Ericson M O, Bratt A, Nisell R, Németh G, Ekholm J
Scand J Rehabil Med. 1986;18(4):165-72.
The aim of the study was to calculate the magnitudes of moments of force acting about the bilateral hip and knee joint axes during ergometer cycling. Six healthy subjects pedalled a weight-braked bicycle ergometer at different workloads, pedalling rates, saddle heights and pedal foot position. During cycling at 120 Watts, 60 revolutions per minute with mid-saddle height and anterior pedal foot position, the mean peak flexing and extending hip load moments were 34.3 and 8.9 Nm, respectively. Mean peak flexing knee load moments was 28.8 Nm and extending moment was 11.9 Nm. Hip load moments were significantly increased by increasing the ergometer workload or pedalling rate. For knee load moments, workload was the most important factor. The flexing knee load moment did not change with changes in pedalling rate. Different saddle heights or pedal food positions had a slight but not always statistically significant influence on the hip and knee joint loads. The maximum hip and knee joint load moments induced during cycling were small compared with those obtained during other exercises or normal activities such as level walking, stair climbing, and lifting.
该研究的目的是计算在测力计骑行过程中作用于双侧髋关节和膝关节轴的力矩大小。六名健康受试者在不同的工作量、蹬踏速率、鞍座高度和踏板脚位置下蹬骑重量制动的自行车测力计。在以120瓦、每分钟60转、鞍座高度适中且踏板脚位于前方的情况下骑行时，平均峰值髋关节屈曲和伸展负荷力矩分别为34.3牛米和8.9牛米。平均峰值膝关节屈曲负荷力矩为28.8牛米，伸展力矩为11.9牛米。通过增加测力计工作量或蹬踏速率，髋关节负荷力矩显著增加。对于膝关节负荷力矩，工作量是最重要的因素。膝关节屈曲负荷力矩不会随蹬踏速率的变化而改变。不同的鞍座高度或踏板脚位置对髋关节和膝关节负荷有轻微影响，但并非总是具有统计学意义。与在其他运动或正常活动（如平地行走、爬楼梯和举重）中获得的力矩相比，骑行过程中诱导的最大髋关节和膝关节负荷力矩较小。
