Morteza Shahbazi Moghaddam
Physics Department of Tehran University, Iran
Ross H. Sanders
Faculty of Education
Edinburgh University, UK
ABSTRACT
A new mathematical mode for studying hydrodynamic force was developed. The purpose of this study was to present a simple, inexpensive, reliable and less complicated methods. In order to verify the proposed model, 5 male recreational swimmers ranging in age from 20 to 25 years and in mass from 71 to 82 kg have been served in our study. They were requested to swim a 10-meter distance as fast as they could and three to five trials with enough rest in between. They have also been instructed to glide at end of 10m swim, by whistling, until still position. The time of 10m swim and the glided distance were measured with reasonable precision (10-2 Sec 10-2 m, respectively). One of the elite subjects was requested to perform swimming with different speeds in order to achieve different characteristic curves as model. The data collected were then used in proposed formulae in different approaches for achieving velocity, acceleration, propulsive or resistive forces of the subjects, The results obtained agree well with the results obtained by other researchers with complicated and expensive systems.
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How to cite this article
Morteza Shahbazi Moghaddam and Ross H. Sanders, 2002. Kinematical Approaches for Hydrodynamic Force Assessments. Journal of Applied Sciences, 2: 895-902.
DOI: 10.3923/jas.2002.895.902
URL: https://scialert.net/abstract/?doi=jas.2002.895.902
DOI: 10.3923/jas.2002.895.902
URL: https://scialert.net/abstract/?doi=jas.2002.895.902
REFERENCES
- Costill, D.L., 1966. Use of a swimming ergometer in physiological research. Res. Q., 37: 564-567.
PubMedDirect Link - Di Prampero, P.E., D.R. Pendergast, D.W. Wilson and D.W. Rennie, 1974. Energetics of swimming in man. J. Applied Physiol., 37: 1-5.
Direct Link - Hollander, A.P., G. de Groot, G.J.S. van Ingen, H.M. Toussaint and H. de Best et al., 1986. Measurement of active drag during crawl arm stroke swimming. J. Sports Sci., 4: 21-30.
CrossRefDirect Link - Holmer, I., 1972. Oxygen uptake during swimming in man. J. Applied Physiol., 33: 502-509.
Direct Link - Holmer, I., 1974. Energy cost of arm stroke, leg kick and the whole stroke in competitive swimming styles. Eur. J. Applied Physiol. Occupational Physiol., 33: 105-118.
CrossRefDirect Link - Holmer, I., 1974. Physiology of swimming man. Acta Physiol. Scand. Suppl., 407: 1-55.
PubMedDirect Link - Holmer, I., 1974. Propulsive efficiency of breaststroke and freestyle swimming. Eur. J. Applied Physiol. Occupational Physiol., 33: 95-103.
CrossRefDirect Link - Kolmogorov, S.V. and A. Duplisheva, 1992. Active drag, useful mechanical power output and hydrodynamic force coefficient in different swimming strokes at maximal velocity. J. Biomech., 25: 311-318.
PubMedDirect Link - Miyashita, M., 1974. Method of calculating of mechanical power in swimming the breast stroke. Res. Q., 45: 128-137.
Direct Link - Mosterd, W.L. and J.J. Ongbloed, 1964. Analysis of the stroke of highly trained swimmers. Eur. J. Applied Physiol. Occupational Physiol., 20: 288-293.
CrossRefDirect Link - Toussaint, H.M., 1990. Differences in propelling efficiency between competetive swimmers and triathlon swimmers. Med. Sci. Sports Exercise, 22: 409-415.
PubMedDirect Link - Toussaint, H.M., G. de Groot, H.H.C.M. Savelberg, K. Vervoorn, A.P. Hollander and G.J.S. van Ingen, 1988. Active drag related to velocity in male and female swimmers. J. Biomech., 21: 435-438.
PubMedDirect Link