Using eccentric - only
knee extension training, Guilhem et al. (2013) assessed the effect of constant load and isokinetic external load types on joint - angle specific changes in torque and EMG amplitude.
In one study, Remaud et al. (2010) assessed joint angle - specific changes in maximum voluntary isometric contraction (MVIC) torque and in neural drive after isotonic and isokinetic types of external load, using
knee extension training.
Not exact matches
The hamstrings cross two joints — the
knee joint and the hip joint — so they need to be
trained with the help of exercises that target the
knee flexion function and the hip
extension function of the hamstring muscle separately.
The most important function of the hams is hip
extension, which as you can guess, is vital for explosiveness, sprinting, jumping and overall pelvic mobility, but they also play an important role in stabilizing the
knee joint, so it's easy to understand how a pair weak, underdeveloped hams will diminish the effectiveness of your leg
training, make you look like a novice and leave you at risk for imbalance and injury.
This exercise
trains the hamstrings» two functions simultaneously — hip
extension and
knee flexion — like few other exercises can.
It
trains a lot of muscle groups at the same time,
trains movement patterns that are heavily relied upon in rugby (hip and
knee extension + a ton torso stability), and it can be heavily loaded, which lends itself to strength development.
Training the jerk may require improving
knee extension strength, and the jerk may transfer best to movements requiring substantial net
knee joint moments.
When I use the Power Snatch in
training my athletes, my goal is to make them more powerful for their sport and also to teach and
train a powerful triple
extension (
extension of hip,
knees, and ankles).
Sleds are an excellent tool to
train athletic hip
extension without subjecting your
knees to insane joint stress.
Moreover, supplementation with BA for 4 — 10 weeks has been shown to increase
knee extension torque by up to 6 % [143], improve workload and time to fatigue during high intensity cardio [144 — 148], improve muscle resistance to fatigue during strength
training [149], increase lean mass by approximately 1 kg [147] and significantly reduce perceptions of fatigue [150].
A special variation often used in track & field also uses the
extension of the ankle at the end of the ascent and therefore
trains, the
extension of the hip,
knee and ankle (the triple
extension).
Looking at the movement of the squat, it
trains the flexion and
extension of the hip and
knees.
As a group, the hamstrings can therefore be
trained by exercises that involve either hip
extension or
knee flexion.
In a study on 46 subjects, individuals using UC - II ® in combination with a
training protocol significantly increased their range of motion on
knee extensions compared to subjects using a placebo (81 vs 74 degrees).
1In a study on 46 subjects, individuals using a core ingredient in Six Star ® Joint & Muscle Recovery in combination with a
training protocol significantly increased their range of motion on
knee extensions compared to subjects using a placebo (81 vs. 74 degrees).
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.
Hamstrings energy absorption can be enhanced by eccentric - only or accentuated eccentric
training for
knee flexion (flywheel leg curl or Nordic curl) or hip
extension (single - leg back
extension).
Test of transfer (long - term): Strength
training that targets the hip extensors close to full
extension (such as with the hip thrust), and the
knee extensors at around 40 degrees from full
extension (such as with the quarter squat), may well transfer better to sprinting than strength
training that targets the hip and
knee extensors at other joint angles.
Training to increase the strength and size of the gluteus maximus may be better performed with movements that limit
knee extension (e.g. hip thrusts and back
extensions) compared to with movements that involve substantial
knee extension (squats and step ups).
Firstly, since most compound resistance
training exercises (e.g. squats) involve combined hip and
knee extension, this indicates that maximum gluteus maximus development may be difficult with traditional exercises.