TYPES OF MUSCLE CONTRACTION (Biomechanics Core concepts)Physiotherapy Tutorials
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summary of the video with the time for reference:

1.Types of muscle contraction 0:37
Isometric
Isotonic
concentric
eccentric
isokinetic

2.Isometric 1:07
length remains same but force is produced
Holding a particular position

3.Concentric 1:52
Length reduces with force production
tendon attachments come close to each other
coming up from squat
pushing yourself up

4.Eccentric 2:55
Length increases with force production
tendon attachments move away from each other
lowering yourself down in squat or pushup

5.Isokinetic contraction 3:40
contraction occurs at same speed