eight life skills. Of the three basic psychological needs, autonomy satisfaction had the strongest positive relationships with participants’ life skills development. Conclusions. Coaches and parents should encourage consistent participation in order to maximize the life skills benefits of sport, and create supportive environments that fulfill participants’ three basic psychological needs. © 2025, University School of Physical Education. All rights reserved.
Publication Date: 2018
Performance Enhancement and Health (22112669)6(1)pp. 36-42
A lateral positioned patella has long been regarded as a major contributing factor in the development of patella femoral pain (PFP). Despite extensive research, there is still little consensus as to the most effective treatment strategy for the management of patients with lateral patellar displacement (LPD). Computational intelligence methods are proving useful aids to physicians and other medical staff, improving objectivity when making diagnostic and treatment decisions and reducing the time to make decisions. This study describes an adaptive network-based fuzzy inference system (ANFIS) used to build a model for the indirect prediction of rehabilitation treatment outcomes for females with LPD from only demographic and clinical characteristics. The prediction abilities offered using two ANFIS models are presented using data from 48 female patients referred to rehabilitation clinics of Isfahan Ayatollah Kashani and Al Zahra hospitals, Iran. The results indicate that the ANFIS model has strong potential to improve indirect prediction of rehabilitation treatment for females with LPD with a high degree of accuracy and robustness. © 2017
Bagheri, R.,
Karimi, Z.,
Camera, D.M.,
Scott, D.,
Bashirzad, M.Z.,
Sadeghi, R.,
Kargarfard, M.,
Dutheil, F. Publication Date: 2024
Frontiers in Nutrition (2296861X)11
Background: We assessed the relationship of changes in upper and lower body lean mass with muscle strength, endurance and power responses following two high protein diets (1.6 or 3.2 g.kg-1.d−1) during 16 weeks of either concurrent training (CT) or resistance training (RT) in resistance-trained young males. Methods: Forty-eight resistance-trained young males (age: 26 ± 6 yr., body mass index: 25.6 ± 2.9 kg.m−2) performed 16 weeks (four sessions·wk.−1) of CT or RT with either 1.6 g.kg-1.d−1 protein (CT + 1.6; n = 12; RT + 1.6; n = 12) or 3.2 g.kg-1.d−1 protein (CT + 3.2; n = 12; RT + 3.2; n = 12). Relationships between upper (left arm + right arm + trunk lean mass) and lower body (left leg + right leg lean mass) lean mass changes with changes in muscle performance were assessed using Pearson’s correlation coefficients. Results: For upper body, non-significant weak positive relationships were observed between change in upper body lean mass and change in pull-up (r = 0.183, p = 0.234), absolute chest press strength (r = 0.159, p = 0.302), chest press endurance (r = 0.041, p = 0.792), and relative chest press strength (r = 0.097, p = 0.529) while non-significant weak negative relationships were observed for changes in absolute upper body power (r = −0.236, p = 0.123) and relative upper body power (r = −0.203, p = 0.185). For lower body, non-significant weak positive relationships were observed between the change in lower body lean mass with change in vertical jump (r = 0.145, p = 0.346), absolute lower body power (r = 0.109, p = 0.480), absolute leg press strength (r = 0.073, p = 0.638), leg press endurance (r < 0.001, p = 0.998), relative leg press strength (r = 0.089, p = 0.564), and relative lower body power (r = 0.150, p = 0.332). Conclusion: Changes in muscle strength, endurance and power adaptation responses following 16 weeks of either CT or RT with different high protein intakes were not associated with changes in lean mass in resistance-trained young males. These findings indicate that muscle hypertrophy has a small, or negligible, contributory role in promoting functional adaptations with RT or CT, at least over a 16-week period. Copyright © 2024 Bagheri, Karimi, Camera, Scott, Bashirzad, Sadeghi, Kargarfard and Dutheil.
