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International Journal of Interdisciplinary Research

Fig. 2 | Fashion and Textiles

Fig. 2

From: Physiological and psychological neck load imposed by ballistic helmets during simulated military activities

Fig. 2

Effect of total helmet weight on the muscle strain of the four neck muscles during sitting, horizontal lifting, and prone shooting described as changes in %MVC (N = 8) (mean ± SD): The values were averaged for 5 min during each posture. NH = No Helmet; LH = 1.15 kg helmet; HH = 1.5 kg helmet, HH&NVD = 1.5 kg helmet with a night vision device (total weight = 2.1 kg). P < 0.05 indicates the helmet effects versus NH; Friedman test used for identifying the group differences with a Wilcoxon test as a post-hoc test

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