After a brief review of the optical recording methods of movements, the use of gliding cyclograms in biomechanical analysis of work is discussed. The gliding cyclogram method consists in recording of sequent positions of the moving body segments on photographic film which is transported at a constant speed. The very short exposures are provided by a rotating slotted disk which is fixed in front of the lens of the cyclograph. Examples of hammer stroke investigations and study of its efficiency, determination of optimum height for wood splitting block and an activity analysis of flax scutcher are given.
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