Before each session, immediately after, 2 hours after and 24 hours after the researchers measured muscle twitch properties, knee extension strength,
knee flexion strength, blood lactate, body fluid pH, creatine kinase, aspartate transaminase, C - reactive protein, heart rate, ratings of perceived exertion and muscle soreness.
(i.e. knee extension strength vs.
knee flexion strength: 60:40 ratio)» (Reference 6, Siff and Verkhoshansky)
Not exact matches
This is a very important muscle group for athletes though, because it performs multiple functions crucial for explosive
strength, such as
knee flexion and hip extension.
They looked at bench press, squat
strength, and
knee extension /
flexion peak torque (ability to overcome resistance).
For this reason, Olympic weightlifters have primary done high bar back squats and front squats to develop
strength in the exact positional alignments needed to transfer over to cleans and snatches (an upright torso with high amounts of
knee flexion).
In fact, front and back squats are more similar than they are different — both require massive amounts of
strength / stability in the hips and core, as well as requisite «access» to hip
flexion,
knee extension, and ankle dorsiflexion — so I really see little need to get all territorial about which one is better.
The elite Olympic weightlifters did display a greater isokinetic concentric
knee flexion torque but the extent to which hamstring
strength is relevant to Olympic weightlifting is unclear.
Here are the key details: Population = 1,755 institutionalised and community - dwelling Spanish people (985 females and 770 males), aged > 65 years Intervention = four different measurements of
strength (grip, shoulder abduction, hip
flexion and
knee extension) using a hand dynamometer, compiled into a composite measure Comparisons = four quartiles of
strength (high, medium - high, medium - low, and low) Outcome = risk ratios for mortality and hospitalisation To combine the four measurements of
strength into one composite measure, the researchers used the following calculation.
Unlike sprinting, this eccentric
strength is likely necessary for the hip extensors and
knee extensors, as the COD maneuver usually involves combined hip
flexion and
knee flexion.
Where exercises display peak hamstrings EMG amplitude at different degrees of
knee flexion, this may imply that they could lead to increases in
strength and hypertrophy in different parts of the hamstring muscles.
Andersen et al. (2015) reported joint angle - specific gains in
strength, whereby squats with free weights produced gains in isometric
strength at both 60 and 90 degrees of
knee flexion, while squats against elastic bands produced gains in isometric
strength only at 60 degrees of
knee flexion.
It is thought that lower hip abduction
strength leads to a reduced ability to control the hip abduction and internal rotation movements of the thigh during
knee flexion.
Isometric muscle
strength was measured by
knee extension, elbow
flexion, and hand grip.