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- Title
Effects of low and high cadence interval training on power output in flat and uphill cycling time-trials.
- Authors
Nimmerichter, Alfred; Eston, Roger; Bachl, Norbert; Williams, Craig
- Abstract
This study tested the effects of low-cadence (60 rev min) uphill (Int) or high-cadence (100 rev min) level-ground (Int) interval training on power output (PO) during 20-min uphill (TT) and flat (TT) time-trials. Eighteen male cyclists ( $$ \dot{V}{\text{O}}_{2\max } $$: 58.6 ± 5.4 mL min kg) were randomly assigned to Int, Int or a control group (Con). The interval training comprised two training sessions per week over 4 weeks, which consisted of six bouts of 5 min at the PO corresponding to the respiratory compensation point (RCP). For the control group, no interval training was conducted. A two-factor ANOVA revealed significant increases on performance measures obtained from a laboratory-graded exercise test (GXT) ( P: 2.8 ± 3.0%; p < 0.01; PO and $$ \dot{V}{\text{O}}_{2} $$ at RCP: 3.6 ± 6.3% and 4.7 ± 8.2%, respectively; p < 0.05; and $$ \dot{V}{\text{O}}_{2} $$ at ventilatory threshold: 4.9 ± 5.6%; p < 0.01), with no significant group effects. Significant interactions between group and uphill and flat time-trial, pre- versus post-training on PO were observed ( p < 0.05). Int increased PO during both TT (4.4 ± 5.3%) and TT (1.5 ± 4.5%). The changes were −1.3 ± 3.6, 2.6 ± 6.0% for Int and 4.0 ± 4.6%, −3.5 ± 5.4% for Con during TT and TT, respectively. PO was significantly higher during TT than TT (4.4 ± 6.0; 6.3 ± 5.6%; pre and post-training, respectively; p < 0.001). These findings suggest that higher forces during the low-cadence intervals are potentially beneficial to improve performance. In contrast to the GXT, the time-trials are ecologically valid to detect specific performance adaptations.
- Subjects
PHYSIOLOGICAL aspects of cycling; EXERCISE physiology; PHYSIOLOGICAL aspects of aerobic exercises; HEART rate monitoring; PHYSICAL fitness
- Publication
European Journal of Applied Physiology, 2012, Vol 112, Issue 1, p69
- ISSN
1439-6319
- Publication type
Article
- DOI
10.1007/s00421-011-1957-5