Fatigue index and fatigue rate during an anaerobic performance under hypohydrations
Naharudin MN, Yusof A
PloS one · 17 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (clasificado por nuestro filtro de IA)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Universidad u hospital
- Universiti Malaya
Según 1 financiador declarado y la declaración de financiación del texto completo.
Publicación
- Publicado
- 2013-10-30 · PLoS One · vol. 8 · número 10 · pág. e77290
- Editorial
- Public Library of Science
- Citado
- 30 citas · más que el 71% de estudios similares · 0.7× el promedio de su campo
- Referencias
- 30 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Thermoregulation and physiological responses · Muscle metabolism and nutrition · Sports Performance and Training
- Palabras clave
- Anaerobic exercise, Wingate test, Rating of perceived exertion, Medicine, Animal science, Mathematics, Physical therapy, Internal medicine, Heart rate, Biology, Blood pressure
- MeSH
- humans, dehydration, fatigue, exercise test, oxygen consumption, physical endurance, bicycling, male, physical exertion, young adult
2 autores
- Mohamed Nashrudin Naharudin🇲🇾 · autor de correspondenciaUniversity Malaya Medical Centre; University of Malaya
- Ashril Yusof🇲🇾University Malaya Medical Centre; University of Malaya
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
Since hypohydration commonly occurs in sports, studies on anaerobic exercise performance under this condition have been extensively carried out. When describing anaerobic performance, authors usually refer to a drop in anaerobic performance as fatigue index (FI) which is conventionally calculated using peak and low power data points. Meanwhile, another possible method in explaining anaerobic fatigue is using the rate constant which is derived from the exponential decline of power output known as fatigue rate (FR). Few studies have demonstrated that there was no change in anaerobic performance under mild hypohydrations.
Purpose
This study aimed to compare the kinetics of power output using FI and FR of an anaerobic performance (Wingate test) under 2, 3 and 4% state of hypohydrations.
Method
Thirty two collegiate cyclists (age = 22 ± 2 years; body weight = 71.45 ± 3.43 kg; height = 173.23 ± 0.04 cm) were matched using their baseline anaerobic peak power (APP) then randomly divided into 4 groups of EU (euhydrated), 2H, 3H and 4H respectively.
Results
As expected the, FI, APP, anaerobic lower power (ALP) and rating of perceived exertion (RPE) did not show significant differences between and within the groups. However, the FR in 3H (0.018 ± 0.005 s(-1)) and 4H (0.019 ± 0.010 s(-1)) were significantly lower than EU (0.033 ± 0.012 s(-1)). Post-test FR also showed significant reduction in 3H and 4H compared to their pre-test values (p<0.05).
Conclusion
Despite the lack of changes in APP and RPE, subjects in 3H and 4H showed evidence of lower reduction of power output over time. The findings support earlier reports which showed no change in anaerobic performance under mild hypohydrations. The relatively lower FR suggests higher drive in maintaining power output under hypohydrations of 3 and 4% body weight.
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