Your patient has poor upper quarter posture, and you are training the scapular depressors in order to improve thoracic and scapular position for postural control.Against low resistance, the scapular depressors are muscle setting for 60 seconds.What muscle fibers primarily are recruited during this activity?
A)Type I
B)Type IB
C)Type IIA
D)Type IIB

Question

Quizplus · Accepted Answer

Muscle setting against low resistance requires a sustained but low-level contraction, which primarily recruits Type I muscle fibers. These fibers are slow-twitch, fatigue-resistant, and capable of maintaining muscle contractions for extended periods of time without taxing the cardiovascular system. This makes them ideal for postural control and endurance activities, such as scapular depressor training.

Your Patient Has Poor Upper Quarter Posture, and You Are