Influences of exercise, obesity and aging on growth hormone secretion and clarification of mechanism

本研究探讨长期运动训练和饮食干预对生长激素分泌的影响。每个实验的结果都表明，2-4周的运动训练和几天的饮食干预（增加脂肪消耗）不会影响运动诱导的生长激素反应。然而，在缺氧条件下进行4周的运动训练时，运动诱导生长激素明显增加。这些发现表明，在一般情况下，运动诱导的生长激素反应相对较强。另一方面，研究结果表明，运动诱导的生长激素反应可能通过特定条件的运动干预来改善，例如在运动期间使用缺氧暴露。

The present study investigated that influences of long-term exercise training and diet intervention on growth hormone secretions. The results from each experiment indicated that 2-4 weeks of exercise training and several days of diet intervention (increase in fat consumption) did not affect exercise-induced growth hormone response. However, exercise-induced growth hormone was significantly enhanced when the 4 week of exercise training was conducted in hypoxia. These findings suggest that exercise-induced growth hormone response is relatively robust under general situation. On the other hand, the findings newly suggest possibility that exercise-induced growth hormone response might be improved by exercise intervention with specific condition, such as the use of exposure to hypoxia during exercise.