Heat Acclimation, Hand Cooling Efficacy, and Adaptation Maintenance.

NCT04053465 | Completed Results

• 1 other identifier: H14-188
• Study Type: interventional
• Target: 34
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study had three aims:

1. 1.To determine the impact of consecutive days of exercise on thermoregulation and cardiovascular strain.
2. 2.To determine the efficacy of a hand cooling device to cool individuals throughout a heat acclimation period.
3. 3.To assess the maintenance of thermoregulatory and cardiovascular adaptations derived from heat acclimation during a 25-day intermittent exercise-heat exposure protocol.

Conditions

Heat

Outcome Measures

Primary Outcomes (1)

• Internal Body Temperature

  Rectal temperature was assessed five days following measurement at baseline.

  5 days

Secondary Outcomes (1)

• Heart Rate

  5 days

Study Arms (2)

Exercise in heat group

EXPERIMENTAL

Exercise in a hot environment

Other: Heat acclimation

Exercise in cool group

PLACEBO COMPARATOR

Exercise in a cool environment

Other: Exercise in a cool environment

Interventions

Heat acclimation OTHER

14 days of aerobic exercise in a hot environment

Exercise in heat group

Exercise in a cool environment OTHER

14 days of aerobic exercise in a cool environment

Exercise in cool group

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• no chronic health problems
• no previous history of exertional heat stroke within the past 3 years
• no history of cardiovascular, metabolic or respiratory disease
• no current musculoskeletal injury that limits physical activity

You may not qualify if:

• women
• exercise less than once per week
• VO2max \< 45 ml/kg/min

Sponsors & Collaborators

• University of Connecticut: lead

Related Publications (1)

• Pryor RR, Pryor JL, Vandermark LW, Adams EL, Brodeur RM, Armstrong LE, Lee EC, Maresh CM, Casa DJ. Short term heat acclimation reduces heat strain during a first, but not second, consecutive exercise-heat exposure. J Sci Med Sport. 2021 Aug;24(8):768-773. doi: 10.1016/j.jsams.2021.03.020. Epub 2021 Apr 6.

  PMID: 33846088 DERIVED

MeSH Terms

Interventions

Exercise

Intervention Hierarchy (Ancestors)

Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Results Point of Contact

• Title: Dr. Riana Pryor
• Organization: University at Buffalo

rpryor@buffalo.edu

7168295456

Study Officials

• Douglas J Casa, PhD

  University of Connecticut

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Study Record Dates

• First Submitted: August 7, 2019
• First Posted: August 12, 2019
• Study Start: August 1, 2014
• Primary Completion: March 31, 2015
• Study Completion: March 31, 2015
• Last Updated: February 27, 2020
• Results First Posted: February 27, 2020

Record last verified: 2020-02

Data Sharing

• IPD Sharing: Will not share