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Hiking strap force decreases during sustained upwind sailing
R Buchardt1, J Bay1, J Bojsen-Møller2
1a Department of Nutrition, Exercise and Sport , University of Copenhagen , Copenhagen , Denmark.
European Journal of Sport Science
|January 1, 2017
Summary
Sailing upwind above 12 knots causes fatigue, reducing hiking strap force but not knee extensor strength. Maximal hiking force correlates with better sailing performance, indicating its importance for competitive sailors.
Area of Science:
- Sports Science
- Physiology
- Biomechanics
Background:
- Upwind sailing in high winds is physically demanding.
- Fatigue in athletes can impair performance and is often studied through muscle force measurements.
Purpose of the Study:
- To evaluate if sailing upwind above 12 knots causes fatigue.
- To determine if fatigue manifests as reduced hiking strap force or knee extensor maximal voluntary contraction (MVC).
- To investigate the relationship between maximal exerted hiking force (hMVC) and sailing performance.
Main Methods:
- 12 national level athletes sailed upwind for 2x10 min.
- Hiking strap forces were continuously measured.
- Knee extensor MVC was measured before, between, and after sailing.
- hMVC was measured using a dry-land hiking bench and correlated with national championship results.
Main Results:
- Hiking strap force significantly decreased during sailing periods (P < .001).
- Knee extensor MVC remained consistent before, between, and after sailing.
- A significant positive correlation (r² = 0.619, P < .01) was found between hMVC and regatta results.
Conclusions:
- Upwind sailing above 12 knots induces sailing-specific fatigue, evident in reduced hiking strap force.
- Knee extensor MVC is not significantly compromised shortly after ceasing hiking.
- Maximal hiking force is a key determinant of competitive sailing performance.
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