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Eur J Appl Physiol. 2010 Mar;108(5):965-75. doi: 10.1007/s00421-009-1307-z. Epub 2009 Dec 4.

Effect of heavy strength training on thigh muscle cross-sectional area, performance determinants, and performance in well-trained cyclists.

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Lillehammer University College, PB. 952, 2604, Lillehammer, Norway.


The purpose of this study was to investigate the effect of heavy strength training on thigh muscle cross-sectional area (CSA), determinants of cycling performance, and cycling performance in well-trained cyclists. Twenty well-trained cyclists were assigned to either usual endurance training combined with heavy strength training [E + S; n = 11 (male symbol = 11)] or to usual endurance training only [E; n = 9 (male symbol = 7, female symbol = 2)]. The strength training performed by E + S consisted of four lower body exercises [3 x 4-10 repetition maximum (RM)], which were performed twice a week for 12 weeks. Thigh muscle CSA, maximal force in isometric half squat, power output in 30 s Wingate test, maximal oxygen consumption (VO(2max)), power output at 2 mmol l(-1) blood lactate concentration ([la(-)]), and performance, as mean power production, in a 40-min all-out trial were measured before and after the intervention. E + S increased thigh muscle CSA, maximal isometric force, and peak power in the Wingate test more than E. Power output at 2 mmol l(-1) [la(-)] and mean power output in the 40-min all-out trial were improved in E + S (P < 0.05). For E, only performance in the 40-min all-out trial tended to improve (P = 0.057). The two groups showed similar increases in VO(2max) (P < 0.05). In conclusion, adding strength training to usual endurance training improved determinants of cycling performance as well as performance in well-trained cyclists. Of particular note is that the added strength training increased thigh muscle CSA without causing an increase in body mass.

[Indexed for MEDLINE]

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