Abstract:
PURPOSE:To examine change in physical fitness and body composition after a military deployment to Afghanistan. METHODS:One hundred and ten infantry soldiers were measured before and after a 9-month deployment to Afghanistan for Operation Enduring Freedom. Measurements included treadmill peak oxygen uptake (peak VO2), lifting strength, medicine ball put, vertical jump, and body composition estimated via dual-energy x-ray absorptiometry (percent body fat, absolute body fat, fat-free mass, bone mineral content, and bone mineral density). RESULTS:There were significant decreases (P < 0.01) in peak VO2 (-4.5%), medicine ball put (-4.9%), body mass (-1.9%), and fat-free mass (-3.5%), whereas percent body fat increased from 17.7% to 19.6%. Lifting strength and vertical jump performance did not change predeployment to postdeployment. CONCLUSIONS:Nine months deployment to Afghanistan negatively affected aerobic capacity, upper body power, and body composition. The predeployment to postdeployment changes were not large and unlikely to present a major health or fitness concern. If deployments continue to be extended and time between deployments decreased, the effects may be magnified and further study warranted.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Sharp MA,Knapik JJ,Walker LA,Burrell L,Frykman PN,Darakjy SS,Lester ME,Marin REdoi
10.1249/MSS.0b013e318176b978subject
Has Abstractpub_date
2008-09-01 00:00:00pages
1687-92issue
9eissn
0195-9131issn
1530-0315journal_volume
40pub_type
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