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One size does not fit all: Methodological considerations and recommended solutions for intramuscular temperature
Patrick Rodrigues1, Lucas B R Orssatto2, Anne Hecksteden3
1Institute of Physiology, Medical University of Innsbruck, Innsbruck, Austria; Institute of Sport Science, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria; Te Huataki Waiora School of Health, University of Waikato, Hamilton, New Zealand.
Journal of Thermal Biology
|September 6, 2024
Summary
Muscle temperature measurement lacks standardized methods, leading to inconsistent research findings. This study proposes a body composition-based approach for accurate intramuscular temperature assessment in exercise and environmental physiology.
Area of Science:
- Exercise Physiology
- Environmental Physiology
- Human Kinetics
Background:
- Intramuscular temperature kinetics are crucial for understanding physiological responses to exercise and environmental stressors.
- Current literature lacks standardized methodologies for muscle temperature assessment, leading to significant variations in measurement depth and techniques.
- Individual body composition differences, such as subcutaneous fat and muscle thickness, complicate consistent muscle temperature measurement.
Purpose of the Study:
- To highlight the inconsistencies in current muscle temperature assessment methods.
- To discuss the challenges posed by variations in needle depth and body composition.
- To propose a standardized, body composition-based approach for intramuscular temperature assessment.
Main Methods:
- Review and summary of diverse muscle temperature assessment procedures and techniques from existing literature.
- Analysis of variations in intramuscular needle depth, subcutaneous fat, and muscle thickness across different studies and populations.
- Development of a systematic approach for intramuscular temperature measurement tailored to individual body composition.
Main Results:
- Significant variability exists in reported muscle temperature assessment depths (1.5 cm to 4 cm).
- Body composition parameters (e.g., thigh subcutaneous fat, vastus lateralis thickness) vary widely, impacting measurement consistency.
- Inconsistent methods result in unreliable muscle temperature profiles and kinetics during and after thermal or exercise stress.
Conclusions:
- Standardization of muscle temperature assessment is essential for reliable and translatable research findings.
- A personalized approach, considering individual body composition, is necessary for accurate intramuscular temperature measurement.
- Implementing a robust, systematic method will enhance the understanding of muscle temperature responses to physiological stressors.
Keywords:
Environmental physiologyFat thicknessMuscle temperatureMuscle thicknessThermophysiologyUltrasound assessmentMore Related Videos
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