In a placebo controlled double - blind study of frail elderly patients, treatment with NAC doubled the increase
in knee extensor strength during a 6 - week program of physical exercise and slowed the subsequent decline during a 6 - week follow - up period.
The results were a little unclear because the changes were very small after such a light training program — but the increases in MMSE score were indeed correlated (with p < 0.05) with increases
in knee extensor strength.
Not exact matches
The researchers evaluated the mechanisms by which the tissue obtains energy by burning sugars and fats by the intervention of oxygen during exercise, on the
knee extensors of one leg
in 11 active men.
In a nutshell, the anatomic traits that are associated with a more upright squatting posture include: greater heel elevation, greater ankle dorsiflexion mobility, shorter femur length, longer torso length, wider stance width, more abduction, a higher bar position on the back, greater quadriceps strength and increased intent to target the
knee extensors.
The vastus medialis (vastus internus or teardrop muscle) is an
extensor muscle located medially
in the thigh that extends the
knee.
If you are truly dedicated
in solving the problem, I would suggest 10 - 12 sets of low rep
knee flexion
in the morning, and 8 - 10 sets of high rep hip
extensors exercise
in the afternoon.
Sure enough, the more highly supervised athletes gained significantly more strength
in bench press and
knee extensor exercises.
Knee extensor moment arm lengths are greatest
in the order box > traditional > powerlifting squat styles.
In contrast, knee extensor moments in the back squat increase with increasing relative load and squat depth but reduce with cues to prevent forward movement of the knees over the toes or with greater trunk lea
In contrast,
knee extensor moments
in the back squat increase with increasing relative load and squat depth but reduce with cues to prevent forward movement of the knees over the toes or with greater trunk lea
in the back squat increase with increasing relative load and squat depth but reduce with cues to prevent forward movement of the
knees over the toes or with greater trunk lean.
Among the lower body muscles, the plantar flexors display the highest proportion of type I muscle fibers, and the
knee extensors display the lowest proportion of type I muscle fibers, as shown
in the chart below, which presents the mean of the data from all currently available studies.
Wretenberg et al. (1996) found that peak
knee extensor moments were lower during powerlifting squats than during Olympic weightlifting - style squats, even though the powerlifting squats involved the use of greater absolute loads; Swinton et al. (2012) reported that peak
knee extensor moments were greater
in the box squat variation than
in either the traditional or powerlifting squat variations, but there was no difference between traditional and powerlifting squats.
McLaughlin et al. (1978) similarly noted that peak
knee extensor moments were smaller
in individuals who displayed greater trunk lean and more acute hip angles, which is associated with this type of exercise cue.
Given the equal roles of the hip and
knee extensors in this exercise, it is difficult to identify whether the effects of squat training achieves improvements
in COD ability through increases
in quadriceps or hip
extensor (adductor magnus, gluteus maximus, and hamstrings) muscle size.
Since strength is specific, then: strength training that focuses on the
knee (and hip)
extensors should lead to superior gains
in COD ability than strength training that is more generally applied to the whole lower body.
Since strength is specific, then: strength training for the hip
extensors and
knee extensors with eccentric - only muscle actions or accentuated eccentric loading should lead to superior gains
in COD ability compared to conventional strength training.
Twisting Low Lunge Benefits: Creates space
in thoracic spine; stretches back
extensors, ilia - psoas, thighs Starting on hands and
knees, step one foot between hands.
Net energy absorbed by the
knee (
extensors in initial swing, and flexors
in terminal swing) was also very strongly associated with running speed, and similarly increased substantially with increasing speed.
Mann (1980) observed
in a group of elite sprinters that the best athletes displayed the greatest hip
extensor (and
knee flexor) net joint moments.
Test of transfer (long - term): strength training emphasizing the hip
extensors more than the
knee extensors (e.g. jump squat vs. push press or hip thrust vs. front squat) does lead to greater gains
in sprinting performance compared to exercises that stress the
knee extensors more than the hip
extensors (Loturco et al. 2016; Contreras et al. 2016), and a hamstring - focused strengthening program is additive for sprinting when included alongside normal training (Mendiguchia et al. 2015).
However,
knee external moment arm length is more positive (so a greater
knee extensor moment is needed)
in the hexagonal barbell compared to the straight barbell, and
in the sumo style compared to the conventional deadlift style.
This is because of differences
in external moment arm lengths, which can be either
knee flexor or
knee extensor between different individuals and when using different barbell types.
The patella, or
knee cap, is a small bone buried
in the tendon of the
extensor muscles (the quadriceps muscles) of the thigh.