Table 2. Comparison of measured EE by Vmax (CMEE) and estimated EE by GT9X-EE in 5 treadmill walking/running tests (mean ± SD).

Position	Treadmill Speed (km/h)	CMEE (kcal kgw−1 min−1)	GT9X-EE (kcal kgw−1 min−1)	ES	MAPE (%)	r	ICC
Wrist	4.80	0.070 ± 0.009	0.055 ± 0.010*	1.58	21.43	0.105
	6.42	0.111 ± 0.014	0.065 ± 0.008*	4.03	41.44	0.030
	8.04	0.148 ± 0.010	0.071 ± 0.005*	9.74	52.03	−0.169	0.073
	9.66	0.172 ± 0.012	0.072 ± 0.005*	10.88	58.14	−0.165
	11.28	0.202 ± 0.015	0.073 ± 0.005*	11.54	63.86	−0.130
Hip	4.80	0.070 ± 0.009	0.066 ± 0.013	0.36	5.71	0.529**
	6.42	0.111 ± 0.014	0.104 ± 0.021*	0.39	6.31	0.428**
	8.04	0.148 ± 0.010	0.141 ± 0.026*	0.36	4.73	0.110	0.868
	9.66	0.172 ± 0.012	0.163 ± 0.023*	0.49	5.23	0.210**
	11.28	0.202 ± 0.015	0.181 ± 0.023*	1.08	10.40	0.162

Notes.

^*Significantly different from CMEE, p < 0.05.

^**Significant correlation with CMEE, p < 0.001.

Mean values ± standard deviation (SD); CMEE, criterion measure energy expenditure; GT9X, ActiGraph GT9X-Link accelerometer; ES, Effect size (Cohen’s d); Mean Absolute Percentage Error (MAPE) = {[ | (Predicted value - Actual value) |/Actual value] * 100}/n; r, Pearson coefficient of determination; ICC, intraclass correlation coefficient.