Summary
Simple and choice knee extension response time was measured on four groups of subjects: Old Active, Old Inactive, Young Active, and Young Inactive. Each response measure consisted of total reaction time plus movement time. Total reaction time was further fractionated into premotor time, which represents the central processing component, and motor time, which represents the peripheral muscular component. All simple and choice fractionated response components demonstrated an age-related lengthening with motor time showing the least amount of lengthening. Although activity level enhanced the speed of all components in aged subjects, movement time was affected to the greatest extent and motor time was affected the least. It is particularly noteworthy that (1) motor time is so little influenced by age and level of activity and (2) the deterioration in speed of movement with age is almost completely negated in Old Active subjects. The results suggest that a life style of regular physical activity has a beneficial effect on several aspects of performance, especially in regard to speed of movement.
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References
Bellis, C. J.: Reaction time and chronological age. Proc. Soc. Exp. Biol. Med. 30, 801–803 (1933)
Birren, J. E., Botwinick, J. E.: Age differences in finger, jaw and foot reaction time to auditory stimuli. J. Gerontol. 10, 429–432 (1955)
Botwinick, J. E., Thompson, L. W.: Components of reaction time in relation to age and sex. J. Gen. Psychol. 108, 175–183 (1966)
Botwinick, J. E., Thompson, L. W.: Practice of speeded response in relation to age, sex and set. J. Gerontol. 22, 72–76 (1967)
Botwinick, J. E., Thompson, L. W.: Age differences in reaction time: an artifact? Gerontologist 8, 25–28 (1968)
Brown, W. F.: A method for estimating the number of motor units in thenar muscles and the changes in motor unit count with aging. J. Neurol. Neurosurg. Psychiat. 35, 845–852 (1972)
Campbell, M. J., McComas, A. J., Petito, F.: Physiological changes in ageing muscle. J. Neurol. Neurosurg. Psychiat. 36, 174–182 (1973)
Clarke, H. H., (ed.): Exercise and aging. In: Physical fitness research digest. President's Council on Physical Fitness and Sports. Washington, D.C., April, 1977
Hodgkins, J.: Reaction time and speed of movement in males and females of various ages. Res. Q. Am. Assoc. Health Phys. Educ. 34, 335–343 (1963)
Jennekens, F. G. I., Tomlinson, B. E., Walton, J. N.: Histochemical aspects of five limb muscles in old age: an autopsy study. J. Neurol. Sci. 14, 259–276 (1971)
Koga, Y., Morant, G. M.: On the degree of association between reaction times in the use of different senses. Biometrika 15, 346–372 (1923)
Kroll, W.: Effects of local muscular fatigue due to isotonic and isometric exercise upon fractionated reaction time components. J. Mot. Behav. 5, 81–93 (1973)
Kroll, W., Clarkson, P. M.: Fractionated reflex time, resisted and unresisted fractionated reaction time under normal and fatigue conditions. In: Psychology of Motor behavior and sport (D. M. Landers, R. W. Christina, eds), pp. 106–129. Illinois: Human Kinetics 1977
Lindquist, E. F.: Design and analysis of experiments in psychology and education. Boston: Houghton Mifflin 1956
Morris, A. F.: Effects of fatiguing isometric and isotonic exercise on resisted and unresisted reaction time components. Eur. J. Appl. Physiol. 37, 1–11 (1977)
McComas, A. J., Sica, R. E. P., Upton, A. R. M., Longmire, D., Caccia, M. R.: Physiological estimation of the number and size of motor units in man. In: Control of Posture and Locomotion (R. B. Stein et al., ed.), pp. 55–72. New York: Plenum Press 1973
McNemar, Q.: Psychological statistics. New York: Wiley 1962
Pierson, W. R., Rasch, P. J.: Determination of a representative score for simple reaction and movement time. Percept. Mot. Skills 9, 107–110 (1959)
Rabbitt, P. M. A.: Set and age in a choice-response task. J. Gerontol. 19, 301–306 (1964)
Spirduso, W.: Reaction and movement time as a function of age and physical activity level. J. Gerontol. 30, 435–440 (1975)
Tuttle, W. W., MacEwen, E. M.: A method of determining the length of the femoral nerve and for locating the motor point of the rectus femoris muscle in the intact human body. Anat. Rec. 37, 317–319 (1927)
Weiss, A. D.: The locus of reaction time change with set, motivation and age. J. Gerontol. 20, 60–64 (1965)
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Clarkson, P.M. The effect of age and activity level on simple and choice fractionated response time. Europ. J. Appl. Physiol. 40, 17–25 (1978). https://doi.org/10.1007/BF00420985
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DOI: https://doi.org/10.1007/BF00420985