Yang Yong, Chen Shu-Chen, Chen Chiao-Nan, Hsu Chihw-Wen, Zhou Wen-Sheng, Chien Kuei-Yu
Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan,Taiwan.
Institute of Physical Education, Henan University, Kaifeng,China.
J Aging Phys Act. 2022 Jun 1;30(3):552-566. doi: 10.1123/japa.2020-0493. Epub 2021 Sep 11.
Muscle strength after detraining is still higher than the level before training, which is an important issue for middle-aged and older adults. The purpose of the present study was to examine the effects of detraining duration (DD), resistance training duration (RTD), and intensity on the maintenance of resistance training (RT) benefits after detraining in middle-aged and older adults. A systematic search yielded 15 randomized control trails (n = 383) eligible for inclusion. The results showed that RTD ≥ 24 weeks and DD ≥ RTD, the RT benefits were still significantly maintained even with medium and low intensity (standardized mean difference = 1.16, 95% confidence interval, CI [0.38, 1.94], p = .004). When RTD < 24 weeks and DD ≤ RTD, only the high-intensity groups maintained the RT benefits (DD, 4-6 weeks: standardized mean difference = 0.71, 95% CI [0.34, 1.08], p = .0002; DD 8-16 weeks: standardized mean difference = 1.35, 95% CI [0.66, 2.04], p = .0001). However, when DD > RTD, the RT benefits were not maintained even with high intensity. In summary, when RTD was less than 24 weeks, RTD > DD was an important factor in maintaining muscle strength.
停训后的肌肉力量仍高于训练前的水平，这对中老年人来说是一个重要问题。本研究的目的是探讨停训持续时间（DD）、抗阻训练持续时间（RTD）和强度对中老年人停训后抗阻训练（RT）益处维持情况的影响。系统检索得到15项符合纳入标准的随机对照试验（n = 383）。结果显示，当RTD≥24周且DD≥RTD时，即使是中低强度训练，RT的益处仍能显著维持（标准化均值差 = 1.16，95%置信区间，CI [0.38, 1.94]，p = .004）。当RTD<24周且DD≤RTD时，只有高强度组能维持RT的益处（DD为4 - 6周：标准化均值差 = 0.71，95% CI [0.34, 1.08]，p = .0002；DD为8 - 16周：标准化均值差 = 1.35，95% CI [0.66, 2.04]，p = .0001）。然而，当DD>RTD时，即使是高强度训练，RT的益处也无法维持。总之，当RTD小于24周时，RTD>DD是维持肌肉力量的一个重要因素。