Publication Date: 2019
International Journal of Sports Physiology and Performance (15550265)14(8)pp. 1050-1057
Purpose: To investigate the relationship between accumulated global positioning system–accelerometer-based and heart rate–based training metrics and changes in high-intensity intermittent-running capacity during an in-season phase in professional soccer players. Methods: Eleven male professional players (mean [SD] age 27.2 [4.5] y) performed the 30-15 Intermittent Fitness Test (30-15IFT) before and after a 5-wk in-season training phase, and the final velocity (VIFT) was considered their high-intensity intermittent-running capacity. During all sessions, Edwards training impulse (Edwards TRIMP), Banister TRIMP, Z5 TRIMP, training duration, total distance covered, new body load (NBL), high-intensity running performance (distance covered above 14.4 km·h−1), and very-high-intensity running performance (distance covered above 19.8 km·h−1) were recorded. Results: The players’ VIFT showed a most likely moderate improvement (+4.3%, 90% confidence limits 3.1–5.5%, effect size 0.70, [0.51–0.89]). Accumulated NBL, Banister TRIMP, and Edwards TRIMP showed large associations (r = .51–.54) with changes in VIFT. A very large relationship was also observed between accumulated Z5 TRIMP (r = .72) with changes in VIFT. Large to nearly perfect within-individual relationships were observed between NBL and some of the other training metrics (ie, Edwards TRIMP, Banister TRIMP, training duration, and total distance) in 10 out of 11 players. Conclusions: Heart rate–based training metrics can be used to monitor high-intensity intermittent-running-capacity changes in professional soccer players. The dose–response relationship is also largely detected using accelerometer-based metrics (ie, NBL) to track changes in high-intensity intermittent-running capacity of professional soccer players. © 2019 Human Kinetics, Inc.
Publication Date: 2014
Iranian Studies (00210862)47(6)pp. 951-966
Women's sport has always been a challenging subject in Muslim countries and Muslim women have had to face various constraints regarding their participation in sport and exercise, which also influence their attitudes to sport. This study aims to explore the attitude of Iranian female university students toward sport by survey method (N = 1,120) and qualitative interviews (N = 50). The results indicate that the majority of the participants have negative attitudes to sport, and accordingly they do not practice it. Various macro-, meso-and micro-level factors were found as perceived barriers. From the results it can be concluded that the media as a tool for raising awareness to providing role models and shaping the social values of mainstream society does not take a positive role in order to develop the culture of women's sport, and to change the attitude of female students and their social environments to sport in Iranian society. © 2013 The International Society for Iranian Studies.
Publication Date: 2013
Arya Atherosclerosis (22516638)9(2)pp. 150-156
BACKGROUND: Few studies have investigated changes in autonomic function after training in patients with cardiovascular diseases, particularly patients with congestive heart failure (CHF). Heart rate recovery (HRR) is a strong predictor of mortality in CAD patients. The aim of this study was to determine the effect of 8 weeks of supervised exercise training on autonomic function, which were assessed by heart rate, systolic blood pressure (SBP), and rate-pressure product (RPP) in CHF patients. METHODS: 65 patients aged 57-82 years with CHF were assigned to two groups randomly. The first group received a supervised 8-week aerobic training program of 30-45 min sessions, 3 days per week on alternate days, while controls received standard medical care and were followed up. Body weight, body mass index, functional capacity, resting heart rate, HRR, resting systolic blood pressure, peak heart rate, peak systolic blood pressure, and RPP were measured before and after the study period. Medications and diet recommendations remained unchanged in both groups during the study period. RESULTS: The exercise group consisted of 33 patients with mean age of 61.54 ± 5.89 years and the controls were 32 patients with mean age of 60.94 ± 5.03 years. One-way analysis of variance (ANOVA) with repeated measures revealed a statistically significant difference in the exercise group compared to the control group regarding body mass index, resting heart rate, heart rate recover, functional capacity, peak heart rate, peak systolic blood pressure, peak RPP after 8 weeks (P ≤ 0.05). CONCLUSION: In conclusion, a multidisciplinary CR program with supervised exercise training support significantly improves functional capacity and autonomic function in CHF patients. Therefore, a supervised and guided exercise training program is safe and beneficial for patients with CHF with different etiologies.
Daneshjoo, A.,
Rahnama, N.,
Mokhtar a.h., A.H.,
Yusof a., A. Publication Date: 2013
Journal of Human Kinetics (16405544)36(1)pp. 45-53
This study investigated bilateral and unilateral asymmetries of strength and flexibility in male young professional soccer players. Thirty-six soccer players (age: 18.9 ± 1.4 years) participated in this study. A Biodex Isokinetic Dynamometer was used to assess the hamstring and quadriceps strength at selected speeds of 60°/s, 180°/s and 300°/s. Hip joint flexibility was measured using a goniometer. No difference was observed in conventional strength ratio, dynamic control ratio and fast/slow speed ratio between the dominant and non-dominant legs (p>0.05). All but one of the players (97.2%) had musculoskeletal abnormality (bilateral imbalance > 10%) in one or more specific muscle groups. The dominant leg had greater hip joint flexibility compared with the non-dominant leg (108.8 ± 10.7° versus 104.6 ± 9.8°, respectively). The findings support the hypothesis that physical performance and movement pattern experienced during soccer playing may negatively change the balance of strength in both legs (bilateral strength balance), but not on the same leg of the young male professional soccer players. The results can be helpful for trainers and coaches to decide whether the players need to improve their balance and strength which in turn may prevent injury. It is suggested that in professional soccer training, quadriceps and hamstrings muscle strength, as well as hip joint flexibility should not be overlooked. © Editorial Committee of Journal of Human Kinetics.
