Journal article
Neuromuscular and gene signaling responses to passive whole-body heat stress in young adults
Journal of thermal biology, Vol.118, 103730
12/2023
DOI: 10.1016/j.jtherbio.2023.103730
PMID: 37890230
Abstract
This study aimed to investigate whether acute passive heat stress 1) decreases muscle Maximal Voluntary Contraction (MVC); 2) increases peripheral muscle fatigue; 3) increases spinal cord excitability, and 4) increases key skeletal muscle gene signaling pathways in skeletal muscle. Examining the biological and physiological markers underlying passive heat stress will assist us in understanding the potential therapeutic benefits. MVCs, muscle fatigue, spinal cord excitability, and gene signaling were examined after control or whole body heat stress in an environmental chamber (heat; 82 °C, 10% humidity for 30 min). Heart Rate (HR), an indicator of stress response, was correlated to muscle fatigue in the heat group (R = 0.59; p < 0.05) but was not correlated to MVC, twitch potentiation, and H reflex suppression. Sixty-one genes were differentially expressed after heat (41 genes >1.5-fold induced; 20 < 0.667 fold repressed). A strong correlation emerged between the session type (control or heat) and principal components (PC1) (R = 0.82; p < 0.005). Cell Signal Transduction, Metabolism, Gene Expression and Transcription, Immune System, DNA Repair, and Metabolism of Proteins were pathway domains with the largest number of genes regulated after acute whole body heat stress. Acute whole-body heat stress may offer a physiological stimulus for people with a limited capacity to exercise.
Details
- Title: Subtitle
- Neuromuscular and gene signaling responses to passive whole-body heat stress in young adults
- Creators
- Chu-Ling Yen - Chang Gung Memorial HospitalMichael A. Petrie - University of IowaManish Suneja - University of IowaRichard K. Shields - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of thermal biology, Vol.118, 103730
- DOI
- 10.1016/j.jtherbio.2023.103730
- PMID
- 37890230
- ISSN
- 0306-4565
- eISSN
- 1879-0992
- Grant note
- DOI: 10.13039/100008893, name: University of Iowa; DOI: 10.13039/100000002, name: National Institutes of Health, award: R01 HD084645, R01HD082109; DOI: 10.13039/100006108, name: National Center for Advancing Translational Sciences, award: UL1TR002537
- Language
- English
- Electronic publication date
- 10/2023
- Date published
- 12/2023
- Academic Unit
- Orthopedics and Rehabilitation; Physical Therapy and Rehabilitation Science; Nephrology; Internal Medicine
- Record Identifier
- 9984487501802771
Metrics
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