Eric A Lutz1, Rustin J Reed, Dylan Turner, Sally R Littau. 1. From the Mining Safety and Health Program, Environmental and Occupational Health, Division of Community, Environment, and Policy, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson.
Abstract
OBJECTIVE: In a hot underground metal mine, this study evaluated the relationship between job task, physical body type, work shift, and heat strain. METHODS: Thirty-one miners were evaluated during 98 shifts while performing deep shaft-sinking tasks. Continuous core body temperature, heart rate, pre- and postshift urine specific gravity (USG), and body mass index were measured. RESULTS: Cutting and welding tasks were associated with significantly (P < 0.05) increased core body temperature, maximum heart rate, and increased postshift urine specific gravity. Miners in the obese level II and III body mass index categories, as well as those working night shift, had lower core body temperatures (P < 0.05). CONCLUSIONS: This study confirms that job task, body type, and shift are risk factors for heat strain.
OBJECTIVE: In a hot underground metal mine, this study evaluated the relationship between job task, physical body type, work shift, and heat strain. METHODS: Thirty-one miners were evaluated during 98 shifts while performing deep shaft-sinking tasks. Continuous core body temperature, heart rate, pre- and postshift urine specific gravity (USG), and body mass index were measured. RESULTS: Cutting and welding tasks were associated with significantly (P < 0.05) increased core body temperature, maximum heart rate, and increased postshift urine specific gravity. Miners in the obese level II and III body mass index categories, as well as those working night shift, had lower core body temperatures (P < 0.05). CONCLUSIONS: This study confirms that job task, body type, and shift are risk factors for heat strain.
Authors: Christopher L Chapman; Hayden W Hess; Rebekah A I Lucas; Jason Glaser; Rajiv Saran; Jennifer Bragg-Gresham; David H Wegman; Erik Hansson; Christopher T Minson; Zachary J Schlader Journal: Am J Physiol Regul Integr Comp Physiol Date: 2021-06-23 Impact factor: 3.210
Authors: Jacob F Piil; Jesper Lundbye-Jensen; Lasse Christiansen; Leonidas Ioannou; Lydia Tsoutsoubi; Constantinos N Dallas; Konstantinos Mantzios; Andreas D Flouris; Lars Nybo Journal: PLoS One Date: 2018-10-24 Impact factor: 3.240