Hydration Status and Ergonomic Risk in Frontline Workers
Study summary
Physically demanding occupations require high levels of energy expenditure, mental sharpness, and technical skills, and are often performed in extreme environments during hot/humid summer months. Previous research shows dehydration and heat stress can increase risk of heat-related illness, reduce cognitive function, and work capacity. The relationship between hydration status and occupational physical and environmental demands has yet to be fully understood and compared across occupations. This study will examine hydration, sweat profile, activity level and its association with ergonomic risk (high, moderate, and mild risk movement patterns performed during work) and fatigue to improve our understanding of the hydration needs of warehouse workers.
Eligibility
Sex
ALL
Min age
18 Years
Max age
65 Years
Healthy volunteers
Accepted
Inclusion Criteria:
* Participant self-identifies as a healthy male or female
* Participant is 18-65 years of age
* Participant has worked for their employer for at least 2 months
* Participant is willing to agree to the protocol outlined in the informed consent form
Exclusion Criteria:
* Participant has an allergy to adhesives
* Female participant is pregnant or nursing
Optional Core Temperature Pill Monitoring exclusion:
* You have a known or suspected obstructive disease of the gastrointestinal (GI) tract
* You have a disordered gag reflex
* You have had a previous GI surgery
* You have felinization of the esophagus
* You have hypomotility disorders of the GI tract
* You have a cardiac pacemaker or other implanted electromedical devices
* You might undergo MRI scanning during the period the ingested capsule was within the body
Primary outcome measure(s)
Fluid Balance — Day 1, over 8-12 hour shift Fluid Intake (mL) - sweat losses (mL)
Urine Color — Day 1, 15 minutes pre- 8-12 hour shift and 15 minutes post- 8-12 hour shift 1=most dilute to 7= least dilute, with higher scores associated with a dehydration and a poorer outcome.
Internal Workload — Day 1, over 8-12 hour shift Average Heart Rate (beats per minute)
Ergonomic Risk — Day 1, over 8-12 hour shift Assessed using the LifeBooster Senz devices. Device measures frequency and severity of movements and posture
Self-reported Changes in Fatigue — Day 1, 15 minutes pre- and 15 minutes post- 8-12 hour shift Mental and Physical Energy and Fatigue. Visual Analog Scale (VAS): 6 questions to describe capacity for physical activity anchored from No to Strongest Feelings and 6 questions describe capacity for mental activity anchored from No to Strongest Feelings.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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