عنوان مقاله [English]
نویسندگان [English]چکیده [English]
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