Publication Date: 2022
Knee (18735800)37pp. 3-9
Background: Bilateral symmetry evaluation in lower limb is used for injury prevention, and is an indicator of returning to post-injury activity. The aim of present study was to investigate the effect of different angular velocities on asymmetry of the hamstring-to-quadriceps strength ratio. Method: Isokinetic concentric hamstring to quadriceps (H:Q) peak torque ratio of the 27 male and female professional basketball players was measured at seven angular velocities (60, 90, 120, 150, 180, 180, 240, 300 deg s−1) on both dominant and non-dominant legs with Biodex Isokinetic Dynamometer. Repeated measure analysis of variance was used to assess the effects of angular velocity and limb side on our outcomes (p ≤ 0.05). Results: The results showed that with increasing angular velocity, the ratio of hamstrings to quadriceps increases (p = 0.001). There was no difference between dominant and non-dominant limbs in the H:Q peak torque ratio (p = 0.254). In addition, velocity of measurement did not affect the bilateral asymmetry of peak torque ratio of the H:Q of both sides (p = 0.852). Conclusions: Based on the results of this study, it can be concluded that measurement velocity does not affect the bilateral asymmetry of the H:Q peak torque ratio of the dominant and non-dominant limbs. In clinical assessments of H:Q bilateral asymmetry, we suggest that physical trainer can assess bilateral asymmetry of H:Q with arbitrary angular velocities. © 2022 Elsevier B.V.
Farsani, M.A.,
Banitalebi, E.,
Faramarzi, M.,
Bakhtiari, N.,
Rahimi m., M.,
Duque, G. Publication Date: 2023
CHEMICO-BIOLOGICAL INTERACTIONS (00092797)370
Natural bioactive compound, Ursolic acid (UA), plus different types of exercise may exert the action on glycemic control, leading to clinical benefits in the prevention and treatment of aging/diabetes-associated complications. So, this study examined the effects of eight weeks combination of 250 mg of UA per day per kilogram of body weight of rat as well as resistance/endurance training on miR-133a expression across serum, bone marrow, skeletal muscle, and Connexin 43 (Cx43)-Runt-related transcription factor 2 (Runx2) signaling axis in high-fat diet and low-dose streptozotocin-induced T2D (here, HFD/STZ-induced T2D). The study was conducted on 56 male Wistar rats (427 +/- 44 g, 21 months old), having HFD/STZ-induced T2D randomly assigned into 7 groups of 8 including (1) sedentary non-diabetic old rats (C); (2) sedentary type 2 diabetes animal model (D); (3) sedentary type 2 diabetes animal model + UA (DU); (4) endurance-trained type 2 diabetes animal model (DE); (5) resistance-trained type 2 diabetes animal model (DR); (6) endurance-trained type 2 diabetes animal model + UA (DEU); and (7) resistance-trained type 2 diabetes animal model + UA (DRU). Resistance training included a model of eight weeks of ladder resistance training at 60-80% maximal voluntary carrying capacity (MVCC) for five days/week. Treadmill endurance exercise protocol included eight weeks of repetitive bouts of low-/high-intensity training with 30%-40% and 60%-75% maximal running speed for five days/week, respectively. UA Supplementary groups were treated with 500 mg of UA per kg of high-fat diet per day. The results revealed significant supplement and exercise interaction effects for the BM miR-133a (p = 0.001), the bone marrow Runx2 (p = 0.002), but not the serum miR-133a (p = 0.517), the skeletal muscle miR-133a (p = 0.097) and the Cx43 (p = 0.632). In conclusion, only eight weeks of resistance-type exercise could affect miR-133a profile in muscles and osteoblast differentiation biomarker RUNX2 in aged T2D model of rats. 250 mg of UA per kilogram of body weight rat per day was administered orally, less than the sufficient dose for biological and physiological impacts on osteoblast differentiation biomarkers in aged T2D model of rats following eight weeks.
