{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T10:42:09Z","timestamp":1777891329050,"version":"3.51.4"},"reference-count":38,"publisher":"SAGE Publications","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["WOR"],"published-print":{"date-parts":[[2024,4,9]]},"abstract":"<jats:p>BACKGROUND: Load carriage tasks during United States Marine Corps (USMC) recruit training can cause injury. Load carriage conditioning, if optimized, can reduce injury risk. OBJECTIVE: To compare injuries sustained by USMC recruits following participation in either the Original Load Carriage (OLC) program or a Modified Load Carriage (MLC) program. METHODS: Retrospective musculoskeletal injury data were drawn from the USMC San Diego Sports Medicine injury database for recruits completing the OLC (n\u200a=\u200a2,363) and MLC (n\u200a=\u200a681) programs. Data were expressed as descriptive statistics and a population estimate of the OLC:MLC relative risk ratio (RR) was calculated. RESULTS: The proportion of injuries sustained in the MLC cohort (n\u200a=\u200a268; 39% : OLC cohort, n\u200a=\u200a1,372\u200a:\u200a58%) was lower, as was the RR (0.68, 95% CI 0.61\u2013 0.75). The leading nature of injury for both cohorts was sprains and strains (OLC n\u200a=\u200a396, 29%; MLC n\u200a=\u200a66; 25%). Stress reactions were proportionally higher in MLC (n\u200a=\u200a17, 6%; OLC n\u200a=\u200a4, 0.3%), while stress fractures were proportionately lower (MLC n\u200a=\u200a9, 3%; OLC n\u200a=\u200a114, 8%). Overuse injuries were lower in MLC (\u2013 7%). The knee, lower leg, ankle, and foot were the top four bodily sites of injuries and the Small Unit Leadership Evaluation (SULE), Crucible, overuse-nonspecific, running, and conditioning hikes were within the top five most common events causing injury. The prevalence rates of moderate severity injury were similar (MLC\u200a=\u200a23%; OLC\u200a=\u200a24%), although MLC presented both a higher proportion and prevalence of severe injuries (MLC\u200a=\u200a6%; OLC\u200a=\u200a3%, respectively). CONCLUSION: A periodized load carriage program concurrently increased exposure to load carriage hikes while reducing injuries both during the load carriage hikes and overall.<\/jats:p>","DOI":"10.3233\/wor-230569","type":"journal-article","created":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T12:42:34Z","timestamp":1711716154000},"page":"1391-1399","source":"Crossref","is-referenced-by-count":0,"title":["Profiling injuries sustained following implementation of a progressive load carriage program in United States marine corps recruit training"],"prefix":"10.1177","volume":"77","author":[{"given":"Karen","family":"Kelly","sequence":"first","affiliation":[{"name":"Applied Translational Exercise and Metabolic Physiology Team, Warfighter Performance, San Diego, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brenda","family":"Niederberger","sequence":"additional","affiliation":[{"name":"Applied Translational Exercise and Metabolic Physiology Team, Warfighter 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