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Development of aging of muscular strength as a characteristic of ability of emergency evacuation

Japanese Journal of Physical Fitness & Sports Medicine 34(SUPPL): 49-60

Development of aging of muscular strength as a characteristic of ability of emergency evacuation

Development and aging of muscular strength of 1,056 and 460 female subjects [human] in varied ages were studied for the purpose of obtaining basic data necessary for examining the ability of evacuation in emergency. In addition to the conventional measurements of muscular strength such as grip strength, back strength and distance of Sargent jump, new strength measures like horizontal push, horizontal pull and lifting strength which were considered as some part of characteristic of ability of evacuation in emergency were measured by newly developed apparatuses. Back strength showed the largest strength measure among them followed by lifting strength, horizontal pull, horizontal push and grip strength in that order, however ratios of one strength measure to other strength measures were kept almost constant regardless of subjects' ages. Proportions of each measured value to their peak value were calculated and approximated by biquadratic equation the curve of which corresponded to aging curve of ratio to the peak value. Most of the aging curves of ratio to the peak value of different strength measures were found to be similar except for the curve of distance of Sargent jump. The aging curve representing each product of distance of Sargent jump and subject's body weight fairly well agreed with other aging curves as it was. For practical use, application of conventional strength measures, grip strength for example, to the assessment of muscular strength as a characteristic of ability of evacuation in emergency was considered to be significant.

Accession: 005132267

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