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Not yet recruitingNCT07046026Updated Jun 30, 2026

Work Design Interventions for Older Workers During Consecutive Days in the Heat

An interventional study of Standard work pace and Additional rest breaks in Hyperthermia, Fatigue; Heat and Work-Related Condition, sponsored by State University of New York at Buffalo. Not yet recruiting. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-30.

Sponsored by State University of New York at Buffalo · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study 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 across two consecutive days of work.

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.

02

Conditions studied

  • Hyperthermia
  • Fatigue; Heat
  • Work-Related Condition

Keywords

  • hyperthermia
  • worker
03

In context

Hyperthermia

256 studies on the registry are indexed under Hyperthermia; 73 are open to participants now.

This study's planned enrollment of 32 is below the median of 40 across 232 interventional studies indexed under Hyperthermia.

Browse Hyperthermia studies →

Lead sponsor

State University of New York at Buffalo is the lead sponsor of 294 studies on the registry; 63 are open to participants now.

Of its 19 completed or terminated interventional studies of FDA-regulated products, 15 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

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

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
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
32 participants (estimated)

Study arms

  • Active comparator
    Standard work pace first

    The order of the interventions is standard work pace first, followed by the rest trial second.

    Behavioral: Standard work pace · Behavioral: Additional rest breaks

  • Experimental
    Additional rest breaks first

    The order of the interventions is the additional rest breaks first and the standard work pace second.

    Behavioral: Standard work pace · Behavioral: Additional rest breaks

Interventions

  • BehavioralStandard work pace

    On two consecutive days, participants will work at a standard pace of one box per minute during the box carrying protocol

  • BehavioralAdditional rest breaks

    On two consecutive days, participants will work at the standard work pace during the box carrying protocol and have superimposed 5 minutes of rest every 30 minutes.

06

What researchers measure

Primary outcomes

  1. Cardiac Troponin

    Serum cardiac troponin concentration

    Time frame: 2 hours following work protocol, approximately 6 hours into the trial

  2. Maximum Core Temperature

    Highest core temperature attained during the work protocol

    Time frame: End of work protocol, approximately 4 hours into the trial

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — A spreadsheet of the cleaned, de-identified individual data for all variables will be shared on at clinicaltrials.gov without restriction to ensure public availability. Individual data will be identified using unique participant identifier numbers. In addition to the datasets, a study protocol, data dictionary defining and describing all variables, and data collection instruments will be shared and associated with the relevant datasets.

Supporting information: Study protocol

Time frame: Data from this project will be made available as soon as able and no later than the time of the final publication. Original data will be preserved indefinitely after the end of the funding period.

Access criteria: Pooled and de-identified data will be made available to interested researchers upon email request.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 30, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07046026
Responsible party
Riana Pryor (Principal Investigator, State University of New York at Buffalo) — Principal investigator
First posted
Jul 1, 2025
Start date
Sep 2028 (estimated)
Primary completion
Sep 2030 (estimated)
Completion
Sep 2030 (estimated)
Last update
Jun 30, 2026

Study contacts

Riana Pryor
Contact
rpryor@buffalo.edu
716-829-5456

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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