مطالب

Background : Volleyball is known as sport that requires high physical fitness, including muscle power, agility and reaction; hence, body composition and anthropometric features play important roles in this field. The purpose of this study was to investigate the relationship between anthropometric and body composition indices with lower limb explosive power in female volleyball players. Material and method : This correlational study was conducted in which 16 semi-professional female volleyball players with an average age of 20.4 ± 1.34 years and BMI of 22.09 ± 3.42 kg/m2 voluntarily participated. All volleyball players had a history of participation in the Tehran province volleyball league. First, data were collected and recorded by demographic questionnaire. Then, the body composition (fat percentage, muscle mass, visceral fat) was measured and recorded in the 3-hours fasting condition by body analysis device (OMRUN Bf511). Finally, Sargent Vertical Jump Test was used to evaluate explosive power of the lower limb muscles. Results :  Pearson correlation coefficient was used at the significant level p Conclusion: The results of this study show that resistance training along with volleyball specific power training can increase the muscle mass as well as it is at the same time.

Background: Increasing prevalence rate of anxiety disorders in elderly populations especially due to physical limitations has become a key concern for health authorities. Aim : The objective of the study was to investigate the effects of cognitive and physical training on physiological and psychological Levels of anxiety in the elderly. Material and Methods: Forty-nine aged females (62.3±2.6 years) with BMI of 35-49.99 kg/m<sup>2 were assigned to one of three groups: Cognitive (n= 17), Physical training [yoga] (n= 16) and control group (n= 10). The cognitive training protocol included breathing and imagery/visualization techniques, which lasted for an 8-week period, three sessions a week. Yoga practices comprising Asana and Pranaya training, three times a week, for two months. The State-Trait Anxiety Inventory was given before and after intervention training. Biofeedback devices was used to monitor galvanic skin resistance and resting heart rate (as physiological and psychological markers of anxiety) in pretest and pre-test phases. The data were analyzed using analysis covariance and Bonferroni post hoc test. Results: It was indicated that anxiety score in cognitive training was significantly lower than control group ( P = 0.002) and also, anxiety score in physical Training was significantly lower than control group ( P = 0.01). No significant difference was found between the two training groups ( P = 0.18). Furthermore, both training groups had lower galvanic skin resistance ( P < 0.001). In addition, physical training group had a better status of resting heart rate after intervention compared to the cognitive and control groups (respectively, P = 0.04 and P = 0.001). Conclusions: It was concluded that the health benefits of Physical training [yoga] isn’t not specific to maintaining physical health, but also extends to lowering the anxiety in elderly with obesity. It was also suggested that cognitive training can mitigate the anxiety symptoms in the elderly while no physical changes were shown in cognitive training.

Background : Chronic low back pain (LBP) is one of the most frequent causes of disability in women. Aim: The main purpose of the current study was to compare the effects of yoga, TRX, and exercise-related combination programs on pain and lordosis in women with increased lordosis and LBP. Materials and Methods: In this study, 40 women based on the study's criteria were included in the pre-intervention assessments and randomly divided into three experimental groups (yoga, TRX, and exercise-related combination programs) and control group. At this stage, the lordosis angle of participants was measured using a flexible ruler, and their pain was also measured via the Oswestry Disability Index. Furthermore, the experimental groups performed selected exercises for 60 min/session for three sessions/week for six weeks. Results : Our results demonstrated that there was a statistically significant difference between the yoga, TRX, and exercise-related combination programs in lumbar lordosis ( P = 0.003) and pain levels in women with LBP ( P = 0.007). Also, lumbar lordotic angle showed a significant reduction only in the combined groups subsequent to the period ( P = 0.003). Conclusion : In conclusion, the current findings illustrated that exercise-related combination program than other modalities could be used as an exercise-related treatment method to ameliorate lordosis angle and pain in women with LBP.