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Characterization of Leg Push Forces and Their Relationship to Velocity in On-Water Sprint Kayaking.
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- Klitgaard, Kent K (author)
- Aalborg University, Denmark
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- Rosdahl, Hans (author)
- Gymnastik- och idrottshögskolan,Institutionen för fysiologi, nutrition och biomekanik
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- Brund, Rene B K (author)
- Aalborg University, Denmark
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- (creator_code:org_t)
- 2021-10-13
- 2021
- English.
- In: Sensors. - : MDPI. - 1424-8220. ; 21:20
- Journal article (peer-reviewed)
Abstract
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- The purpose of this work was to describe the leg-muscle-generated push force characteristics in sprint kayak paddlers for females and males on water. Additionally, the relationship between leg pushing force characteristics and velocity was investigated. Twenty-eight paddlers participated in the study. The participants had five minutes of self-chosen warm-up and were asked to paddle at three different velocities, including maximal effort. Left- and right-side leg extension force were collected together with velocity. Linear regression analyses were performed with leg extension force characteristics as independent variables and velocity as the dependent variable. A second linear regression analysis investigated the effect of paddling velocity on different leg extension force characteristics with an explanatory model. The results showed that the leg pushing force elicits a sinus-like pattern, increasing and decreasing throughout the stroke cycle. Impulse over 10 s showed the highest correlation to maximum velocity (r = 0.827, p < 0.01), while a strong co-correlation was observed between the impulse per stroke cycle and mean force (r = 0.910, p < 0.01). The explanatory model results revealed that an increase in paddling velocity is, among other factors, driven by increased leg force. Maximal velocity could predict 68% of the paddlers' velocity within 1 km/h with peak leg force, impulse over 10 s, and stroke rate (p-value < 0.001, adjusted R-squared = 0.8). Sprint kayak paddlers elicit a strong positive relationship between leg pushing forces and velocity. The results confirm that sprint kayakers' cyclic leg movement is a key part of the kayaking technique.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Keyword
- biomechanics
- footrest
- force measurements
- leg forces
- sprint kayak
- Medicin/Teknik
- Medicine/Technology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Brund, Rene B K
- Hansen, John
- de Zee, Mark
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- The Swedish School of Sport and Health Sciences
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