CSCS Daily Practice Question #145
The Frank-Starling mechanism explains why aerobic exercise increases stroke volume. Which physiological principle underlies this mechanism?
A. increased venous return stretches myocardial fibers, resulting in a more forceful contraction and greater systolic ejection
B. sympathetic stimulation decreases the contractility of the heart during exercise
C. aerobic training reduces the elasticity of the ventricular walls, allowing greater filling
Answer in the poll, then explain your rationale below in the comments! I'll follow up with my breakdown of the question after enough people have responded.
From Chapter 6: Adaptations to Aerobic Endurance Training Programs
DCO Code: 1.E2
NOTE: Image is for illustration purposes, not needed to answer the question.
A. increased venous return stretches myocardial fibers, resulting in a more forceful contraction and greater systolic ejection
B. sympathetic stimulation decreases the contractility of the heart during exercise
C. aerobic training reduces the elasticity of the ventricular walls, allowing greater filling
8 votes
1
3 comments
CSCS Daily Practice Question #145
skool.com/cscs-accelerator-community
Pass the CSCS & CPSS and launch your strength and conditioning career. Study smarter and get certified with expert mentorship, quizzes, and lectures.
Leaderboard (30-day)
1
+12
2
+3
3
+3
4
+2
5
+2
Powered by