flexion exstention
Leg Curl
yes it is, when holding a weight your arm is extended/ extension, when performing a bicep curl your arm becomes contracted which mean flexion. hope that this helped!! :)
A concentric movement would be flexing the elbow and curling a dumbbell towards the shoulder, an eccentric contraction would be the opposite movement ie bringing the dumbbell back down towards the thigh.
The optimal foot position for performing a leg curl exercise is to keep your toes pointed up towards your shins. This helps to target the hamstring muscles effectively and reduce strain on the knee joint.
Some effective alternatives for hamstring curl exercises include deadlifts, glute-ham raises, Romanian deadlifts, and stability ball leg curls. These exercises target the hamstring muscles and can help improve strength and flexibility in the area.
To see eccentric contraction, look at the biceps curl with flexion around the elbow. As you lower a weight, you are working against resistance, letting the joint angle increase to lower that object under your control.The opposite is the concentric contraction were the arm is flexed upward to decrease the angle at the elbow.
The proper form for a bicep curl concentric movement involves slowly lifting the weight up towards your shoulders while keeping your elbows close to your body and not swinging the weight.
Hamstring - Semimembraneous
To effectively perform a hamstring curl exercise, lie face down on a leg curl machine with your legs extended. Bend your knees to lift the weight by contracting your hamstrings, then slowly lower the weight back down. Focus on controlled movements and proper form to target and strengthen your hamstrings.
The leg curl whether standing or sitting works the hamstring muscles, biceps femoris, which are on the back of the thigh.
=1. Throwing a ball in a football match - this would be a concentric contraction because when bringing the ball behind the head your biceps do the concentric contraction. This is because the two ends of the bicep come closer to each other when doing the action. == ==2. pomallhorses in gymnastic - this is a isometric contraction because the biceps and triceps when doing this the ends of the muscle do not come closer of get further away form each other they stay the same. == ==3. Kicking a ball in rugby - this is an concentric contraction because the ends of the hamstring get further away when doing this action therefore it is a concentric contractions.== ==4. Sit ups - when doing sit ups your abdominals get closer when you sit up form the floor there for this is a concentric contraction.=
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