A third group simply continued their usual training program. Thus, we comparatively investigated the effects of strength training exercises with alternating unilateral execution and their transfer effects to sprint and endurance cycling performance.Methods20 trained endurance athletes were either assigned (strata: age, sex, VO2max and training volume) to an alternating unilateral or simultaneous bilateral training group, which completed 10 weeks of volume-load matched heavy strength training (leg press, -extension and -curls 4 x 4-10 RM) in addition to usual endurance training. However, there is a lack of research regarding the potential for modifying exercise modality in strength training to improve endurance performance. For example, a superior transfer effect to improve unilateral jump performance was found for unilateral strength and plyometric compared to bilateral training. Thereby, strength training exercises reflecting similar mechanical specificity to the sports-specific movements have been reported to elicit higher sports performance gains. (2005)Ībstract = "IntroductionAdequate strength performance and training concepts are considered crucial issues within endurance sports. The tendency towards favourable effects of the unilateral strength training compared to bilateral training mode to acceleration within sprint testing needs to be confirmed in future research in both endurance and sprint cyclists in larger samples and over longer time frames.ġ. This pilot trial underpins benefits of maximal strength training independent of its training modality for time trial performance and underlines risks of decreases in muscular power by performing long-term submaximal endurance training only. Meaningful but statistically insignificant improvements in favour of UL were observed for TTP and AI. 05) in BL significantly improved after training period, while no significant changes occurred in UL. PPO and MPO (5% and 3%, respectively, p <. Significant deteriorations in sprint abilities were detected for CON (PPO: -6%, TTP: 25% and AI: -15%, p <. 05), whilst no significant change was found for CON. T lim improved in both intervention groups (UL: 67%, BL: 43%, p <. Maximal strength indices notably increased in both the BL and UL training group (~31%, p <. Furthermore, measurements of maximal uni- and bilateral leg strength were carried out during voluntary isometric contraction. A third group simply continued their usual training program.īefore and after the intervention period, power output at lactate thresholds (W LT1 and W LT2), cycling economy (CE), peak and mean power output (PPO and MPO), time to PPO (TTP), and acceleration index (AI: PPO/TTP) during 15s-sprint test, as well as maximal aerobic power output (W max), maximal oxygen uptake (VO 2max) and time to exhaustion (T lim) at 105% of W LT2 were determined. Thus, we comparatively investigated the effects of strength training exercises with alternating unilateral execution and their transfer effects to sprint and endurance cycling performance.Ģ0 trained endurance athletes were either assigned (strata: age, sex, VO 2max and training volume) to an alternating unilateral or simultaneous bilateral training group, which completed 10 weeks of volume-load matched heavy strength training (leg press, -extension and -curls 4 x 4-10 RM) in addition to usual endurance training. Adequate strength performance and training concepts are considered crucial issues within endurance sports.
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