Associations of maximal voluntary isometric hip extension torque with muscle size of hamstring and gluteus maximus and intra-abdominal pressure.
Eur J Appl Physiol
; 117(6): 1267-1272, 2017 Jun.
Article
em En
| MEDLINE
| ID: mdl-28429109
ABSTRACT
PURPOSE:
Muscle size of the hamstring and gluteus maximus (GM) as well as intra-abdominal pressure (IAP) are considered as factors affecting the torque development during hip extension. This study examined the associations of torque development during maximal voluntary isometric hip extension with IAP and muscle size of the hamstring and GM.METHODS:
Anatomical cross-sectional area (ACSA) of the hamstring and thickness of GM were determined in 20 healthy young males using an ultrasonography apparatus (Experiment 1). Torque and IAP were simultaneously measured while subjects performed maximal voluntary isometric hip extension. The IAP was measured using a pressure transducer placed in the rectum and determined at the time at which the developed torque reached to the maximal. In Experiment 2, torque and IAP were measured during maximal voluntary isometric hip flexion in 18 healthy young males.RESULTS:
The maximal hip extension torque was significantly correlated with the IAP (r = 0.504, P = 0.024), not with the ACSA of the hamstring (r = 0.307, P = 0.188) or the thickness of GM (r = 0.405, P = 0.076). The relationship was still significant even when the ACSA of the hamstring and the thickness of GM were adjusted statistically (r = 0.486, P = 0.041). The maximal hip flexion torque was not significantly correlated with the IAP (r = -0.118, P = 0.642).CONCLUSION:
The current results suggest that IAP can contribute independently of the muscle size of the agonists to maximal voluntary hip extension torque.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Abdome
/
Músculos Isquiossurais
/
Contração Isométrica
Tipo de estudo:
Risk_factors_studies
Limite:
Adult
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Humans
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Male
Idioma:
En
Revista:
Eur J Appl Physiol
Assunto da revista:
FISIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Japão