Mild hypohydration impairs cycle ergometry performance in the heat: A blinded study
Adams JD, Scott DM, Brand NA, Suh HG, Seal AD, McDermott BP, Ganio MS, Kavouras SA
Scandinavian journal of medicine & science in sports · 22 citas
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Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
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
- 2019-01-19 · Scand J Med Sci Sports · vol. 29 · número 5 · págs. 686–695
- Editorial
- Wiley
- Citado
- 33 citas · más que el 87% de estudios similares · 2.1× el promedio de su campo
- Referencias
- 29 trabajos
- Acceso
- De pago
- Áreas de investigación
- Thermoregulation and physiological responses · Exercise and Physiological Responses · Sports Performance and Training
- Palabras clave
- Cycling, Time trial, Medicine, Animal science, Cycle ergometer, Anesthesia, Internal medicine, Physical therapy, Heart rate, Blood pressure
- MeSH
- humans, dehydration, body weight, lactic acid, blood glucose, blood proteins, urinalysis, cross-over studies, ergometry, perception, sweating, specific gravity, bicycling, adult, male, athletic performance, hot temperature, young adult
8 autores
- J.D. Adams🇺🇸University of Arkansas at Fayetteville
- Dylan Scott🇺🇸University of Arkansas at Fayetteville
- Natasha A. Brand🇺🇸University of Arkansas at Fayetteville
- HyunGyu Suh🇺🇸Arizona State University
- Adam Seal🇺🇸Arizona State University; University of Arkansas at Fayetteville
- Brendon P. McDermott🇺🇸University of Arkansas at Fayetteville
- Matthew S. Ganio🇺🇸University of Arkansas at Fayetteville
- Stavros Anastasios Kavouras🇺🇸 · autor de correspondenciaArizona State University
Resumen
El texto original del estudio, en el idioma en que se publicó.
The aim of the present study was to observe the effect of mild hypohydration on exercise performance with subjects blinded to their hydration status. Eleven male cyclists (weight 75.8 ± 6.4 kg, VO2peak : 64.9 ± 5.6 mL/kg/min, body fat: 12.0 ± 5.8%, Powermax : 409 ± 40 W) performed three sets of criterium-like cycling, consisting of 20-minute steady-state cycling (50% peak power output), each followed by a 5-km time trial at 3% grade. Following a familiarization trial, subjects completed the experimental trials, in counter-balanced fashion, on two separate occasions in dry heat (30°C, 30% rh) either hypohydrated (HYP) or euhydrated (EUH). In both trials, subjects ingested 25 mL of water every 5 minutes during the steady-state and every 1 km of the 5-km time trials. In the EUH trial, sweat losses were fully replaced via intravenous infusion of isotonic saline, while in the HYP trial, a sham IV was instrumented. Following the exercise protocol, the subjects' bodyweight was changed by -0.1 ± 0.1% and -1.8 ± 0.2% for the EUH and HYP trial, respectively (P re ) was higher in the HYP trial throughout the third steady-state and 5-km time trial (P < 0.05). These data suggest that mild hypohydration, even when subjects were unaware of their hydration state, impaired cycle ergometry performance in the heat probably due to greater thermoregulatory strain.
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