Effects of eccentric-only resistance training and detraining
Effects of eccentric-only resistance training and detraining
复制标题
DOI：
10.1055/s-2007-972823
复制
发表时间：
1996-02-01
影响因子：
2.5
通讯作者：
Weir, LL
中科院分区：
文献类型：
--
作者：
Housh, TJ;Housh, DJ;Weir, LL
本研究的目的是检查腿部伸肌单侧偏心动态恒定外阻力（DCER）训练对以下方面的影响：（a）训练和未训练肢体中的偏心DCER强度，（B）训练和未训练肢体中的同心等速腿伸展峰值扭矩-速度曲线，和（c）在停止训练后，在训练和未训练的肢体中保持离心DCER强度和同心等速峰值扭矩。17名成年男性（X年龄+/- SD = 24 +/- 3岁）志愿者组成训练组（TR，n = 9）和对照组（CTL，n = 8）。TR组训练非优势肢体的腿部伸肌，仅进行偏心DCER运动（3-5组，每6次重复，偏心一次重复最大负荷的80%[1-RM]），持续8周，然后再停止训练8周。CTL组未进行训练。所有受试者在训练前、训练后和停训后进行测试，测试腿部伸肌的1-RM单侧偏心DCER强度以及1.05、2.09、3.14、4.19和5.24 rad的同心等速腿部伸展峰值扭矩。s（-1）在两个肢体中。混合因子方差分析，随访和事后分析表明，训练导致增加偏心DCER的力量在两个培训（29%）和未经培训（17%）的肢体，但没有变化的等速峰值扭矩在任何一个肢体的收缩速度。此外，训练引起的增加偏心DCER强度的两个肢体保留在8周的停训。
The purposes of this investigation were to examine the efects of unilateral eccentric-only dynamic constant external resistance (DCER) training of the leg extensor muscles on: (a) eccentric DCER strength in the trained and untrained limbs, (b) concentric isokinetic leg extension peak torque-velocity curves in the trained and untrained limbs, and (c) retention of eccentric DCER strength and concentric isokinetic peak torque in the trained and untrained limbs following detraining. Seventeen adult male (X age +/- SD = 24 +/- 3 yr) volunteers comprised training (TR, n = 9) and control (CTL, n = 8) groups. The TR group trained the leg extensor muscles of the nondominant limb with eccentric-only DCER exercise (3-5 sets of 6 repetitions at 80% of the eccentric one-repetition maximum [1-RM] load) for eight weeks followed by eight additional weeks of detraining. The CTL group did not train. All subjects were tested pretraining, posttraining, and after detraining for 1-RM unilateral eccentric DCER strength of the leg extensor muscles as well as concentric isokinetic leg extension peak torque at 1.05, 2.09, 3.14, 4.19, and 5.24 rad . s(-1) in both limbs. Mixed factorial ANOVAs, follow-ups, and post-hoc analyses indicated that the training resulted in increased eccentric DCER strength in both the trained (29%) and untrained (17%) limbs, but no change in isokinetic peak torque at any of the velocities of contraction in either limb. Furthermore, the training-induced increases in eccentric DCER strength for both limbs were retained across eight weeks of detraining.