Ad libitum drinking prevents dehydration during physical work in the heat when adhering to occupational heat stress recommendations

Occupational Heat Stress Recommendation Compliance Attenuates AKI Risk Compared with a Work–Rest Ratio–Matched, Positive Control Scenario

“…The data presented here represent the primary outcome while a portion of these presented were previously published in a study that tested a unique hypothesis. 8 Twelve healthy adults (6 women; age: 28 years [range, 21-38]; body mass index: 24 kg/m 2 [range, 18-29]) participated in this study. All participants were free of any chronic disease, were not heatacclimated, regularly engaged in physical activity, and were nonsmokers.…”

“…7 The recommendations prescribe work-rest ratios on the basis of environmental factors (e.g., wet-bulb globe temperature [WBGT]) and metabolic heat production, and adherence largely ensures that core temperature is #38.0°C in unacclimatized adults. 8 However, it is unknown whether the recommendations protect against heat-induced elevations in AKI risk. We tested the hypothesis that AKI risk is attenuated when adhering to occupational heat stress recommendations.…”

Work–rest regimens for work in hot environments: A scoping review

“…53 The number of participants included in the experimental studies varied between 1 and 115 (median: 10), for a total of 642 participants (representing an average of 18 ± 25 participants per study). Only six studies 35,40,45,49,58,66 included females (total of 38, 6%) (Figure 3B). No studies focusing only on females were retrieved.…”

“…No studies focusing only on females were retrieved. The menstrual cycle was either controlled, 35,40,58,66 uncontrolled 45 or nothing was specified about it. 49 Nine studies (26%) included heat-acclimatized participants, 18 (51%) were conducted on nonheat-acclimatized individuals and eight (23%) did not mention the acclimatization status of the participants (Figure 3C).…”

“…Seven of the 35 experimental studies (20%) implemented a work-rest regimen based on ACGIH Threshold Limit Values, [26][27][28]39,59,60,62 none used the Action Limit Values, four (11%) used the NIOSH recommendations 35,41,45,58 and one (3%) used recommendations provided by the Australian Army 40 (Figure 4A). It is worth mentioning that seven of the studies that used Threshold Limit Values did so in participants who were not heat acclimatized 26,28,39,59 or of unknown acclimatization status.…”