THE EFFECT OF LOSS OF VISUAL INPUT ON MUSCLE POWER IN RESISTANCE TRAINED AND UNTRAINED YOUNG MEN AND WOMEN
THE EFFECT OF LOSS OF VISUAL INPUT ON MUSCLE POWER IN RESISTANCE TRAINED AND UNTRAINED YOUNG MEN AND WOMEN
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DOI：
10.1519/jsc.0b013e3182577091
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发表时间：
2013-02-01
影响因子：
3.2
通讯作者：
Hensarling, Robert W.
中科院分区：
文献类型：
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作者：
Killebrew, Shanna S.;Petrella, John K.;Hensarling, Robert W.
Killebrew，SS，Petrella，JK，Jung，AP和Hensarling，RW。视觉输入的损失对阻力训练和未训练的年轻男女肌肉力量的影响。J Strength Cond Res 27（2）：495-500，2013-与视力正常的人相比，视力障碍会降低肌肉力量。本研究的目的是评估视觉输入的丧失是否会影响有视力的男性和女性在接受阻力训练和未接受训练时的下肢肌肉力量产生。27名大学年龄的参与者（19-23岁）在2个独立的平衡试验中进行了有和没有视觉输入（由于被蒙住眼睛）的坐姿双腿推举。下肢同心功率计算通过测量的距离和时间的腿压踏板位移，同时举起60%的1-重复最大尽可能快。所有参与者的视觉输入损失使功率输出减少22.8 W（-6.4%）（p < 0.01）。当考虑到阻力训练状态时，阻力训练的参与者（n = 12，每周训练>2X）没有失去功率输出（4.4 W，-1.1%，p = 0.90），而未经训练的男性和女性（n = 15）在通过蒙眼去除视觉输入时功率显著降低（37.6 W，-11.7%，p < 0.01）。未经训练的女性在蒙眼时功率下降最大（39 W，-15.9%，p < 0.01）。肌肉力量在没有视力的情况下会下降，但定期的力量训练计划会减弱年轻男性和女性的这种情况。在实际应用中，力量训练干预可能会成功地保护个体在视觉输入被移除时免受肌肉力量损失。
Killebrew, SS, Petrella, JK, Jung, AP, and Hensarling, RW. The effect of loss of visual input on muscle power in resistance trained and untrained young men and women. J Strength Cond Res 27(2): 495-500, 2013-Visual impairment has been shown to reduce muscle power when compared with that in sighted individuals. The purpose of this study was to assess whether the loss of visual input affects lower limb muscle power production in sighted men and women who are resistance trained and untrained. Twenty-seven college-aged participants (19-23 years) performed a seated double-leg press with and without visual input (resulting from being blindfold) in 2 separate counterbalanced trials. Lower limb concentric power was calculated by measuring the distance and time a leg press footplate was displaced while lifting 60% of 1-repetition maximum as quickly as possible. Loss of visual input reduced power output by 22.8 W (-6.4%) in all participants (p < 0.01). When resistance training status was taken into account, resistance trained participants (n = 12, trained >2X per week) did not lose power output (4.4 W, -1.1%, p = 0.90), whereas untrained men and women (n = 15) had significantly less power when visual input was removed via blindfold (37.6 W, -11.7%, p < 0.01). Untrained women experienced the greatest decrease in power when blindfolded (39 W, -15.9%, p < 0.01). Muscle power decreases in the absence of vision, but a regular strength training program attenuates this occurrence in young men and women. In practical application, strength training interventions may be successful in protecting individuals from losses in muscle power when visual input is removed.