Not exact matches
Kettlebell swings are
great for developing power in hip and
knee extension just like in a jump.
These selections are
great for athletes to improve their triple
extension (hip,
knee, and ankle) which usually translates directly to their sport, but that may not be a goal for non-athletes.
After the 14 weeks, the creatine group were found to have experienced
greater increases in fat free mass and total body mass, in addition to improvements in isometric
knee extension strength.
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.
Comparing the back squat with
knee extensions, Signorile et al. (1994) found that muscle activity was
greater during back squats than during
knee extensions but Andersen et al. (2006) found the opposite results and Escamilla et al. (1998) found that muscle activity differences depended upon
knee angle.
However, increases in muscle fascicle length are also likely dependent on the mechanical load incurred by the prime mover, as
knee flexion (hamstring only) exercise seems to lead to
greater adaptations in the hamstrings than hip
extension (hamstring, gluteus maximus, and adductor magnus) exercise, even when muscle length at peak contraction is shorter (Bourne et al. 2016).
It is also a
great extension muscle which is used by our
knees.
The split squat displays
greater hip
extension moments, and smaller
knee extension moments than the standard back squat.
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).
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).
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 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.
The split squat appears to display
greater hip
extension moments and smaller
knee extension moments than the standard back squat.
In certain trials of older men and women, training with whole body vibration significantly improved muscle torque and power, and were proportionately
greatest in plantarflexion and to a lesser extent
knee extension, while hip flexion and
extension, and
knee flexion and dorsiflexion measures were unaltered.
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).
They found that hip
extension performed in
knee flexion led to
greater gluteus maximus EMG amplitude than hip
extension performing in
knee extension (23 % vs. 13 % of MVIC).
Similarly, Arokoski et al. (1999) found that the quadruped hip
extension with contra - lateral arm lift produced the
greatest gluteus maximus EMG amplitude, followed by the prone hip
extension with flexed
knee, followed by the horizontal back
extension.
Firstly, the exercise involves combined hip and
knee extension, which is expected to lead to
greater EMG amplitude in the quadriceps and less EMG amplitude in the gluteus maximus (Yamashita, 1988; Kwon et al. 2013).
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).
So exercises that involve less
knee extension (hip thrusts, deadlifts, pull throughs and back
extensions) will tend to produce much
greater hip muscle activation than those that involve more
knee extension (squats, lunges, and leg presses), although there are other factors involved of course!