Postexercise cold-water immersion does not attenuate muscle glycogen resynthesis
Gregson W, Allan R, Holden S, Phibbs P, Doran D, Campbell I, Waldron S, Joo CH, Morton JP
Medicine and science in sports and exercise · 29 citas
Etiquetas de revisión
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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 no declarada
Publicación
- Publicado
- 2013-02-01 · Med Sci Sports Exerc · vol. 45 · número 6 · págs. 1174–1181
- Editorial
- Lippincott Williams & Wilkins
- Citado
- 41 citas · más que el 92% de estudios similares · 3.9× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 40 trabajos
- Acceso
- De pago
- Áreas de investigación
- Exercise and Physiological Responses · Thermoregulation and physiological responses · Cardiovascular and exercise physiology
- Palabras clave
- Glycogen, Internal medicine, Endocrinology, Ingestion, Medicine, Morning, Skeletal muscle, Chemistry
- MeSH
- thigh, muscle, skeletal, humans, glycogen, body temperature, exercise, baths, cross-over studies, bicycling, adult, male, cold temperature, young adult, healthy volunteers, biomarkers
9 autores
- Warren A. Gregson🇬🇧Liverpool John Moores University
- Robert Allan🇬🇧Liverpool John Moores University
- Susan Holden🇬🇧Liverpool John Moores University
- Padraic J. Phibbs🇬🇧Liverpool John Moores University
- Dominic A. Doran🇬🇧Liverpool John Moores University
- Iain T Campbell🇬🇧Wythenshawe Hospital; Liverpool John Moores University
- Sarah Waldron🇬🇧Wythenshawe Hospital; Liverpool John Moores University
- Chang-Hwa Joo🇬🇧Liverpool John Moores University
- James Peter Morton🇬🇧Liverpool John Moores University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
The aim of this study was to test the hypothesis that postexercise cold-water immersion (CWI, via its associated reductions in skeletal muscle blood flow) attenuates muscle glycogen resynthesis during short-term recovery from exhaustive exercise.
Methods
In a repeated-measures design, nine recreationally active men performed an exhaustive glycogen depleting cycling protocol (consisting of intermittent exercise the night before and steady-state exercise on the subsequent morning of the main trial) followed by 10 min of lower-limb CWI (8°C) or remained seated in normal ambient conditions (CONT). Subjects were fed carbohydrate (CHO) at an ingestion rate of 0.6 g·kg body mass at 30 min postexercise and at 1, 2, and 3 h postexercise.
Results
Reductions in thigh skin temperature and muscle temperature during postexercise recovery were greater in CWI compared with CONT (P < 0.01). In addition, norepinephrine and blood glucose concentrations were increased and decreased, respectively, during recovery in CWI compared with CONT (P < 0.01). Postexercise muscle glycogen (CONT and CWI postexercise = 76 ± 43 and 77 ± 26 mmol·kg dry weight [dw], respectively; mean ± SD) progressively increased (P < 0.01) during recovery, although rates of resynthesis did not differ (P = 0.719) between conditions (CONT and CWI 4 h postexercise = 160 ± 34 and 157 ± 59 mmol·kg dw, respectively). Total glycogen synthesis during recovery was comparable (CONT and CWI = 83 ± 43 and 79 ± 58 mmol·kg dw, respectively).
Conclusions
Postexercise CWI does not attenuate muscle glycogen resynthesis rates during short-term recovery even when CHO availability is considered suboptimal. Athletes who regularly incorporate CWI as a recovery strategy to alleviate symptoms of exercise-induced muscle damage should therefore not be concerned with potential negative effects of the associated reductions in muscle blood flow on the restoration of muscle glycogen stores.
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