Table 2.

The effects of Jumping experience (JE) and Additional weight (AW) treatments on the adjustments of (a) Angular leg speed, (b) Take-off angle, and (c) Take-off velocity of the water striders between First and Second jumps.

Variables		Females		Males
Dependent	Independent	Estimate ± SD	95% CI	Estimate ± SD	95% CI
(a) Angular leg speed difference	Intercept	4.92 ± 3.77	− 2.73, 12.06	− 2.45 ± 4.86	− 12.28, 6.82
	AW	− 4.82 ± 11.68	− 28.43, 17.75	0.99 ± 8.68	− 16.71, 17.44
	JE	− 17.60 ± 7.12	− 32.13, − 4.35	− 4.75 ± 12.98	− 27.78, 23.08
	AW × JE	29.94 ± 14.69	1.48, 59.26	− 0.11 ± 16.31	− 33.87, 29.62
(b) Takeoff Angle difference	Intercept	7.48 ± 5.55	− 4.07, 17.65	− 8.98 ± 3.79	− 16.25, − 1.30
	AW	− 8.90 ± 19.61	− 50.67, 26.13	1.52 ± 9.61	− 18.41, 20.06
	JE	− 12.62 ± 10.95	− 33.98, 9.16	14.54 ± 14.77	− 12.78, 45.44
	AW × JE	40.05 ± 25.50	− 8.63, 91.91	− 11.84 ± 19.65	− 51.31, 26.16
(c) Takeoff Velocity difference	Intercept	0.07 ± 0.07	− 0.06, 0.21	− 0.05 ± 0.06	− 0.18, 0.07
	AW	− 0.18 ± 0.18	− 0.56, 0.16	− 0.03 ± 0.003	− 0.29, 0.22
	JE	− 0.26 ± 0.11	− 0.48, − 0.05	0.02 ± 0.20	− 0.32, 0.44
	AW × JE	0.54 ± 0.25	0.07, 1.04	− 0.08 ± 0.004	− 0.60, 0.40

Adjustment is measured by a difference between the Second and First jump for each individual (Fig. 1). Bold texts indicate statistically significant effects. Results obtained from linear regression analysis using 10,000 bootstrap iterations. Estimated coefficient values and their standard deviations (SD) as well as 95% confidence intervals (95% CI) are shown for females and males separately. Additional statistical analyses are shown in Supplementary Materials PART 2. The table corresponds to Fig. 3.