Effects of carried weight on random motion and traditional measures of postural sway

“…Falling may result in inefficient performance, in injury, and time lost from duty (Army Medical Surveillance Activity, 2001; Senier et al, 2002). Studies of balance while standing suggest that carrying a load affects the body's equilibrium and stability limits (Holbein and Redfern, 1997;Schiffman et al, 2006). Improving balance during load carriage may be one area that can be targeted to improve Soldier performance.…”

Section: Introductionmentioning

confidence: 99%

The effects of a lower body exoskeleton load carriage assistive device on limits of stability and postural sway

et al. 2008

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The purpose of the study was to investigate the effects of using a lower body prototype exoskeleton (EXO) on Soldiers' static limits of stability and postural sway. Ten Army enlisted men participated in the study. Limits of stability and postural sway were measured while participants stood on a force platform. Soldiers were tested with and without the EXO (15 kg) while carrying three load configurations: fighting load (20 kg), approach march load (40 kg), and emergency approach march load (55 kg). Body lean to the left and right was significantly less and postural sway excursions and maximal range of movement were significantly reduced when the EXO was used. Hurst values indicated that body sway was less random over short-term time intervals and more random over long-term time intervals with the EXO than without it. The use of an EXO prototype changes both the individual's limits of stability and postural sway.

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“…Also, in similar training conditions, tests conducted by posturograph demonstrated a worsening of static equilibrium [7]. The influence of the weight of military equipment and fatigue on postural stability were examined many times [12][13][14]. It was found that the weight of the military equipment and fatigue caused deterioration in balance, which correlated with the number of resulting injuries of the lower limbs.…”

Section: Introductionmentioning

confidence: 99%

Effect of 3-year education in the Main Fire Service School on the fitness level of students

Tomczak

Bertrandt

Kłos

et al. 2017

Ann Agric Environ Med.

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Introduction. The preparation of Polish Air Force cadets for survival in isolation is a necessary element of their training, to demonstrate just how difficult can be the conditions they could encounter in a combat situation. Objective. The aim of the research was to assess the effect of long-term survival training on selected coordination motor skills in Air Force cadets. Materials and method. Fifteen air force cadets aged 19.6±0.3 years exercised for 36 hours during survival training without the possibility to sleep. They were examined 4 times: Day 1 -before effort (training), Day 2 -after 24 hours training, Day 3 -directly after 36 hours training, Day 4 -next day, after an all night rest. They were examined for shooting and reaction time, the ability to maintain body balance, running motor adjustment, handgrip force differentiation, and on Days 1 and 3, exercise capacity was evaluated with a 1 mile walking test. Results. The survival training resulted in significant decreases in maximum handgrip strength, corrected 50% max handgrip, maintenance of body balance and heart rate. No changes occurred in reaction time, running motor adjustment and shooting performance. Overnight rest did not result in recovery of any of the examined factors to the values observed on Day 1. Conclusion. Survival training combined with sleep deprivation mostly affected peripheral factors depending on strong action from both muscles and nervous system, whereas complex tasks involving short-term central alertness and moderate exertion were maintained. In order to improve performance, more endurance strength training, if possible combined with sleep deprivation, should be introduced in military training.

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Effects of carried weight on random motion and traditional measures of postural sway

Cited by 74 publications

References 14 publications

The effect of load distribution within military load carriage systems on the kinetics of human gait

The effect of load distribution within military load carriage systems on the kinetics of human gait

The effects of a lower body exoskeleton load carriage assistive device on limits of stability and postural sway

Effect of 3-year education in the Main Fire Service School on the fitness level of students

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