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Squat complet vs Squat à la parallèle : muscles travaillés

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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Fabrice SP le 21/02 22h48

Med Sci Sports Exerc 1996 Feb;28(2):218-24

High- and low-bar squatting techniques during weight-training.

Wretenberg P, Feng Y, Arborelius UP.

*** This study showed that there are major differences in muscle recruitment and joint torque between Weightlifting and Powerlifting squats. In particular, Weightlifters distribute the load more equally between hip and knee, whereas Powerlifters put relatively more load on the hip joint. The thigh muscular activity was found to be slightly higher for powerlifters. Note that Sumo style squats were not examined in this study, but it would probably have been found that this places even greater load on the hips as compared with the knees.

Eight Swedish national class weightlifters performed "high-bar" squats and six national class powerlifters performed "low-bar" squats, with a barbell weight of 65% of their 1 RM, and to parallel-and a deep-squatting depth. Ground reaction forces were measured with a Kistler piezo-electric force platform and motion was analyzed from a video record of the squats. A computer program based on free-body mechanics was designed to calculate moments of force about the hip and knee joints. EMG from vastus lateralis, rectus femoris, and biceps femoris was recorded and normalized. The peak moments of force were flexing both for the hip and the knee.

The mean peak moments of force at the hip were for the weightlifters 230 Nm (deep) and 216 Nm (parallel), and for the powerlifters 324 Nm (deep), and 309 Nm (parallel). At the knee the mean peak moments for the weightlifters were 191 Nm (deep) and 131 Nm (parallel), and for the powerlifters 139 Nm (deep) and 92 Nm (parallel). The weightlifters had the load more equally distributed between hip and knee, whereas the powerlifters put relatively more load on the hip joint. The thigh muscular activity was slightly higher for the powerlifters.


Si quelqu'un comprend quelque chose !

Le squat power place plus de stress sur les hanches alors que le full SQT se réparti entre les genoux et les hanches.

Par contre malgré que le squat power place bcp de stress sur les hanches, l'activité des cuisses est plus forte !!!

Ds le même registre on peut lire ailleur que le SQT // est mauvais pour les genoux car en demi-flexion une grosse partie de la charge est sur le genoux alors que le texte plus haut indique le contraire ??
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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Dx2jc le 21/02 22h55

Peut-être qu'en power les fessiers sont plus mis à contribution car il ont un effet de levier plus favorable que les cuisses, et donc le nerveux se concentre là-dessus :idea:.
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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Fabrice SP le 21/02 22h58

justement la il dise que les cuisses bossent plus au // qu'au complet !

il parle pas des fessiers !

mais normalement plus tu descends bas, plus les fessiers bossent
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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Dx2jc le 21/02 23h01

Bah les hanches les fessiers c'est la même région non :wtf:?...
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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Fabrice SP le 21/02 23h02

The effect of back squat depth on the EMG activity of 4 superficial hip and thigh muscles.

Caterisano A, Moss RF, Pellinger TK, Woodruff K, Lewis VC, Booth W, Khadra T.

The Department of Health and Exercise Science, Furman University, 3300 Poinsett Highway, Greenville, South Carolina 29613, USA. tony.caterisano@furman.edu

The purpose of this study was to measure the relative contributions of 4 hip and thigh muscles while performing squats at 3 depths. Ten experienced lifters performed randomized trials of squats at partial, parallel, and full depths, using 100-125% of body weight as resistance. Electromyographic (EMG) surface electrodes were placed on the vastus medialis (VMO), the vastus lateralis, (VL), the biceps femoris (BF), and the gluteus maximus (GM). EMG data were quantified by integration and expressed as a percentage of the total electrical activity of the 4 muscles. Analysis of variance (ANOVA) and Tukey post hoc tests indicated a significant difference (p < 0.001*, p = 0.056**) in the relative contribution of the GM during the concentric phases among the partial- (16.9%*), parallel- (28.0%**), and full-depth (35.4%*) squats. There were no significant differences between the relative contributions of the BF, the VMO, and the VL at different squatting depths during this phase. The results suggest that the GM, rather than the BF, the VMO, or the VL, becomes more active in concentric contraction as squat depth increases.

PMID: 12173958 [PubMed - indexed for MEDLINE]


Bon en fait les cuisses travaillent plus au SQT // car les fessiers travaillent moins ! :D
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Squat complet vs Squat à la parallèle : muscles travaillés

Messagepar Rudy le 22/02 09h31

Gabriel a mis les chiffres sur son site :

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