血流限制低强度训练后停止训练对老年人肌肉大小和力量的影响。
Effects of detraining after blood flow-restricted low-intensity training on muscle size and strength in older adults.
作者信息
Yasuda Tomohiro, Fukumura Kazuya, Sato Yoshiaki, Yamasoba Tatsuya, Nakajima Toshiaki
机构信息
Department of Ischemic Circulatory Physiology, Graduate School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan,
出版信息
Aging Clin Exp Res. 2014 Oct;26(5):561-4. doi: 10.1007/s40520-014-0208-0. Epub 2014 Mar 19.
BACKGROUND
Although blood flow-restricted low-intensity resistance training (BFR-RT) increases muscle size and strength in older adults, the effect of detraining on muscle adaptation is unclear.
METHODS
We investigated the effects of 24 weeks of detraining on thigh muscle cross-sectional area (CSA) and one-repetition maximum strength (1-RM) in older adults who had previously participated in 12 weeks of training (BFR-RT, 20-30 % 1-RM, knee extension and leg press) or non-BFR training.
RESULTS
Both 1-RM and relative dynamic strengths (1-RM divided by quadriceps femoris (QF) muscle CSA) were higher at both post-training and detraining than at pre-training for the BFR-RT group (p < 0.05). QF muscle CSA was higher at only post-training than at pre-training for the BFR-RT group (p < 0.01).
CONCLUSION
Increased muscle strength following 12 weeks of training with BFR-RT was well preserved at 24 weeks of detraining, which is due mainly to neural adaptation in older adults.
背景
尽管血流限制低强度抗阻训练（BFR-RT）可增加老年人的肌肉量和力量，但停训对肌肉适应性的影响尚不清楚。
方法
我们调查了24周停训对先前参加过12周训练（BFR-RT，20%-30% 1-RM，伸膝和腿举）或非BFR训练的老年人股四头肌横截面积（CSA）和1次重复最大力量（1-RM）的影响。
结果
BFR-RT组在训练后和停训时的1-RM和相对动态力量（1-RM除以股四头肌（QF）肌肉CSA）均高于训练前（p<0.05）。BFR-RT组仅在训练后的QF肌肉CSA高于训练前（p<0.01）。
结论
BFR-RT训练12周后增加的肌肉力量在停训24周时得到了很好的保持，这主要归因于老年人的神经适应性。
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