Effects of Deployment on Musculoskeletal and Physiological Characteristics and Balance.

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2016-09

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Abstract

Despite many nonbattle injuries reported during deployment, few studies have been conducted to evaluate the effects of deployment on musculoskeletal and physiological characteristics and balance. A total of 35 active duty U.S. Army Soldiers participated in laboratory testing before and after deployment to Afghanistan. The following measures were obtained for each Soldier: shoulder, trunk, hip, knee, and ankle strength and range of motion (ROM), balance, body composition, aerobic capacity, and anaerobic power/capacity. Additionally, Soldiers were asked about their physical activity and load carriage. Paired t tests or Wilcoxon tests with an α = 0.05 set a priori were used for statistical analyses. Shoulder external rotation ROM, torso rotation ROM, ankle dorsiflexion ROM, torso rotation strength, and anaerobic power significantly increased following deployment (p < 0.05). Shoulder extension ROM, shoulder external rotation strength, and eyes-closed balance (p < 0.05) were significantly worse following deployment. The majority of Soldiers (85%) engaged in physical activity. In addition, 58% of Soldiers reported regularly carrying a load (22 kg average). The deployment-related changes in musculoskeletal and physiological characteristics and balance as well as physical activity and load carriage during deployment may assist with proper preparation with the intent to optimize tactical readiness and mitigate injury risk.

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10.7205/MILMED-D-15-00370

Publication Info

Nagai, Takashi, John P Abt, Timothy C Sell, Karen A Keenan, Mark A McGrail, Brian W Smalley and Scott M Lephart (2016). Effects of Deployment on Musculoskeletal and Physiological Characteristics and Balance. Mil Med, 181(9). pp. 1050–1057. 10.7205/MILMED-D-15-00370 Retrieved from https://hdl.handle.net/10161/13100.

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