The spring-mass model and the energy cost of treadmill running
The spring-mass model and the energy cost of treadmill running
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DOI：
10.1007/s004210050330
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发表时间：
1998-02-01
期刊：
影响因子：
--
通讯作者：
Lacour, JR
中科院分区：
文献类型：
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作者：
Dalleau, G;Belli, A;Lacour, JR
在跑步过程中，通过使用由弹簧（腿）和质量（体重）组成的振荡系统对跑步者进行建模来研究支撑腿的行为。该模型适用于 8 名中长跑运动员，他们在水平跑步机上跑步，速度相当于其最大有氧速度的 90% [平均 5.10 (SD 0.33) m.s(-1)]。他们的跑步能量成本 (C-r) 是通过测量 O-2 消耗量来确定的。双腿的功、刚度和共振频率是根据运动臂进行的测量计算得出的。 C-r 与刚度（P < 0.05，r = -0.80）以及为产生最高正功的腿计算的谐振频率和步进频率之间的绝对差（P < 0.05，r = 0.79）显着相关。在分析来自另一条腿的数据时，没有获得这些显着关系，可能是因为观察到腿之间的工作不对称。结论是，弹簧质量模型是进一步了解 C-r 个体间差异背后机制的好方法。
During running, the behaviour of the support leg was studied by modelling the runner using an oscillating system composed of a spring (the leg) and of a mass (the body mass). This model was applied to eight middle-distance runners running on a level treadmill at a velocity corresponding to 90% of their maximal aerobic velocity [mean 5.10 (SD 0.33) m.s(-1)]. Their energy cost of running (C-r), was determined from the measurement of O-2 consumption. The work, the stiffness and the resonant frequency of both legs were computed from measurements performed with a kinematic arm. The C-r was significantly related to the stiffness (P < 0.05, r = -0.80) and the absolute difference between the resonant frequency and the step frequency (P < 0.05, r = 0.79) computed for the leg producing the highest positive work. Neither of these significant relationships were obtained when analysing data from the other leg probably because of the work asymmetry observed between legs. It was concluded that the spring-mass model is a good approach further to understand mechanisms underlying the interindividual differences in C-r.