BACKGROUND: Associations between physical activity and injuries have been previously examined using self-reports. The present investigation examined this association using objective measures of activity and injury. METHODS: To quantify ambulatory activity, pedometers were worn daily by recruits in 10 Army Basic Combat Training companies during the 9-week training cycle. Injuries were obtained from a medical surveillance system, defined as traumatic or overuse events resulting in a medical care provider visit. A daily questionnaire documented whether or not recruits wore the pedometers and trained with their companies for the entire day. RESULTS: Training companies were categorized by activity level into 3 groups with higher activity (HA, 17,948±550 steps/day), 4 with moderate activity (MA, 16,346±768 steps/day) and 3 with lower activity (LA, 14,772±400 steps/day). Among men, the MA and HA groups were at 1.52 (95% confidence interval [95% CI]=1.15-2.01) and 1.94 (95% CI=1.46-2.61) times higher injury risk, respectively, compared with the LA group. Among women, the MA and HA groups were at 1.36 (95% CI=1.07-1.73) and 1.53 (95% CI=1.24-1.89) times higher injury risk, respectively, compared with low LA group. The relationships remained significant after considering physical characteristics and physical fitness. CONCLUSIONS: In consonance with previous self-report studies, higher physical activity was associated with higher injury risk.
BACKGROUND: Associations between physical activity and injuries have been previously examined using self-reports. The present investigation examined this association using objective measures of activity and injury. METHODS: To quantify ambulatory activity, pedometers were worn daily by recruits in 10 Army Basic Combat Training companies during the 9-week training cycle. Injuries were obtained from a medical surveillance system, defined as traumatic or overuse events resulting in a medical care provider visit. A daily questionnaire documented whether or not recruits wore the pedometers and trained with their companies for the entire day. RESULTS: Training companies were categorized by activity level into 3 groups with higher activity (HA, 17,948±550 steps/day), 4 with moderate activity (MA, 16,346±768 steps/day) and 3 with lower activity (LA, 14,772±400 steps/day). Among men, the MA and HA groups were at 1.52 (95% confidence interval [95% CI]=1.15-2.01) and 1.94 (95% CI=1.46-2.61) times higher injury risk, respectively, compared with the LA group. Among women, the MA and HA groups were at 1.36 (95% CI=1.07-1.73) and 1.53 (95% CI=1.24-1.89) times higher injury risk, respectively, compared with low LA group. The relationships remained significant after considering physical characteristics and physical fitness. CONCLUSIONS: In consonance with previous self-report studies, higher physical activity was associated with higher injury risk.
Authors: James R Morrow; Laura F Defina; David Leonard; Elaine Trudelle-Jackson; Michelle A Custodio Journal: Med Sci Sports Exerc Date: 2012-10 Impact factor: 5.411
Authors: Jagannath Sharma; Julie P Greeves; Mark Byers; Alexander N Bennett; Iain R Spears Journal: BMC Musculoskelet Disord Date: 2015-05-04 Impact factor: 2.362
Authors: Stefan Sammito; Vedran Hadzic; Thomas Karakolis; Karen R Kelly; Susan P Proctor; Ainars Stepens; Graham White; Wes O Zimmermann Journal: Mil Med Res Date: 2021-12-10
Authors: Joseph J Knapik; Bria Graham; Jacketta Cobbs; Diane Thompson; Ryan Steelman; Bruce H Jones Journal: J Occup Med Toxicol Date: 2013-03-05 Impact factor: 2.646
Authors: Joseph J Knapik; Bria Graham; Jacketta Cobbs; Diane Thompson; Ryan Steelman; Bruce H Jones Journal: BMC Musculoskelet Disord Date: 2013-01-17 Impact factor: 2.362