Question

In isometric contraction ;-

• A. Tone changed but length same
• B. Length changed but tone same
• C. Length and tone both same
• D. Length and tone both change

Answer 1

The correct option is A Tone changed but length same

Isometric is directly defined as ‘same length’ whereby ‘iso’ means the same and ‘metric’ means ‘length’ when referring to muscles. During isometric contractions, the muscle itself does not change in length while the tension never exceeds the load that must be carried. This means that while the muscle itself does not shorten, the tension will never exceed the opposing force.

Hence, the correct answer is 'Tone changed but length same'.