Ingemann-Hansen T, Halkjaer-Kristensen J
Scand J Rehabil Med. 1977;9(2):67-72.
Changes in thigh components were investigated with the one-legged inactivity- and training-model using 22 young healthy male soccer players, who for 4-5 weeks had one leg immobilized in a cast. They were investigated before and after the cast period and after 4 weeks' physical training of the inactivated leg. Immobilization induced a significant increase in the subcutaneous thickness and a significant decrease in the circumference of the thigh (p less than 0.01). The calculated lean thigh volume was reduced from 4.93 1 to 4.10 1 (p less than 0.01), whereas the calculated fat thigh volume (1.5 1) was unchanged. The changes reversed after four weeks of progressive dynamic training, but did not reach the pre-immobilized values. Body weight decreased from 73.4 kg to 70.8 kg (p less than 0.01) during the immobilization period and was regained after the training period. The fat fraction of the body was unchanged. It is concluded that the loss in total thigh volume during inactivation in a cast is due to waste of the muscle tissue, and further that this loss is partly concealed by an unchanged fat thigh volume.
采用单腿制动和训练模型，对22名年轻健康的男性足球运动员大腿各部分的变化进行了研究。这些运动员有一条腿被石膏固定4至5周。在打石膏前后以及对制动腿进行4周体育训练后对他们进行了调查。制动导致皮下厚度显著增加，大腿周长显著减小（p<0.01）。计算得出的大腿瘦体积从4.93升降至4.10升（p<0.01），而计算得出的大腿脂肪体积（1.5升）未变。经过四周的渐进性动态训练后，这些变化发生了逆转，但未恢复到制动前的值。在制动期间体重从73.4千克降至70.8千克（p<0.01），在训练期后体重恢复。身体的脂肪比例未变。研究得出结论，打石膏制动期间大腿总体积的减少是由于肌肉组织的损耗，而且进一步表明这种减少部分被不变的大腿脂肪体积所掩盖。
