Pinfold Scott C, Harnett Michael C, Cochrane Darryl J
a Manawatu Rugby , Palmerston North , New Zealand.
b Rehab Physio Centre , Palmerston North , New Zealand.
Res Sports Med. 2018 Oct-Dec;26(4):490-499. doi: 10.1080/15438627.2018.1492390. Epub 2018 Jun 30.
It has been purported that the mechanism for muscular improvement after a gluteal warm-up protocol is likely to occur from neural activation. However, little is known about whether changes in muscular performance are due to changes in muscle activity. Therefore, the aim of this study was to determine whether a lower-limb warm-up that targets the gluteal muscle group would improve countermovement jump and short-distance sprinting through increased muscle activity. Ten semi-professional rugby union players (age 25.4 ± 2.9 yr; height 1.83 ± 6.7 m; body mass 96.8 ± 10.6 kg) with at least three years of resistance training experience volunteered for the study. In a cross-over design, participants performed countermovement jumps and 5 m sprints before and after a gluteal warm-up and a 10 min rest (control). Electromyography was used to measure muscle activity of the gluteus maximus and biceps femoris. Countermovement jump height significantly improved (7.9%, p < 0.05) after the lower-limb warm-up protocol compared with the control (3.2%). There was a significant (p < 0.05) improvement in sprint times over 2.5 m and 5 m regardless of the condition. There was no significant change in the muscle activity in any of the conditions. The results indicate that a lower-limb warm-up can acutely enhance countermovement jump performance compared to a control.
据称，臀肌热身方案后肌肉改善的机制可能源于神经激活。然而，关于肌肉性能的变化是否归因于肌肉活动的变化，人们知之甚少。因此，本研究的目的是确定针对臀肌群的下肢热身是否会通过增加肌肉活动来提高反向运动跳跃和短距离冲刺能力。十名具有至少三年抗阻训练经验的半职业橄榄球联盟球员（年龄25.4±2.9岁；身高1.83±6.7米；体重96.8±10.6千克）自愿参加了该研究。在交叉设计中，参与者在臀肌热身和10分钟休息（对照）之前和之后进行反向运动跳跃和5米冲刺。使用肌电图来测量臀大肌和股二头肌的肌肉活动。与对照组（3.2%）相比，下肢热身方案后反向运动跳跃高度显著提高（7.9%，p<0.05）。无论哪种情况，2.5米和5米冲刺时间均有显著（p<0.05）改善。在任何情况下，肌肉活动均无显著变化。结果表明，与对照组相比，下肢热身可急性增强反向运动跳跃性能。
