Discussion
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R) :
Assertion (A) : Muscular power is a measure of contraction speed of muscle.
Reason (R) : Muscular power is determined by the fibre type proportion of the muscle. In context of the above two statements, which one of the following is correct ?
Codes :
Answer: C
Both statements are right. Muscular power is the rate of doing work and so reflects the speed of contraction. It depends on the proportion of fast-twitch to slow-twitch fibres, since fast fibres contract more quickly and give more power.
The choices that reject either statement are wrong. Power equals force times velocity, so a muscle that contracts both strongly and fast has the greatest power, as in jumping and throwing.
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