Eccentric contraction occurs when the muscle lengthens while producing tension, such as the quadriceps while running downhill.
Eccentric contraction: This type of contraction occurs when the muscle lengthens while producing tension. An example is the quadriceps lengthening while running downhill to control your descent.
An eccentric contraction is the correct option when considering the scenario of the quadriceps increasing in length while producing tension while running downhill.
Muscle tension: this is the tension created within the muscle fibers, which can remain constant in an isotonic contraction despite changes in muscle length.
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