An Investigation into the Relation between the Technique of Movement and Overload in Step Aerobics

Table 1

Mean values and standard deviation (SD) of the GRF vector for the instructors and nonprofessionals recorded by the upper and lower Kistler force plate.

Variable	Upper plate—stepping up		Lower plate—stepping down
	Instructors	Nonprofessionals	Instructors	Nonprofessionals
	Mean ± SD	Mean ± SD	Mean ± SD	Mean ± SD
Fy [N]	586.2 ± 56.2	637.3 ± 83.0	934.6 ± 136.8	1015.4 ± 195.3
Relative Fy (BW)	1.0 ± 0.1	1.0 ± 0.1	1.6 ± 0.2	1.6 ± 0.2
Fx [N]	−87.4 ± 23.8	−91.9 ± −22.7	118.3 ± 49.1	145.3 ± 64.7
Relative Fx (BW)	−0.2 ± −0.0	−0.2 ± −0.0	0.21 ± 0.09	0.23 ± 0.01
Fz [N]	−29.26 ± −15.1	−36.60 ± −21.6	26.89–25.3	25.97–33.8
Relative Fz (BW)	−0.05 ± −0.03	−0.06 ± −0.03	0.05 ± 0.04	0.04 ± 0.05

Note: statistically significant difference for ; F_y—maximum for the vGRF component, F_x—maximum for the a-pGRF component, F_z—maximum for the m-lGRF in the absolute [N] and relative values (BW). The significance of differences was only tested for the relative values.