Discussion
Match List-I with List-II and select the correct answer from the codes given below :
| List-I | List-II |
|---|---|
| (1) Passive muscle contraction | (i) Treadmill exercise |
| (2) Active muscle contraction | (ii) Plank hold exercise |
| (3) Isokinetic muscle contraction | (iii) Pull-ups exercise |
Answer: A
The key matches (1) with (ii), (2) with (iii) and (3) with (i), so the answer is 1-ii, 2-iii, 3-i.
The plank hold is a static hold in which the muscles stay tense and do not change length (an isometric contraction), which is the only list-II item that fits the 'passive' (non-moving) contraction. Pull-ups are an active, dynamic exercise in which the muscles shorten and lengthen against body weight. The treadmill is matched to the isokinetic item, the constant-speed type of work.
The other codes each break one of these ideas: 1-i, 2-iii, 3-ii puts the static plank hold against isokinetic work; 1-iii, 2-ii, 3-i calls the pull-up the passive item; and 1-ii, 2-i, 3-iii calls the pull-up isokinetic, although the speed of a pull-up changes freely.
Check on the key: the labels 'passive muscle contraction' and 'isokinetic' for these exercises are the key's own reading and could not be confirmed in a standard reference, but this is the only code that places the plank hold with the static contraction and the pull-up with the active one.
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