What type of muscular contraction occurs in the biceps as it shortens when a 'curl' is performed using a free weight? (A) Concentric (B) Eccentric (C) Isokinetic (D) Isometric - HSC - SSCE Personal Development and Physical Education - Question 12 - 2002 - Paper 1

When performing a 'curl' using a free weight, the biceps undergo a contraction where the muscle shortens as it generates force. This type of contraction is called a concentric contraction. During concentric contractions, the muscle fibers actively shorten, enabling the movement against resistance.