Matthew M Scarpaci1, Caitlin C Haven, Alexis L Maule, Kristin J Heaton, Kathryn M Taylor, Jennifer Rood, Maria Ospina, Antonia M Calafat, Susan P Proctor. 1. United States Army Research Institute of Environmental Medicine, Military Performance Division, Natick (Mr Scarpaci, Ms Haven, Dr Maule, Dr Heaton, Dr Taylor, Dr Proctor); Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda (Mr Scarpaci, Dr Maule); Hassenfeld Child Health Innovation Institute, Brown University, Rhode Island (current affiliation) (Mr Scarpaci); Defense Health Agency - U.S. Army Satellite, Aberdeen Proving Ground, Maryland (current affiliation) (Dr Maule); Louisiana State University's Pennington Biomedical Research Center, Baton Rouge, Louisiana (Dr Rood); Division of Laboratory Sciences, Centers for Disease Control and Prevention, National Center for Environmental Health, Atlanta, Georgia (Dr Ospina, Dr Calafat); VA Boston Healthcare System, Research Service, Boston (Dr Proctor), Massachusetts.
Abstract
OBJECTIVE: To examine relationships between percent body fat (%BF) and total energy expenditure (TEE) on permethrin exposure among Army National Guard (ARNG) Soldiers wearing permethrin-treated uniforms. METHODS: ARNG members (n = 47) participated in a 9-day study. Repeated body composition (height, weight, %BF) measurements and daily urine samples, analyzed for permethrin and N,N-diethyl-meta-toluamide (DEET) metabolites, were collected. TEE was determined via doubly labeled water protocol. Linear mixed and regression models were used for analyses. RESULTS: Neither %BF nor TEE were significantly associated with permethrin or DEET biomarkers. However, a significant interaction effect (F = 10.76; P = 0.0027) between laundering history and %BF was observed; 10% higher %BF was significantly associated with 25% higher permethrin biomarker concentrations among those wearing uniforms washed less than or equal to 25 (compared with more than 25) times. CONCLUSIONS: Uniform laundering history significantly affects the association between %BF and permethrin-treated uniform exposure.
OBJECTIVE: To examine relationships between percent body fat (%BF) and total energy expenditure (TEE) on permethrin exposure among Army National Guard (ARNG) Soldiers wearing permethrin-treated uniforms. METHODS: ARNG members (n = 47) participated in a 9-day study. Repeated body composition (height, weight, %BF) measurements and daily urine samples, analyzed for permethrin and N,N-diethyl-meta-toluamide (DEET) metabolites, were collected. TEE was determined via doubly labeled water protocol. Linear mixed and regression models were used for analyses. RESULTS: Neither %BF nor TEE were significantly associated with permethrin or DEET biomarkers. However, a significant interaction effect (F = 10.76; P = 0.0027) between laundering history and %BF was observed; 10% higher %BF was significantly associated with 25% higher permethrin biomarker concentrations among those wearing uniforms washed less than or equal to 25 (compared with more than 25) times. CONCLUSIONS: Uniform laundering history significantly affects the association between %BF and permethrin-treated uniform exposure.
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Authors: Alexis L Maule; Kristin J Heaton; Bruce Cadarette; Kathryn M Taylor; Katelyn I Guerriere; Caitlin C Haven; Matthew M Scarpaci; Robert W Kenefick; Maria Ospina; Antonia M Calafat; Susan P Proctor Journal: Am J Trop Med Hyg Date: 2020-06 Impact factor: 2.345
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