Jevens D J, Hauptman J G, DeCamp C E, Budsberg S C, Soutas-Little R W
College of Veterinary Medicine, Michigan State University, East Lansing 48824.
Am J Vet Res. 1993 Apr;54(4):612-5.
Coefficients of variation were calculated for peak vertical force and for vertical, cranial, and caudal impulses recorded from the left forelimb and left hind limb of 5 dogs that were trotted across a force plate 5 times by 5 handlers. To determine the percentages of variance attributable to dogs, handlers, and trial repetitions, data recorded for each force measurement were analyzed according to a two-factor ANOVA. Coefficients of variation for peak vertical forces and for vertical impulses varied between 5.8 and 8.5%. Coefficients of variation for the forelimb cranial and caudal impulses and for the hind limb cranial and caudal impulses were 26.4 and 30.5%, and 63.0 and 25.9%, respectively. The percentage of the total variance attributable to dogs and to trial repetitions ranged from 14 to 69% and from 29 to 85%, respectively, depending on the force or impulse evaluated. The percentage of variance attributable to handlers varied between 0 and 7%. The trivial amount of variation attributable to handlers indicated that multiple handlers may be used in experiments without an appreciable influence on the results.
计算了5只狗的左前肢和左后肢在5名训练员的带领下5次走过测力板时记录的峰值垂直力以及垂直、头向和尾向冲量的变异系数。为了确定狗、训练员和试验重复所导致的方差百分比，对每次力测量记录的数据进行了双因素方差分析。峰值垂直力和垂直冲量的变异系数在5.8%至8.5%之间。前肢头向和尾向冲量以及后肢头向和尾向冲量的变异系数分别为26.4%和30.5%，以及63.0%和25.9%。根据所评估的力或冲量不同，狗和试验重复所导致的总方差百分比分别在14%至69%和29%至85%之间。训练员所导致的方差百分比在0%至7%之间。训练员所导致的变异量微不足道，这表明在实验中可以使用多名训练员，而不会对结果产生明显影响。
