Cold-Water Immersion Impairs Power Earlier than Strength Through Time-Dependent Reductions in Intramuscular Temperature in Human Dorsiflexor Muscles
Malekzadeh R, Richards AJ, Vaziri A, Laham R, Paris MT, Cheng AJ
Medicine and science in sports and exercise · 0 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Ontario Research Fund
- Gobierno
- Canadian Foundation for Innovation â€" John R. Evan’s Leaders Fund
Según 2 financiadores declarados.
Publicación
- Publicado
- 2025-11-25 · Med Sci Sports Exerc · vol. 58 · número 4 · págs. 733–744
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 0 citas · más que el 53% de estudios similares · 0.0× el promedio de su campo
- Referencias
- 44 trabajos
- Acceso
- De pago
- Áreas de investigación
- Thermoregulation and physiological responses · Sports Performance and Training · Exercise and Physiological Responses
- Palabras clave
- cold water immersion, intramuscular temperature, neuromuscular function, muscle power, isometric strength, dorsiflexor muscles, post-activation potentiation, M-wave, post-exercise recovery, muscle contractility
- MeSH
- muscle, skeletal, humans, body temperature, cross-over studies, immersion, skin temperature, muscle contraction, time factors, adult, female, male, muscle strength, cold temperature, young adult
6 autores
- Rohin Malekzadeh🇨🇦York University
- Andrew J. Richards🇨🇦York University
- ALIREZA VAZIRI🇨🇦York University
- Robert Laham🇨🇦York University
- Michael T. Paris🇨🇦York University
- Arthur J. Cheng🇨🇦York University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Introduction
We aimed to investigate the time- and intramuscular temperature-dependent changes in neuromuscular function throughout 1 h of cold-water immersion (CWI) at 10°C. It was hypothesized that acute CWI (30 min) would impair muscle contractility by drastically reducing intramuscular temperature.
Methods
Twelve healthy participants (nine males and three females) partook in a randomized crossover design study involving 1-h CWI at 10°C of their lower leg, with three experimental visits consisting of 1) 1-h CWI at 10°C (CWI-only), 2) nonfatiguing exercise followed by 1-h CWI at 10°C to mimic the use of postexercise CWI (Ex + CWI), and 3) passive muscle preheating followed by 1-h CWI at 10°C (Heat + CWI). Skin temperature, intramuscular temperature, and neuromuscular function were periodically assessed in the dorsiflexors throughout the 1 h of CWI.
Results
Decreased peak power was observed after 10 min of CWI, CWI-only (50.3 ± 16.0%, P < 0.05), Ex + CWI (55.0 ± 18.3%, P < 0.05), and Heat + CWI (62.0 ± 16.8%, P < 0.05), whereas maximal isometric torque decreased after ≥30 min of CWI, CWI-only (81.1 ± 9.1%, P < 0.05), Ex + CWI (86.6 ± 14.3%, P < 0.05), and Heat + CWI (88.7 ± 10.0%, P < 0.05). Decreases in M-wave peak-to-peak amplitude, 50-Hz torque, and postactivation potentiation were only evident following prolonged CWI (P < 0.05).
Conclusions
These results highlight that peak power is more sensitive to reductions in intramuscular temperature than maximal isometric strength, reflecting a time- and temperature-dependent effect on skeletal muscle function.
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