Sentences with phrase «knee extension moments»

The split squat appears to display greater hip extension moments and smaller knee extension moments than the standard back squat.

As with squats, as load increases, hip extension moments increase faster than knee extension moments.

Meyer (2005, unpublished thesis) reported that the split squat displayed smaller knee extension moments than the standard back squat (118 ± 26Nm vs. 186 ± 30Nm) albeit with different relative loads.

Yamashita (1988) compared hamstrings EMG amplitude during isolated hip extension and isolated knee extension movements performed with 20 % of the MVIC moment to hamstrings EMG amplitude with a combined hip and knee extension movement using the same hip and knee extension moments.

They noted that squat jumps produced greater hip extension moment than back squats with a moderate load (272 vs. 149Nm) and that the ratio between hip extension moments in these two exercises was smaller than the ratio between knee extension moments (1.8 vs. 2.3 times).

Intervention — any acute study assessing knee extension moments in the sagittal plane during the split squat exercise

The split squat displays greater hip extension moments, and smaller knee extension moments than the standard back squat.

In comparison, knee extension moments appear to be much smaller.

Comparing different squat variations, Swinton et al. (2012) reported that peak knee extension moment arm lengths were greatest in the order box > traditional > powerlifting squat variations.

As relative load increases during performance of the conventional deadlift exercise, the ratio of the net hip extension moment to the net knee extension moment also increases.

Also, Biscarini et al. (2011) found that in a model of Smith machine squats, inclining the trunk closer to the horizontal, moving the tibia closer to the vertical, and placing more weight upon the fore - foot all led to an increase in the hip extension moment and a corresponding reduction in the knee extension moment.

Knee extension moment of the front leg is greatest with a more acute shank angle (60 degrees) and a shorter step length (55 % of leg length).

The knee extension moment of the front leg is greatest with a more acute shank angle (60 degrees) and a shorter step length (55 % of leg length).

The knee extension moment of the rear leg did not differ between conditions.

The knee extension moment of the front leg was greatest with a more acute shank angle (60 degrees) and a shorter step length (55 % of leg length) and smallest with an overextended shank angle (105 degrees) and a longer step length (85 % of leg length).

Bryanton et al. (2011) found that as relative load increased from 50 % of 1RM to 90 % of 1RM, the ratio of net hip extension moment to net knee extension moment increased from 1.1 times to 1.5 times, while Flanagan & Salem (2007) also observed a greater increase in net hip extension compared to net knee extension moment, with increasing load.

As relative load increases during performance of the back squat exercise, the ratio of the net hip extension moment to the net knee extension moment also increases.

In both groups, the external moment arm length was positive (i.e. it requires a knee extension moment from the musculature to counter it).

The knee external moment arm length was negative in the straight bar deadlift (i.e. it requires a knee flexion moment arm from the muscle to counter it) but positive in the hexagonal bar deadlift (i.e. it requires a knee extension moment from the musculature to counter it)-LRB--8.4 cm vs. +1.9 cm).

Not exact matches

Overall, the net hip joint moment observed in maximal snatch lifts seems to be much larger than the net knee joint moment, even though Olympic weightlifting is often regarded as being a sport requiring substantial knee extension strength.

Training the jerk may require improving knee extension strength, and the jerk may transfer best to movements requiring substantial net knee joint moments.

Hip extension, knee extension, and ankle plantar - flexion net joint moments increased markedly as side - step distance increased, while hip abduction net joint moments did not alter much at all.

It was originally suggested that hamstring strain injury occurred most commonly during the early stance phase, as this is where both knee flexion and hip extension moments are highest (Mann & Sprague, 1980).

Riemann et al. (2012) also noted that the hip extension moment impulse increased more with increasing load than either ankle or knee joint moment impulses.

Riemann et al. (2012) measured hip extension moment impulses during lunges with different loads and found that increasing load led to increased ankle and hip joint moment impulses but not increased knee joint moment impulse.

It may be the case that the movement pattern can be performed in either a hip - dominant or a knee - dominant way and that greater inclination of the trunk leads to greater hip extension moments (Yoshioka et al. 2007).

Moreover, Lloyd and Buchanan (2001) noted that the gracilis does possess a muscle moment arm that is supportive of knee valgus moments during knee extension movements.

However, the effect of altering hip and knee angles on hip extension moment is substantial.

Later similar research confirmed this, as the increases in hip extension net joint moments with increasing running speed were found to be greater than the increases in knee extension net joint moments, or work done (Simpson & Bates, 1990; Belli et al. 2001; Kuitunen et al. 2002; Schache et al. 2011; 2014; 2015).

It is expected that performing deadlifts with the same absolute load would produce greatest EMG amplitude in the gluteus maximus when deadlifts are pulled from the lower starting points because external hip extension moment arm lengths and hip extension moments are greatest at lift - off in comparison with knee - passing and lock - out (Escamilla et al. 2000; Escamilla et al. 2002).