The Company of Biologists

Table 5.

Results from regression analyses using stride length, stride frequency or duty factor as dependent variables, and speed as the independent variable

	Stride length^{^†}			Stride frequency
Load	Slope	y-intercept	Slope	y-intercept	Slope	y-intercept
H. garnoti
0	0.24±0.05^***	−1.19±0.02^***	0.76±0.05^***	1.19±0.02^***	−0.13±0.05^**	−0.33±0.01^***
2	0.19±0.04^***	−1.23±0.01^***	0.81±0.04^***	1.23±0.01^***	0.01±0.04	−0.13±0.01^***
100	0.33±0.05^***	−1.21±0.02^***	0.67±0.05^***	1.21±0.02^***	−0.09±0.05	−0.27±0.02^***
150	0.30±0.06^***	−1.24±0.02^***	0.70±0.06^***	1.24±0.02^***	−0.10±0.07	−0.25±0.02^***
200	0.32±0.06^***	−1.25±0.02^***	0.68±0.06^***	1.25±0.02^***	−0.003±0.07	−0.21±0.03^***
G. gekko
0	0.34±0.15^*	−0.84±0.02^***	0.66±0.15^***	0.84±0.02^***	−0.08±0.11	−0.31±0.02^***
100	0.27±0.13^*	−0.95±0.04^***	0.73±0.13^***	0.95±0.04^***	−0.02±0.07	−0.21±0.02^***

	Stride length^{^†}			Stride frequency
Load	Slope	y-intercept	Slope	y-intercept	Slope	y-intercept
H. garnoti
0	0.24±0.05^***	−1.19±0.02^***	0.76±0.05^***	1.19±0.02^***	−0.13±0.05^**	−0.33±0.01^***
2	0.19±0.04^***	−1.23±0.01^***	0.81±0.04^***	1.23±0.01^***	0.01±0.04	−0.13±0.01^***
100	0.33±0.05^***	−1.21±0.02^***	0.67±0.05^***	1.21±0.02^***	−0.09±0.05	−0.27±0.02^***
150	0.30±0.06^***	−1.24±0.02^***	0.70±0.06^***	1.24±0.02^***	−0.10±0.07	−0.25±0.02^***
200	0.32±0.06^***	−1.25±0.02^***	0.68±0.06^***	1.25±0.02^***	−0.003±0.07	−0.21±0.03^***
G. gekko
0	0.34±0.15^*	−0.84±0.02^***	0.66±0.15^***	0.84±0.02^***	−0.08±0.11	−0.31±0.02^***
100	0.27±0.13^*	−0.95±0.04^***	0.73±0.13^***	0.95±0.04^***	−0.02±0.07	−0.21±0.02^***

Asterisks indicate significant relationships between the independent and dependent variables; ^*P<0.05, ^***P<0.0001. Values of stride length (cm), stride frequency (Hz), duty factor and speed (m s⁻¹) were log₁₀-transformed prior to statistical analyses.

†

Values are ±1 s.e.m.

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