Cold-water immersion blunts and delays increases in circulating testosterone and cytokines post-resistance exercise
Earp JE, Hatfield DL, Sherman A, Lee EC, Kraemer WJ
European journal of applied physiology · 30 citas
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Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
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Quién lo pagó
- Financiación
- Financiación independiente
- Universidad u hospital
- University of Rhode Island
Según 1 financiador declarado.
Publicación
- Publicado
- 2019-06-20 · Eur J Appl Physiol · vol. 119 · número 8 · págs. 1901–1907
- Editorial
- Springer Science+Business Media
- Citado
- 36 citas · más que el 90% de estudios similares · 2.8× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 26 trabajos
- Acceso
- Acceso abierto (copia en repositorio) · CC-BY
- Áreas de investigación
- Exercise and Physiological Responses · Sports Performance and Training · Cardiovascular and exercise physiology
- Palabras clave
- cold water immersion, resistance training, free testosterone, interleukin-6, TNF-α, cytokines, post-exercise recovery, muscle hypertrophy, anabolic response, passive recovery, back squat
- MeSH
- humans, water, testosterone, cytokines, hypothermia, induced, immersion, male, cold temperature, resistance training, young adult, myalgia
5 autores
- Jacob E. Earp🇺🇸 · autor de correspondenciaUniversity of Rhode Island
- Disa L. Hatfield🇺🇸University of Rhode Island
- Andrew Sherman🇺🇸University of Rhode Island
- Elaine C. Lee🇺🇸University of Connecticut
- William J. Kraemer🇺🇸The Ohio State University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Introduction
Cold-water immersion (CWI) is often used to promote recovery by reducing exercise-induced muscle damage, soreness, and inflammation. However, recent reports have cautioned that CWI may attenuate the adaptive response to resistance training.
Purpose
To determine the effect of post resistance-exercise CWI on circulating free testosterone (T) and cytokine (IL-6 and TNF-α) response.
Methods
Using a randomized and counterbalanced repeated-measures design, 11 resistance-trained men completed two workouts (6 sets of 10 repetitions of back squats at 80% of maximum load) a week apart after which they took part in either 15 min of CWI (15 °C) or passive recovery. T, IL-6, and TNFα were measured in blood samples taken before (PRE) and 5 (5POST), 15 (15POST), 30 (30POST), and 60 (60POST) min post-exercise and compared between treatments and over time.
Results
For T, a significant interaction effect of condition over time (p = 0.030) as well as greater relative concentrations of T in CON (Δ9.2%) than CWI (Δ-0.5%, p = 0.049) at 30POST were observed. In addition, at 60POST, T dropped below PRE values in CWI (Δ-10.4%, p = 0.028) but not in CON (Δ-1.6%, p = 0.850). A suppressed cytokine response was observed after CWI in IL-6 at 30POST (CWI: Δ4.9%, CON: Δ47.5%, p = 0.041) and TNFα at 15POST (CWI: Δ5.3%, CON: Δ17.0%, p = 0.022).
Conclusions
CWI blunted the T and cytokine response after a bout of resistance exercise. These results indicate that CWI results in an altered anabolic response and may help to explain the previous observation of attenuated hypertrophy when CWI is used after resistance exercise.
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