抄録
The investigation was performed on 24 subjects, normal and healthy kindergarten children, for the measurement of Achilles tendon reflex by strain-gauge method. A stochastic deduction was made on the relationships holding between and among the readings. The following results were obtained. (1) The mechanical curves of the reflex were found to be in either of the types G, S and U with G containing the most instances followed by S and U in the order. (2) The average reading for each element of the measurement was: reflex time (s-a interval), 57.45 msec; phase of contraction (a-b interval), 84.53 msec; phase of relaxation (a-d interval), 122.92 msec; duration of contraction (a-d interval), 207.45 msec; and height of contraction, 7.93 mm, respectively. (3) As for the relationships between and among the readings of elements, a minus correlation was found between the reflex time and the height of contraction while a plus correlation was found between the phase of contraction and the duration of contraction, and likewise between the phase of relaxation and the duration of contraction. A plus correlation was found mutually between and among the readings of the elements: reflex time, phase of contraction, phase of relaxation, duration of contraction and height of contraction.
