Background: Maximal force-velocity (F/v) profiles for track cyclists are commonly derived
from ergometer sprints using an isovelocity or isoinertial approach. Previously, an attempt was made
to derive maximal F/v profiles from a single maximal 65-m sprint on the cycling track. Hypothesising
that this approach may not accurately reflect the fatigue-free F/v profile, we propose an alternative
procedure and compare it to the previous method. Moreover, we test for the impact of gear ratio
on diagnostic results. Methods: Twelve elite track cyclists completed a high-cadence low-resistance
pedalling test on a freestanding roller (motoric test) and two series of three maximal 65-m sprints
on a cycling track with different gear ratios. F/v profiles were calculated based on the measured
crank force and cadence either during the first 6–7 revolutions (≤6 s) on the track (model I) or
were derived from the first 3–4 revolutions (≤3 s) on the track combined with 1 or 2 fatigue-free
cycles at cadences above 160 rpm from the motoric test (model II). Results: Although both models
exhibit high-to-excellent linearity between force and velocity, the extrapolated isometric force was
higher (1507.51 ± 257.60 N and 1384.35 ± 276.84 N; p < 0.002; d = 2.555) and the slope steeper
(−6.78 ± 1.17 and −5.24 ± 1.11; p < 0.003, d = −2.401) with model I. An ICC of 1.00 indicates
excellent model consistency when comparing the F/v profiles (model II) derived from the different
geared sprints. Conclusions: Assuring fatigue-free measurements and including high-cadence data
points in the calculations provide valid maximal F/v and P/v profiles from a single acceleration-sprint
independent of gear ratio
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:88420 |
| Date | 04 December 2023 |
| Creators | Katharina Dunst, Anna, Hesse, Clemens, Ueberschär, Olaf, Holmberg, Hans-Christer |
| Publisher | MDPI |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2075-4663, 10.3390/sports10090130 |
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