Work Design Interventions for Heat Resilience
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Standard work pace, Reduced-pace work, Increased-pace work, Additional rest breaks.
- Who it may be relevant to
- Registry conditions: Hyperthermia, Fatigue; Heat, Work-Related Condition. Basic parameters: 18 years — 65 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
The goal of this project is to compare different ways to schedule a workday to see if older workers should follow a specific work protocol to reduce strain on the heart and muscles. Participants will come to the lab a total of six times. During four of the visits participants will complete a box carrying task, simulating unloading a delivery truck. This will take place in a hot and humid room to simulate being outdoors during the summer.
Interventions
- Behavioral Standard work pace
Participants will work at a standard pace of one box per minute during the box carrying protocol - Behavioral Reduced-pace work
Participants will work at a slower pace than the standard work pace of the box carrying protocol - Behavioral Increased-pace work
Participants will work at a faster pace than the standard work pace of the box carrying protocol - Behavioral Additional rest breaks
Participants will work at the standard work pace during the box carrying protocol and have superimposed 5 minutes of rest every 30 minutes.
Primary outcome measures
- Cardiac Troponin [Time frame: 2 hours following work protocol, approximately 6 hours into the trial]
- Maximum Core Temperature [Time frame: End of work protocol, approximately 4 hours into the trial]
Eligibility criteria
Inclusion criteria
- Healthy individuals
- 18-29 years old and 40-65 years old
- Completes at least 120 minutes of moderate to vigorous physical activity each week for at least the past 4 weeks
- Resistance trained or have recently held a job involving box carrying or a similar task
Exclusion criteria
- History of cardiovascular, metabolic, respiratory, neural, or renal disease
- Hypertensive (systolic blood pressure > 139 mmHg or diastolic blood pressure > 89 mmHg) or tachycardic (resting heart rate > 100 bpm) during the screening visit
- Current nicotine use or previous use within the past 6 months
- Current of previous musculoskeletal injury limiting physical activity
- A positive pregnancy test at any point during the study
- Currently breastfeeding
- Study physician discretion based on any other medical condition or medication
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Crossover
- Masking
- Open label
- Primary purpose
- Prevention
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT06599788 · STUDY00112233