Results 231 to 240 of about 212,688 (256)
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Optimal running on skis in downhill
Journal of Biomechanics, 1980Abstract The motion in a vertical plane of a skier performing downhill (that is straight running, traverse, passage of bump, gulley, etc.) is considered in order to minimize the time of his descent. It is known for the competition “Kilometro Lanciato”, as an example, that the record results may be calculated beforehand and therefore planned. To solve
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On optimal running downhill on skis
Journal of Biomechanics, 1990In the paper the problem of the minimum time schuss is discussed. The skier is modelled as a point mass moving on the slope. The profile of the slope may be represented by any given function. Initial and final conditions are given. The control function is the aerodynamic drag of the skier's body.
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The actual release-values of ski safety-bindings on ski-runs in Austria
International Journal for Consumer and Product Safety, 1996Abstract Safety-bindings contribute significantly to avoiding ski-injuries and can help keep the number of injuries low. To ensure that the release-mechanism of the bindings functions as required, the bindings must be adjusted to skiing-boots and skis in accordance with the skills and anatomical conditions of the skier.
Christian Boldrino +2 more
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Nordic Skiing: Running the Tracks
2004The term “nordic” may be applied in general to any skiing not done on the groomed slopes of an alpine ski area. Nordic track and crosscountry skiing are usually done on prepared tracks or on designated routes that are used regularly. A nordic course with a relatively wide track is designed for skiers who use the skating technique; grooves set in the ...
David A. Lind, Scott P. Sanders
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2004
To analyze the forces acting on a ski during a traverse, refer to Figs. 4.5(a) and 4.5(b) in Chapter 4, p. 92, which depicts a skier running down an incline at an angle β from a horizontal line on the slope. Figure 4.5(b) illustrates the force diagram for the case illustrated in Fig. 4.5(a).
David A. Lind, Scott P. Sanders
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To analyze the forces acting on a ski during a traverse, refer to Figs. 4.5(a) and 4.5(b) in Chapter 4, p. 92, which depicts a skier running down an incline at an angle β from a horizontal line on the slope. Figure 4.5(b) illustrates the force diagram for the case illustrated in Fig. 4.5(a).
David A. Lind, Scott P. Sanders
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The Effect of Posture on the Running Speed of Skiing
Ergonomics, 1978Abstract These experiments were performed at the Syowa Station in Antarctica (69°00'S, 39° 35'E) where a straight ski course was constructed (length 100m. gradient 12°). The conditions were as follows; wind velocity: 0-0·5ms−1, temperature: − 25°C, snow temperature: −29·5°C.snow density: 0·309 gcm−3.
K, Watanabe, T, Ohtsuki
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Differences Between Treadmill Running and Treadmill Roller Skiing
The Journal of Strength and Conditioning Research, 1996This study compared the physiological responses of 12 top Nordic skiers to treadmill running (TR) and treadmill roller-ski skating (RS). The skiers underwent TR and RS on randomized, separate days to volitional exhaustion. Expired gas parameters and blood lactate measurements were taken during the stepwise protocols. Peak heart rates, JOURNAL/jscr/beta/
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Ski-Running: Its History, Theory, Method, and Technique1
2019This chapter traces the history of the evolution of a skier's motion. In prehistoric times, skis served exclusively to keep from floundering in deep snow with a motion that hardly differed from normal walking or running. The transition of the ski from a primitive plodding apparatus into a sliding type facilitated different methods of walking; some of ...
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Double pole cross-country skiing more like sliding run
Journal of Experimental Biology, 2014Walking on snow is tough, so for centuries people have attached planks to their feet to improve movement across winter landscapes. More recently, cross-country skiing has become a popular sport, with sophisticated equipment that is painstakingly prepared before major competitions ...
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