Exercise devices – Involving user translation or physical simulation thereof – Alpine or towed skiing
Patent
1995-09-12
1997-11-25
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Alpine or towed skiing
434253, 482 9, A63B 2200, A63B 7100
Patent
active
056905912
ABSTRACT:
A ski training apparatus includes footboards a movable portion, an apparatus body, a braking section, a movement estimating section, a braking control section, and a braking section. The movable portion supports the footboards to allow them to rotate, and displaces the footboards in accordance with ski-sliding movement. The apparatus body supports the movable portion to allow it to swing. The measuring section measures the loads of the feet of a trainee on the footboards to output load information, while measuring the displacement amount of the movable portion and the rotational angles of the footboards to output displacement information. The movement estimating section estimates a sliding velocity, the position of the trainee on a slope, and an edging strength representing the magnitude of a reactive force received from a snowy surface and corresponding to the load of the trainee on the snowy surface on the basis of the load information, the displacement information, and geographical information, and outputs movement information. The braking control section calculates a braking amount from the pieces of above information to output braking information. The braking section applies a braking force to the movable portion in accordance with the braking information.
REFERENCES:
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Owner's Manual of Pro Skifit S-830 manufactured by Tunturi, Finland, Apr. 1991.
"The effect of manipulating knowledge of results on the learning of slalom-type ski movements" by B.P.L.M. Den Brinker et al, `Ergonomics`, 1986, vol. 29, No. 1,31-40.
Tanahashi, "Mechanism of ski-sliding--Effects of Material and Vibration Friction", Jour. JSME, vol. 95, No. 888, pp. 1001-1004, Nov. 1992.
Fukuzumi Shin'ichi
Kenmochi Akihisa
Crow Stephen R.
NEC Corporation
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