Viljanen T, Viitasalo J T, Kujala U M
Physical Fitness Research Unit, Paavo Nurmi Centre, Turku, Finland.
Eur J Appl Physiol Occup Physiol. 1991;63(1):43-7. doi: 10.1007/BF00760799.
A random sample of 778 subjects representing ages 25, 35, 45 and 55 years were studied for the amount of habitual physical activity, their anthropometric structure, vertical jumping height, trunk extension and flexion torques and dynamic endurance fitness of trunk extension and flexion. The proportion of subjects who were habitually physically active did not change systematically with age. The highest number of physically inactive subjects was found in men and women in the 35-year age group. The results in all the tests used to assess the strength characteristics were statistically significant when related to sex (P less than 0.001) and in all, except the relative maximal isometric torque of trunk extension, when related to age (P less than 0.001). Everyday physical activity was related to the variation in vertical jumping height (P less than 0.001), as well to the dynamic endurance fitness (P less than 0.001) of trunk extension and flexion. The decline in vertical jumping height and dynamic endurance fitness of trunk extension and flexion fitness was found to start at earlier ages than that of relative maximal isometric trunk extension and flexion torques. Dynamic endurance fitness of trunk flexion showed a more pronounced decline with age than trunk extension fitness.
对778名年龄分别为25岁、35岁、45岁和55岁的受试者进行了随机抽样研究，以了解他们的习惯性身体活动量、人体测量结构、垂直跳跃高度、躯干伸展和屈曲扭矩以及躯干伸展和屈曲的动态耐力。习惯性进行身体活动的受试者比例并未随年龄系统性变化。在35岁年龄组的男性和女性中，身体不活动的受试者数量最多。在用于评估力量特征的所有测试中，与性别相关时结果具有统计学意义（P小于0.001），并且除了躯干伸展的相对最大等长扭矩外，与年龄相关时结果也具有统计学意义（P小于0.001）。日常身体活动与垂直跳跃高度的变化相关（P小于0.001），也与躯干伸展和屈曲的动态耐力相关（P小于0.001）。研究发现，垂直跳跃高度以及躯干伸展和屈曲的动态耐力的下降开始年龄早于相对最大等长躯干伸展和屈曲扭矩。与躯干伸展耐力相比，躯干屈曲的动态耐力随年龄下降更为明显。
