Non-linear relations between selected anthropological predictors and psycho-physiological exercise-responses.

In this paper, some very useful non-linear-relation procedures are actualized. The authors have defined the characteristic correlations between a set of anthropological characteristics (14 anthropometric and 14 motor-endurance status variables) and a set of psycho-physiological exercise-responses during the hi-lo and during the step aerobic dance training (heart rate, lactate concentration and rating of the perceived exertion). 60 healthy females served as the sample of subjects (mean age 21 +/- 1.4 years). The experiment consisted of two parts. In the first one, the linear correlations between the two sets of the variables were established. In the second part, non-linear (squared) relations, between the variables of the two sets were calculated. Results confirm the statement that the non-linear correlations, in some cases, better determinate the real nature of the relations between the variables, than linear correlation models.