Objectives: Psychomotor performance is a vital factor which decisively affects the athletic performance. The purpose of the research was to investigate the acute effects of low intensity aerobic exercise on psychomotor performance of athletes with nocturnal sleep deprivation. Methods: Sixteen professional female volleyball players with mean age of 22.3 ± 2.6 years old were studied twice in a balanced, randomized design. The participants were asked to fill the Pittsburgh sleep quality index (PSQI) prior to the beginning of the study and their nocturnal activity was recorded at 1-minute intervals and scored with the Actiwatch sleep analysis. The study used the Vienna Test System to measure cognitive functions. The exercise protocol consisted one-session light aerobic exercises based on Rockport one-mile walking/running test controlled by Polar Electro. Results: The results suggested that all psychomotor tests were significantly impaired by nocturnal sleep deprivation (P ≤ .05). Moreover, it was shown that the experimental group didn't have any deteriorating change in the mentioned tests after light aerobic exercises (P ≥ .05). Conclusions: Although nocturnal Sleep deprivation could result in psychomotor malperformance in professional athletes, the light aerobic exercise would alleviate the deleterious effect of sleep deprivation in decisive task among athletes.
Considering the effective factors in any organization is of utmost importance which must be considered by managers. Thus, the aim of this study was to investigate the relationship between perceived organizational support with organizational commitment and job satisfaction of university faculty. Methods: 123 faculty members of sport sciences disciplines in public sector universities were recruited in the research by purposeful sampling method. In order to data collection, the Perceived Organizational Support Questionnaire (POSQ), Minnesota Job Satisfaction Questionnaire (MJSQ) and Organizational Commitment Questionnaire (OCQ) were used. The data were analyzed by using multiple regressions. Results: The results suggested that perceived organizational support is significantly associated with job satisfaction and organizational commitment (p=0.001). Furthermore, there was a significant positive correlation between organizational commitment and job satisfaction (p=0.001). Conclusion: All in all, perceived organizational support plays an important role in determining job satisfaction and organizational commitment of faculty members of sport sciences of Iran universities (p<0.05).
Inactive lifestyle and its degrading consequences such as increased body fat mass, muscle atrophy and physical functioning problems are among factors affecting the motorcontrol in adulthood. Therefore, the aim of study was to investigate the effect of Pilates exercise on motor control indexes of inactive middle-aged women.Method: This was a semi experimental study with pretest and post test design performed on 43 inactive females with mean age of 44.4±5.1 yearswith low activity, body percent fat above 35%, WHR> 0.95. They were assigned into two experimental (n=22) and control (n=21) groups. The pilates group did their exercise for 4 months, three weeks a week while the control group did their daily routines. Allbody composition variables were measured by body composition analyzer and functional tests were measured by speed and balance tests. Independent and dependent t-test was used to analyze the data. Results: The results suggested that dynamic balance and walking speed were improved significantly and those effective factors on motor control such as obesity variables,including body mass index (BMI), waist hip ratio (WHR), percent body fat (PBF), visceral fat (VF) (respectively, p=0.003; p=0.001; p=0.004) were also improved. Walking speed and balance were the other parameters affecting the motor control of aged women (respectively, p=0.001; p=003). Conclusion: It seems that pillates exercise may improve walking speed, balance and also lead to a better bodycomposition. Therefore, having such an exercise program can be effective in motor controland its major consequences for gait and postural control of elderly people.
Objectives This research aimed to investigate the impact of Pilates exercise on motor performance indexes and low back pain of inactive middle-aged women. Methods & Materials This was a quasi-experimental study with pretest and posttest design performed on 43 inactive females with mean (SD) age of 44.4 (5.1) year with low activity, body fat percentage above 35%, and Waist Hip Ratio (WHR) of over 0.95. They were assigned into test (n=22) and control (n=21) group. The Pilates or test group did their exercise for 4 months, three times a week while the control group did their daily routines. All body composition variables were measured by body composition analyzer and functional tests were measured by speed and balance tests. Independent and dependent t test were used to analyze the data. Results The results suggested that dynamic balance and speed improved significantly and those effective factors on motor control such as obesity variables, including Body Mass Index (BMI), WHR, body fat percentage, visceral fat were also improved (P≤0.05). Conclusion It seems that Pilates exercise may improve motor performance indexes and also a better quality of life due to a mitigating low back pain. Therefore, practicing such an exercise program can be effective in older persons.Extended Abstract S this regard, low back pain is more common in people with inactive lifestyle [2], increased body mass index, especially in the abdominal region, and muscle weakness in central areas. With the increase in abdominal obesity, the compensatory curve is created in the lumbar curvature which increases pressure on the intervertebral discs [2]. Due to the increase in the curves of the lumbar region, the center of gravity moves forward and causes changes in how to walk, disturbance in postural control and increased risk of falling, and finally reduction in motor function [3], including a reduction Citation: Seghatoleslami A, Hemmati Afif A, Irandoust Kh, Taheri M. [Effect of Pilates Exercises on Motor Performance and Low Back Pain in Elderly Women With Abdominal Obesity (Persian)]. Iranian Journal of Ageing. 2018; 13(3):396-405. https://doi.
Sleep loss and low tolerance to fatigue are among reasons that decline the athletic performance. Thus, the aim of the study was to investigate the effect of beetroot juice on physiological fatigue (time to exhaustion and blood lactate levels) and quality of sleep among male athletes. 30 male athletes with mean age of 20.7±3.7 years participated in the study voluntarily and divided randomly into three groups of supplement; placebo and control. Subjects in groups of supplement and placebo received 100 cc beetroot juice and placebo for a week, 2 hours prior to competition. 24-h recall questionnaire was used to monitor the nutrition status of subjects. Blood lactate levels and time to exhaustion were measured before and after one session of high-intensive exercise. The Pittsburgh Sleep Quality Index was given to the subjects for filling up before and after intervention. ANOVA and dependent t-tests were used to analyze the data. The results suggested that supplement group had a significant improvement in quality of sleep compared to placebo and control groups (p=0.001) while no significant difference was found between in placebo and control groups (p=0.97). In addition, both physiological fatigue indices including time to exhaustion and blood lactate levels were significantly improved after study intervention in supplement group (p≤0.05). Athletes are highly recommended to take beetroots supplement for the aim of postponing lactate acid accumulation. On the other hand, hence, it can be considered as a noninvasive and effective strategy to counteract sleep loss induced fatigue.
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