Validation of a Biofeedback System for Wheelchair Propulsion Training

Table 5

Results of dynamic testing.

		Test Mass = 1.17 kg		Test Mass = 2.30 kg
Variable	Speed (m/s)	Correlation coefficient	Measured value-actual value	Correlation coefficient	Measured value-actual value
𝐹𝑥 (N)	0.5	0.989	−0.04 ± 1.20	0.998	0.11 ± 1.31
	1.0	0.994	0.31 ± 0.93	0.998	0.83 ± 1.22
	1.5	0.994	0.42 ± 0.92	0.997	0.69 ± 1.36
𝐹𝑦 (N)	0.5	0.988	−0.20 ± 1.32	0.997	−0.28 ± 1.25
	1.0	0.993	−0.60 ± 1.03	0.998	−0.96 ± 1.03
	1.5	0.993	−0.81 ± 1.16	0.995	−0.60 ± 1.55
𝑇𝑧 (Nm)	0.5	0.999	0.13 ± 0.08	0.999	0.14 ± 0.11
	1.0	0.997	0.13 ± 0.17	0.998	0.14 ± 0.26
	1.5	0.986	0.11 ± 0.35	0.998	0.10 ± 0.25

Differences in the values are mean ± 1 standard deviation.