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Torque and Power-Velocity Relationships in Cycling: Relevance to Track Sprint Performance in World-Class Cyclists
| Content Provider | Scilit |
|---|---|
| Author | Dorel, S. Rambaud, O. Rouffet, D. Bourdin, M. |
| Editor | Hautier, C. A. Praagh, E. Van Lacour, J. -R. |
| Copyright Year | 2005 |
| Description | The aims of the present study were both to describe anthropometrics and cycling power-velocity characteristics in top-level track sprinters, and to test the hypothesis that these variables would represent interesting predictors of the 200 m track sprint cycling performance. Twelve elite cyclists volunteered to perform a torque-velocity test on a calibrated cycle ergometer, after the measurement of their lean leg volume (LLV) and frontal surface area $(A_{p}$), in order to draw torque- and power-velocity relationships, and to evaluate the maximal power $(P_{max}$), and both the optimal pedalling rate $(ƒ_{opt}$) and torque $(T_{opt}$) at which $P_{max}$ is reached. The 200 m performances - i.e. velocity $(V_{200}$) and pedalling rate $(ƒ_{200}$) - were measured during international events (REC) and in the 2002 French Track Cycling Championships (NAT). $P_{max}$, $ƒ_{opt}$, and $T_{opt}$ were respectively 1600 ± 116 W, 129.8 ± 4.7 rpm and 118.5 ± 9.8 N · m. $P_{max}$ was strongly correlated with $T_{opt}$ (p < 0.001), which was correlated with LLV (p < 0.01). $V_{200}$ was related to $P_{max}$ normalized by $A_{p}$ (p ≤ 0.05) and also to $ƒ_{opt}$ (p < 0.01) for REC and NAT. $ƒ_{200}$ (155.2 ± 3, REC; 149 ± 4.3, NAT) were significantly higher than $ƒ_{opt}$ (p < 0.001). These findings demonstrated that, in this population of world-class track cyclists, the optimization of the ratio between $P_{max}$ and $A_{p}$ represents a key factor of 200 m performance. Concerning the major role also played by $ƒ_{opt}$, it is assumed that, considering high values of $ƒ_{200}$, sprinters with a high value of optimal pedalling rate (i.e. lower $ƒ_{200}$ - f$ _{opt}$ difference) could be theoretically in better conditions to maximize their power output during the race and hence performance. |
| Related Links | http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-2004-830493.pdf |
| Ending Page | 746 |
| Page Count | 8 |
| Starting Page | 739 |
| ISSN | 01724622 |
| e-ISSN | 14393964 |
| DOI | 10.1055/s-2004-830493 |
| Journal | International Journal of Sports Medicine |
| Issue Number | 9 |
| Volume Number | 26 |
| Language | English |
| Publisher | Georg Thieme Verlag KG |
| Publisher Date | 2005-01-24 |
| Access Restriction | Open |
| Subject Keyword | Journal: International Journal of Sports Medicine Sport Sciences Elite Sprint Cycling 200 M Flying Start Maximal Power (pmax) Optimal Pedalling Rate (ƒopt) Projected Frontal Area (ap) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science |
