Skip Navigation LinksHome > January 2011 - Volume 25 - Issue 1 > Relation Between Cycling Exercise Capacity, Fiber-Type Compo...
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e31820238c5
Original Research

Relation Between Cycling Exercise Capacity, Fiber-Type Composition, and Lower Extremity Muscle Strength and Muscle Endurance

Segerström, Åsa B1; Holmbäck, Anna M1; Hansson, Ola2; Elgzyri, Targ2; Eriksson, Karl-Fredrik2; Ringsberg, Karin3; Groop, Leif2; Wollmer, Per4; Thorsson, Ola4

Collapse Box


Segerström, ÅB, Holmbäck, AM, Hansson, O, Elgzyri, T, Eriksson, K-F, Ringsberg, K, Groop, L, Wollmer, P, and Thorsson, O. Relation between cycling exercise capacity, fiber-type composition, and lower extremity muscle strength and muscle endurance. J Strength Cond Res 25(1): 16-22, 2011-The aim of the study was to determine the relation between peak oxygen uptake (V̇o2peak), peak work rate (WRpeak), fiber-type composition, and lower extremity strength and endurance during a maximal incremental cycle test. Thirty-nine healthy sedentary men, aged 30-46, participated in the study. Subjects performed a maximal incremental cycle test and isokinetic knee extension (KE) and flexion (KF) strength and endurance tests at velocities of 60 and 180°·s−1. Muscle biopsies were taken from m. vastus lateralis and analyzed for fiber-type composition. A significant correlation existed between KE strength and V̇o2peak and WRpeak. Also, KF endurance correlated significantly to V̇o2peak and WRpeak. The KE endurance correlated significantly to WRpeak (rp = 0.32, p < 0.05) and almost significantly to V̇o2peak (rp = 0.28, p = 0.06). Stepwise multiple regression analyses showed that KE strength, KF endurance, and the percentage of type I fibers could explain up to 40% of the variation in V̇o2peak and WRpeak. The performance of sedentary subjects in a maximal incremental cycle test is highly affected by knee muscle strength and endurance. Fiber-type composition also contributes but to a smaller extent.

© 2011 National Strength and Conditioning Association



Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.