Muscle fatigue in response to low-load blood flow-restricted elbow-flexion exercise: are there any sex differences?
Eur J Appl Physiol
; 118(10): 2089-2096, 2018 Oct.
Article
en En
| MEDLINE
| ID: mdl-30006670
ABSTRACT
PURPOSE:
This study aimed to determine whether men and women display a different magnitude of muscle fatigue in response to high-load (HL) and low-load blood flow-restricted (LLBFR) elbow-flexion exercise. We also explored to which extent both exercise protocols induce similar levels of muscle fatigue (i.e., torque decrement).METHODS:
Sixty-two young participants (31 men and 31 women) performed dynamic elbow flexions at 20 and 75% of one-repetition maximum for LLBFR and HL exercise, respectively. Maximum voluntary isometric contractions were performed before and after exercise to quantify muscle fatigue.RESULTS:
Men and women exhibited similar magnitude of relative torque decrement after both exercise protocols (p > 0.05). HL was more fatiguing (∆ torque output 11.9 and 23 N.m in women and men, respectively) than LLBFR resistance exercise (∆ torque output 8.3 and 15.4 N.m in women and men, respectively) in both sexes, but this was largely attenuated after controlling for the differences in volume load between protocols (p > 0.05).CONCLUSIONS:
These data show that torque decrement in response to LLBFR and HL dynamic elbow-flexion exercise does not follow a sexually dimorphic pattern. Our data also indicate that, if performed in a multiple-set fashion and prescribed for a given volume load, elbow-flexion LLBFR exercise induces similar levels of fatigue as HL acute training. Importantly, this occurs similarly in both sexes.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Flujo Sanguíneo Regional
/
Ejercicio Físico
/
Músculo Esquelético
/
Fatiga Muscular
/
Codo
/
Articulación del Codo
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Año:
2018
Tipo del documento:
Article