reference : Fitness, obesity and risk of heat illness among army trainees

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Bibliographic fields
reftype Journal Article
Abstract BackgroundExertional heat illness (EHI) affects military personnel, athletes and occupational groups such as agricultural workers, despite knowledge of preventive measures.AimsTo evaluate EHI diagnoses during US Army basic training and its associations with fitness and body fat on entering military service.MethodsFrom February 2005 to September 2006, US Army recruits at six different military entrance stations took a pre-accession fitness test, including a 5-min step test scored as pass or fail. Subsequent EHI incidence and incidence rate ratios were analysed with reference to subjects’ fitness (step test performance) and whether they met (weight qualified [WQ]) or exceeded body fat (EBF) standards.ResultsAmong the 8621 WQ and 834 EBF male subjects, there were 67 incidents of EHI within 180 days of entering military service. Among WQ subjects, step test failure was significantly associated with EHI (odds ratio [OR] 2.00, 95% confidence interval [CI] 1.13, 3.53). For those passing the step test, the risk of EHI was significantly higher in EBF than in WQ subjects (OR 3.98, 95% CI 2.17, 7.29). Expected ORs for the joint effects of step test failure and EBF classification under additive and multiplicative models were 4.98 and 7.96, respectively. There were too few women to evaluate their data in detail.ConclusionsThis study demonstrated that fitness and body fat are independently associated with incident EHI, and the effect of both was substantially higher. Those with low fitness levels and/or obesity should be evaluated further before engaging in intense physical activity, especially in warmer months.
Author Bedno, S. A.; Urban, N.; Boivin, M. R.; Cowan, D. N.
DOI 10.1093/occmed/kqu062
ISSN 0962-7480
Issue 6
Journal Occupational Medicine
Notes 10.1093/occmed/kqu062
Pages 461-467
Title Fitness, obesity and risk of heat illness among army trainees
Volume 64
Year 2014
Bibliographic identifiers
_record_number 23723
_uuid 852e2333-496f-4c49-afed-3d3c57d33308