Download Cross Country Skiing: Olympic Handbook of Sports Medicine by Heikki Rusko PDF

By Heikki Rusko

The Handbooks of activities medication and technological know-how current simple medical and clinical info in a transparent variety and structure as relating to particular activities occasions drawn from the Olympic summer season and wintry weather video games. every one instruction manual is written through a small group of specialists co-ordinated through an editor who's the world over revered and recognized within the specific recreation task.

Each quantity provides updated details at the easy biology of the game, conditioning ideas, nutrients, and the scientific elements of damage prevention, therapy, and rehabilitation.

This instruction manual will represent the main whole and authoritative resource of knowledge in life as regards the clinical and scientific facets of pass kingdom snowboarding: body structure, nutrients, biomechanics, harm prevention, remedy and care of clinical difficulties, and conditioning for competition.

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The vertical reaction force component affects motion up and down only and does nothing to propel the skier forward. The relative proportions of the horizontal and vertical reaction forces depend on the angle of the resultant reaction force with respect to horizontal or vertical. In Fig. 2 this depends on the pole angle and how inclined it is from vertical. As the pole inclines away from vertical, the horizontal component, the propulsive force, becomes larger while the vertical CCSC02 26/07/2002 34 12:00 PM Page 34 CHAPTER 2 20º angle Resultant poling force Vertical poling force 200 N 188 N 70º angle 68 N propulsive force Fig.

Newton’s laws tell us that the total force in each of the three-dimensional directions will determine the skier’s acceleration in that direction. • Performance is determined by forward motion, hence those components of reaction force in the forward Performance in cross country skiing is determined by the complex interaction of physiology and mechanics. The forces which drive a skier’s motion come with metabolic expenses and limitations which affect the ability to generate and sustain force at ideal levels.

Nummela, A. & Rusko, H. (1999) Explosive-strength training improves 5-km running time by improving running economy and muscle power. Journal of Applied Physiology 86, 1527–1533. , Niittymäki, S. & Viitasalo, J. (1997) Effects of oxygen fraction in inspired air on force production and electromyogram activity during ergometer rowing. European Journal of Applied Physiology 76, 495–503. 31 Rusko, H. (1976) Physical performance characteristics in Finnish athletes. PhD dissertation, University of Jyväskylä, Jyväskylä, Finland.

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