关键速度和瘦体质量对陆军预备役军官训练队学员载荷性能的影响
Nathan D Dicks1, Sean J Mahoney1, Allison M Barry2
1North Dakota State University, Fargo, ND 58108, USA.
Military medicine
|January 11, 2025
概括
临界速度 (CS) 和瘦体质量 (LBM) 最好预测更长的载荷承载时间试验 (LCTT),而大腿瘦体质量 (TLM) 预测更短的LCTT. 这些因素对于成功运载载荷的性能至关重要.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 人类表现的人类表现.
背景情况:
- 载荷是战术行动不可或缺的一部分,影响性能.
- 临界速度 (CS) 和最大排量 (D') 是从3分钟全力测试中得出的关键指标.
- 了解影响载荷运输性能的因素对于军事和职业准备至关重要.
研究的目的:
- 调查CS,D',瘦身量 (LBM),大腿瘦身量 (TLM) 和下肢力量/耐力在载荷时间试验 (LCTT) 性能的预测能力.
- 确定与成功完成负载运行任务相关的关键生理和身体组成变量.
- 建立特定的物理属性和在不同距离LCTT的性能之间的关系.
主要方法:
- 22名预备役军官训练队学员完成了为期3分钟的CS和D'估计的全力测试.
- 使用双能X射线吸收计评估身体组成 (包括LBM和TLM).
- 测量了异性膝盖伸展强度和耐力,以及400米和3200米LCTT的表现,负载为21公斤.
主要成果:
- 在LBM,TLM和下肢力量/耐力与CS之间发现了显著的相关性.
- 临界速度 (CS) 和瘦体质量 (LBM) 是3200米LCTT性能 (R2=0.90) 的显著预测因素.
- 瘦质量 (TLM) 成为400米LCTT (R2=0.70) 的首要预测因素.
结论:
- CS和LBM是预测在更长 (3,200m) 的载荷运输任务中的性能最重要的因素.
- 在较短 (400米) 的载荷运输时间试验中,TLM是成功的关键决定因素.
- 这些发现强调了车身构成和关键速度在优化载荷能力方面的重要性.
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