ERIC Number: ED043500
Record Type: RIE
Publication Date: 1970
Reference Count: 0
Human and Mechanical Factors in Ergometry.
Ellis, M. J.; Hubbard, R. P.
Analysis of the human and mechanical factors inherent in ergometry suggest many strategies for the improvement of experiments related to exertion. The resistive principles of gravitation, friction, elasticity, viscosity, magnetism, and inertia used in ergometers impose different restraints on experiments. The suitability of different resistive principles to differing experimental situations are discussed. The mechanical concept of work has led to confusion in the quantification of exertion, and units of impulse are suggested as preferable when irreversible transformations of chemical energy in human muscle are considered. The interaction of the subject's structure and the mechanics of the resistive devices requires the equation of subjects geometrically in both cross-sectional studies and within-subject comparisons. The differential rates of degradation of physiological and psychological adaptation (skill) over time allow the disentangling of the two sets of adaptations resulting simultaneously from practice. (EB)
Publication Type: N/A
Education Level: N/A
Sponsor: Illinois State Dept. of Mental Health and Developmental Disabilities, Springfield.; National Inst. of Mental Health (DHEW), Bethesda, MD.
Authoring Institution: Illinois Univ., Urbana. Children's Research Center.