Fatigue; Heat, Hyperthermia, Work-Related Condition
Conditions
Keywords
hyperthermia, worker, fatigue
Brief summary
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
BEHAVIORALStandard work pace
Participants will work at a standard pace of one box per minute during the box carrying protocol
BEHAVIORALReduced-pace work
Participants will work at a slower pace than the standard work pace of the box carrying protocol
BEHAVIORALIncreased-pace work
Participants will work at a faster pace than the standard work pace of the box carrying protocol
BEHAVIORALAdditional 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.
Sponsors
State University of New York at Buffalo
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cardiac Troponin | 2 hours following work protocol, approximately 6 hours into the trial | Serum cardiac troponin concentration |
| Maximum Core Temperature | End of work protocol, approximately 4 hours into the trial | Highest core temperature attained during the work protocol |
Contacts
CONTACTRiana Pryor
Outcome results
None listed