D. Winter data compared to factors for weight support (50% BWS at 3kmh⁻¹)^*

Factors	r	r2
Factor 1	0.64	0.42
Factor 2	0.94	0.88
Factor 3	0.81	0.66
Factor 4	0.86	0.74
Factor 5	0.59	0.35
Mean	0.81	0.66

^*Data phase shifted for best phase alignment.