Effect of Prolonged Military Exercises With High Load Carriage, on Neuromuscular Fatigue and Physiological/Biomechanical Responses
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- Peripheral fatigue based on electrically-induced force measurement on the same muscle in relaxed condition.
研究概览
简要总结
Land military missions generally combine prolonged walking/moderate-pace-running and other physical actions such as creeping, jumping, shooting,... which are associated with the direct carrying of high to severe loads of equipment and supplies (20-30 to 50 kg) by soldiers. For an infantry section, "typical" intervention phases last about 20-24 h and combine variable intensity grades. Consequently, military mission characteristics are an interesting investigation field of human fatigue. Previous studies have investigated human neuromuscular alterations after prolonged "normal" locomotion exercises [Millet et al., 2004, 2009], thus the aim of this study is to characterize the neuromuscular determinants of fatigue induced by a 24-h Simulated Military Effort (SME) and a 4-h Military Road March (MM), both performed with high load carriage. Additionally, the consequences of fatigue on physiological and biomechanical parameters of locomotion will be investigated.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 30 Years 至 45 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •to be a male
- •to have a VO2max > 45ml/min/kg (mean observed value in military subjects)
- •to be aged from 30 to 45
- •to be recently retreated from National Army
- •to be highly experienced in military efforts
- •to be trained in exercises involving load carrying
- •to benefit from a social security insurance
排除标准
- •All subjects with recent (< 3 month) bone, articular or muscle diseases.
- •All subjects presenting a clinic sign of intolerance to testing procedures, especially subjects with knee, ankle, hip or back diseases.
- •All subjects intolerant to muddy or wooded environment.
- •All subjects presenting a clinic sign of intolerance to exercise, and particularly to running or walking while carrying a load
- •All subjects involved at the same time in another medical research
- •All subjects militarily active
- •All subjects with cardiac or pulmonary identified and known diseases
结局指标
主要结局
Peripheral fatigue based on electrically-induced force measurement on the same muscle in relaxed condition.
时间窗: after a a military exercise of 24 hours
Central fatigue quantification based on voluntary and electrically-induced force measurement on activated muscle.
时间窗: after a a military exercise of 24 hours
次要结局
- Lactatemia, based on subject's arterialized capillary blood samples analysis(after a a military exercise of 24 hours)
- Oxygen uptake, carbon-dioxide output, energetic-cost of locomotion and respiratory ratio, based on subject's gas exchanges.(after a a military exercise of 24 hours)
- Walking and running mechanics, measured by an instrumented treadmill(after a a military exercise of 24 hours)
- Perceived comfort, measured by a 10 cm visual analogic scale (VAS)(after a a military exercise of 24 hours)
- Muscular electrical activities, based on subject's surface EMG analysis(after a a military exercise of 24 hours)
- Rate of perceived exertion, measured by the Borg scale ranging from 6 to 20(after a a military exercise of 24 hours)
- Heart rate frequence(after a a military exercise of 24 hours)
- Postural equilibration, measured by a piezo-dynamometric double platform(after a a military exercise of 24 hours)