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在女孩和妇女中优化激活后增强潜能

Andrew McKiel^1,2, Stacey Woods^1,2, McKenna Faragher¹

¹Department of Kinesiology, Brock University, St. Catharines, ON, L2S 3A1, Canada.

European journal of applied physiology

|April 23, 2024

概括

与女孩相比,女性在5-10秒的条件化收缩 (CC) 后,在膝盖延伸器中经历了更大的后激活强化 (PAP). 对女性来说,最佳的CC持续时间为5-10秒,而持续时间对女孩的PAP没有影响.

科学领域:

运动生理学运动生理学
人类骨肌肉生理学人类骨肌肉生理学
运动科学运动科学运动科学

背景情况:

最大调节收缩 (CCs) 增强了人类骨肌肉中唤起的抽特征,这种现象被称为后激活强化 (PAP).
在成年膝盖延伸器中,PAP在男性中比男孩中更大,最佳的CC持续时间约为10秒.
之前的研究还没有广泛探讨女性中PAP与年龄相关的差异,也没有确定女孩和妇女的最佳CC持续时间.

研究的目的:

调查女孩和妇女之间膝盖延伸器中激活后增强 (PAP) 的性别差异.
为了确定在年轻女性和成年女性中引起PAP的最大条件收缩 (CCs) 的最佳持续时间.

主要方法:

11名女孩 (平均年龄9.3岁) 和13名女性 (平均年龄23.4岁) 参加了这项研究.
在随机顺序下,在膝盖延伸器中测量了最大的同位素唤起的抽,在四次最大的不同持续时间的CC之前和之后 (5,10,20和30秒).
激活后增强 (PAP) 被量化为每个CC之后的峰值扭矩 (Tpeak) 和峰值扭矩发展率 (RTDpeak) 的百分比变化.

主要成果:

对于Tpeak和RTDpeak,观察到组和CC持续时间之间的显著相互作用 (p < 0.001).
与女孩相比,女性在5秒和10秒的CC后表现出更大的Tpeak PAP.
5秒和10秒的CC持续时间导致女性的Tpeak和RTDpeak PAP最高,而CC持续时间对女孩的PAP水平没有显著影响.

结论:

妇女在膝盖延伸器中表现出增强后激活潜能 (PAP),与5秒和10秒的条件收缩 (CC) 后的女孩相比.
在女性的膝盖延伸器中引起PAP的最佳CC持续时间约为5-10秒.
从5到30秒的条件收缩持续时间似乎没有影响女孩的PAP水平.

关键词:

孩子孩子孩子孩子在激活后的激活增强.性差异性差异性差异性差异性差异性差异性差异性骨架肌肉是一个骨肌肉.

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