Shariat, A.,
Cleland, J.A.,
Danaee, M.,
Alizadeh, R.,
Sangelaji, B.,
Kargarfard, M.,
Ansari, N.N.,
Sepehr, F.H.,
Bahri mohd tamrin, S. Publication Date: 2018
Work (18759270)60(4)pp. 549-554
BACKGROUND: There are many potential training exercises for office workers in an attempt to prevent musculoskeletal disorders. However, to date a suitable tool to monitor the perceived exertion of those exercises does not exist. OBJECTIVE: The primary objective of this study was to examine the validity and reliability of the Borg CR-10 scale to monitor the perceived exertion of office exercise training. METHODS: The study involved 105 staff members employed in a government office with an age range from 25 to 50 years. The Borg CR-10 scale was self-administered two times, with an interval of two weeks in order to evaluate the accuracy of the original findings with a retest. Face validity and content validity were also examined. RESULTS: Reliability was found to be high for the Borg CR-10 scale (0.898). Additionally a high correlation between the Borg CR-10 scale and Visual Analog Scale (VAS) was identified (rs = 0.754, P < 0.01). CONCLUSIONS: This study found the Borg CR-10 scale to be a reliable and valid tool for monitoring the perceived exertion of office exercise training and may potentially be useful for occupational therapists to measure physical activity intensity levels. © 2018 - IOS Press and the authors. All rights reserved.
Publication Date: 2012
Arya Atherosclerosis (22516638)8(3)pp. 2-2
BACKGROUND: Current guidelines recommend cardiac rehabilitation programs (CRP) as a means to improve functional status of patients after coronary revascularization. However, research supporting this recommendation has been limited and positive effects of CRP on diastolic function are controversial. The aim of this study was to examine the effects of an 8-week CRP on left ventricular diastolic function. METHODS: This randomized, clinical trial included 29 men with ST elevation myocardial infarction (MI) who had received reperfusion therapy, i.e. coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI). They were randomized to a training group (n = 15; mean age: 54.2 ± 9.04 years old) and a control group (n = 14; mean age: 51.71 ± 6.98 years old). Patients in the training group performed an 8-week CRP with an intensity of 60-85% of maximum heart rate. Exercise sessions lasted 60-90 minutes and were held three times a week. At the start and end of the study, all patients performed symptom-limited exercise test based on Naughton treadmill protocol. Pulsed-wave Doppler echocardiography was also used to determine peak velocity of early (E) and late (A) waves, E/A ratios, and the deceleration time of E (DT). RESULTS: Left ventricular diastolic indices (E, A, E/A ratio, DT) did not change significantly after the CRP. Compared to baseline, patients in the training group had significant improvements in functional capacity (8.30 ± 1.30 vs. 9.7 ± 1.7) and maximum heart rate (118.50 ± 24.48 vs. 126.85 ± 22.75). Moreover, resting heart rate of the training group was significantly better than the control group at the end of the study (75.36 ± 7.94 vs. 79.80 ± 7.67; P < 0.001). CONCLUSION: An 8-week CRP in post-MI patients revascularized with PCI or CABG led to improved exercise capacity. However, the CRP failed to enhance diastolic function.
Publication Date: 2015
Journal of Military Medicine (17357667)17(2)pp. 107-114
Aims: The aim of this study was to investigate the prediction of injuries in Iranian soldiers with the Functional Movement Screening. Methods: All the subjects were evaluated before the beginning of the trainings. The FMS tests including the deep squat, hurdle step, in-line lunge, shoulder mobility, straight leg raise, trunk stability push-up and rotary stability were used for the subjects' evaluation. They were monitored for musculoskeletal injuries resulting through a 7-month basic combat training period. Results: At least one musculoskeletal injury had been suffered by 42% of the cadets during the observation period. Logistic regression modeling indicated that the subjects who had a lower FMS score demonstrated higher injury risks (p=0.001). Also, considering the ROC curve and the Yourdon's index, the score of 14 was considered as a cut-off point. Therefore cadets whom FMS scores were lower than 14, were considered 5.6 time higher than the other soldiers exposed to lower extremities injury ROC curve with a cut-off point equal to 14 which shows sensitivity of 0.83 and a specificity of 0.93. Conclusion: We can conclude from this study that functional movement screening can predict lower extremity injuries during medical in-processing.
