Exercise Physiology
Omid Reza Salehi; Dariush Sheikholeslami-Vatani; Sayed Ali Hosseini
Abstract
Introduction: Aging is associated with neurodegenerative and psychological disorders. Considering the ambiguity in the interactive effect of exercise and antioxidants, the aim of this study was to investigate the psycho-physiological effects of high intensity interval training (HIIT) and vitamin E (VE) ...
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Introduction: Aging is associated with neurodegenerative and psychological disorders. Considering the ambiguity in the interactive effect of exercise and antioxidants, the aim of this study was to investigate the psycho-physiological effects of high intensity interval training (HIIT) and vitamin E (VE) in elderly trimethyltin (TMT)-treated Alzheimer's rats.Methods: In this experimental study, 50 Alzheimer's rats (age 18-22 months; weight 280-320 grams) induced by 10 mg/kg TMT were divided into five groups, including: (1) TMT, (2) sham/ vitamin E solvent, (3) VE, (4) HIIT (90-95% of the maximum speed) and (5) HIIT+VE. Ten healthy rats were included in the healthy control (HC) group to investigate the effect of TMT on research variables. HIIT was performed for eight weeks, three sessions per week, and VE was given orally to the rats at a dose of 30 mg/kg. Results: In the HIIT and HIIT+VE groups, anthropometric indicators, food intake, anxiety and depression were significantly lower, and aerobic capacity, movement balance, and pain tolerance threshold were higher than the TMT group (P≥0.05). In the VE group, visceral fat weight, food intake, anxiety and depression were significantly lower than the TMT group (P≥0.05). Aerobic capacity was significantly higher in HIIT and HIIT+VE groups, and anxiety and depression were significantly lower than in the VE group (P≥0.05).Conclusion: It seems that HIIT, VE and HIIT + VE improve the weight, BMI and FW and physical and psychological performance, but the effects of HIIT on physical and psychological performance are much stronger than the effect of VE.
Payman Salimi; Dariyosh Sheikholeslami Vatani
Volume 2, Issue 2 , July 2012, , Pages 165-176
Abstract
Abstract
Aim: The aim of present study was to examine the influence of acute resistance exercise orders on response serum leptin and testosterone in overweight young men.
Method: Fourteen young men (mean age: 21.36±1.25 years and BMI: 27.95±1.88 kg/m2) were selected randomly and completed two sessions ...
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Abstract
Aim: The aim of present study was to examine the influence of acute resistance exercise orders on response serum leptin and testosterone in overweight young men.
Method: Fourteen young men (mean age: 21.36±1.25 years and BMI: 27.95±1.88 kg/m2) were selected randomly and completed two sessions of resistance exercise.The Exercise protocol consisted of two different protocols ]protocol A: from large to small muscles (Leg press, bench press, Lat Pull-down, overhead press, biceps curl, triceps extension (and Protocol B: from small to large muscles (Reverse Sequence of protocol B [(and with %85 of one repetition maximum (1RM) were done. For this purpose in first session randomly, half of the subjects performed protocol A and the other subjects completed the protocol B. One and two minutes rest intervals were set between sets and exercises movement, respectively. One week after, in the second session, subject’s protocols were contrary. Blood samples were collected before the exercise, immediately and 30 minutes after each exercise protocol. Hormone measurements were performed using radio immune-assay (RIA).
Results: By using ANOVA with repeated measure (within and between subject effects) the results indicated that serum leptin concentrations in both protocols, was decreased significantly immediately and 30 minutes after exercise (P≤0.05). So, the testosterone concentration decreased significantly immediately (protocol B) and 30 minutes after exercise (in both protocol) (P≤0.05). While, there was no differences between sessions for leptin and testosterone. Moreover, there was correlation between leptin and testosterone in order B and not in order A (P≤0.05).
Conclusion: Overall findings showed that the large or small muscles order used at the beginning of the exercise do not affect on the secretion hormone leptin and testosterone. Although, more research is needed to prove the link between these two hormones.
Key words: Exercise order, Leptin, Testosterone, Acute resistance exercise
