Impact of Heat on Dual Task Performance

NCT07629414 | Recruiting

• 1 other identifier: STUDY00002806
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 1

Brief Summary

This study looks at how people response performing single and dual tasks (cognitive and motor) prior to and after a rapid heat stress that increased core temperature to 39C.

Conditions

Healthy; Heat Stress, Exertional

Outcome Measures

Primary Outcomes (8)

• expanded timed up and go

  A timed test where participants stand from a chair, walk 10 m, turn, and return to the chair. Longer times indicate slower gait speed

  baseline and post-heat stress, both day 1

• Firefighter balance test

  A timed test where participants walk an obstacle course measuring dynamic balance, having to step up/down, walk a narrow path, and duck under an obstacle. Longer times indicate worse dynamic balance.

  baseline and post-heat stress, both day 1

• Backward Digit Recall

  A timed test where participants recall a series of numbers in reverse order. More digits indicate better recall.

  baseline and post-heat stress, both day 1

• Serial Sevens Subtraction

  A timed test where participants count backwards from a starting value by 7s, with the more correct responses in 20 seconds indicating better cognitive ability for this task.

  baseline and post-heat stress, both day 1

• Serial Sevens Subtraction-Expanded Timed Up and Go Dual Task

  Performance of serial sevens subtractions while performing the Expanded timed up and go test (ETUG). This test is timed (ETUG) and correct responses tabulated (subtraction).

  baseline and post-heat stress, both day 1

• Serial Sevens Subtraction-Firefighter Balance Test Dual Task

  Performance of serial sevens subtractions while performing the Firefighter Balance Test (FFBT). This test is timed (FFBT) and correct responses tabulated (subtraction).

  baseline and post-heat stress, both day 1

• Backward Digit Recall-Expanded Timed Up and Go Dual Task

  Performance of backward digit recall while performing the Expanded timed up and go test (ETUG). This test is timed (ETUG) and correct responses tabulated (Recall).

  baseline and post-heat stress, both day 1

• Backward Digit Recall-Firefighter Balance Test Dual Task

  Performance of backward digit recall while performing the Firefighter Balance Test (FFBT). This test is timed (FFBT) and correct responses tabulated (Recall).

  baseline and post-heat stress, both day 1

Study Arms (1)

Heat stress

EXPERIMENTAL

Participants will receive the heat stress stimulus

Other: heat stress

Interventions

heat stress OTHER

participants will walk in a heat chamber to increase core temperature

Heat stress

Eligibility Criteria

• Age: 18 Years - 57 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• health via PARQ+

You may not qualify if:

• inability to safely swallow core temperature pill
• musculoskeletal injury in past 3 months
• diagnosed concussion or vestibular disorder
• known pregnancy

Sponsors & Collaborators

• Louisiana State University Health Sciences Center Shreveport: lead

Study Sites (1)

LSU Health Shreveport

Shreveport, Louisiana, 71103, United States

RECRUITING

Related Publications (6)

• Cheung SS, McLellan TM, Tenaglia S. The thermophysiology of uncompensable heat stress. Physiological manipulations and individual characteristics. Sports Med. 2000 May;29(5):329-59. doi: 10.2165/00007256-200029050-00004.

  PMID: 10840867 BACKGROUND

• Moreira PED, Dieguez GTO, Bredt SDGT, Praca GM. The Acute and Chronic Effects of Dual-Task on the Motor and Cognitive Performances in Athletes: A Systematic Review. Int J Environ Res Public Health. 2021 Feb 10;18(4):1732. doi: 10.3390/ijerph18041732.

  PMID: 33579018 BACKGROUND

• Ness BM, Zimney K, Schweinle WE, Cleland JA. DUAL-TASK ASSESSMENT IMPLICATIONS FOR ANTERIOR CRUCIATE LIGAMENT INJURY: A SYSTEMATIC REVIEW. Int J Sports Phys Ther. 2020 Dec;15(6):840-855. doi: 10.26603/ijspt20200840.

  PMID: 33344002 BACKGROUND

• Ball D. Contrasting effects of heat stress on neuromuscular performance. Exp Physiol. 2021 Dec;106(12):2328-2334. doi: 10.1113/EP088191. Epub 2020 Jul 15.

  PMID: 32608071 BACKGROUND

• Doohan MA, Watzek JT, King N, White MJ, Stewart IB. Does increased core temperature alter cognitive performance during exercise-induced heat strain? A narrative review. J Appl Physiol (1985). 2023 Jul 1;135(1):35-52. doi: 10.1152/japplphysiol.00070.2023. Epub 2023 May 4.

  PMID: 37141422 BACKGROUND

• Donnan K, Williams EL, Morris JL, Stanger N. The effects of exercise at different temperatures on cognitive function: A systematic review. Psychol Sport and Exerc. 2021;54.

  BACKGROUND

MeSH Terms

Conditions

Heat Stress Disorders

Interventions

Heat-Shock Response

Condition Hierarchy (Ancestors)

Wounds and Injuries

Intervention Hierarchy (Ancestors)

Stress, Physiological; Physiological Phenomena

Study Officials

• Erin McCallister

  Louisiana State University Health Sciences Center Shreveport

  STUDY DIRECTOR

Central Study Contacts

Erin McCallister, PhD

CONTACT

3188133502; erinmadara3@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: OTHER
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 8, 2026
• First Posted: June 5, 2026
• Study Start: October 9, 2024
• Primary Completion: August 1, 2026
• Study Completion: August 1, 2026
• Last Updated: June 5, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)