Development of a new exercise test for children
Development of a new exercise test for children
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开发一种新的儿童运动测试
DOI:
10.1007/bf02448940
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发表时间:
1985
影响因子:
3.2
通讯作者:
M. Osano
中科院分区:
文献类型:
--
作者:
T. Tamura;K. Nakajima;T. Togawa;R. Wakabayashi;M. Osano
EXERCISE tests in children have been applied not only to a variety of clinical problems but also to the estimation of physical capacity. However, few studies have applied a standardised exercise test in the physiological evaluation and clinical application of preschool children. Because of the wide acceptance and popularity of the treadmill, ergometer and Master two-step test for adults, these tests were also applied to studies of children. However, the children sometimes became frightened, reluctant and unco-operative when these tests were performed. The treadmill exercise test has been used in clinical studies of children as young as 4-5 years (CUMMING et al., 1978; ROZANSKI et al., 1979). The treadmill test was reliable but expensive and difficult to set up for general medical examinations. Therefore, we have developed a test which is simple, reliable and easy to accept for children. Younger children are actively engaged in vertical jumping. Many prior experiences and opportunities with vertical jumping have supported the present study. BHATTACHARYA et al.(1980) and WoN~ et al.(1981) suggested that the relationship between acceleration and oxygen uptake had a high degree of correlation. Thus in the present study the total positive acceleration of the body in the head-to-foot axis during vertical jumping was measured and the time integral of acceleration was defined as an index of the exercise test. The main purpose of the present investigation was to develop a simple apparatus and to study the reliability and validity of the new jumping test. the energy required to accelerate and decelerate the body on and off the ground. The acceleration was taken as a measure of the oxygen uptake. In an accelographic study, WON6 et al.(1981) concluded that the time integral of the absolute vertical acceleration of the trunk estimated the degree of oxygen uptake. However., in vertical jumping there was no muscle contraction during flight, and then we assumed that the positive acceleration was highly correlated with the oxygen uptake. The positive acceleration was recorded as shown as a shaded area in Fig. 1. Then a device which recorded and analysed the positive acceleration was designed.The circuit for the physical activity rate meter is shown in Fig. 2. The acceleration of the back was measured with a strain gauge accelerometer. After amplification the output was connected to the device which measured physical activity rate. The input signal was rectified (061 on the left)