. 2017 May 16;29(5):822–827. doi: 10.1589/jpts.2017.822

Table 3. Correlation coefficients among THBI and spatio-temporal parameters (n=31).

		Spatio-temporal parameters			Walking efficiency

		Speed	Step length	Cadence	THBI	Walking heartbeats	Waking distance
Spatio-temporal paremeters
	Speed		0.76^a	0.47^b	–0.52^a	-	0.73^a
	Step length	0.76^a		-	–0.71^a	–0.41^a	0.69^a
	Cadence	0.47^b	-		-	-	-
Walking efficiency parameters
	THBI	–0.52^a	–0.71^a	-		0.85^a	0.49^a
	Walking heartbeats	-	–0.41^a	-	0.85^a		-
	Walking distance	0.73^a	–0.69^a	-	–0.49^a	-
Gross motor performance
	Maximum step length (D)	0.41^a	0.66^a	-	–0.87^a	–0.78^a	0.37^a
	Maximum step length (N)	0.44^a	0.71^a	-	–0.86^a	–0.73^a	0.43^a
	Maximum side-step length (A)	-	0.61^a	-	–0.82^a	–0.71^a	0.40^a
	Step number (A)	0.36^a	0.46^a	-	–0.46^a	–0.73^a	-
	Lateral step-up number (A)	0.37^b	0.46^b	-	–0.77^b	–0.60^b	0.42
	Single-leg standing time (D)	0.42^b	0.61^b	-	–0.84^b	–0.66^b	0.43^b
	Single-leg standing time (N)	-	0.40^b	-	–0.53^b	0.42^b	-

^ap<0.05, Pearson’s product moment correlation coefficient; ^bp<0.05, Spearman’s rank correlation coefficient. Correlation values: 0.21–0.40, fair; 0.41–0.60, moderate; 0.61–0.80 (bold), good; 0.81–1.00 (underlined bold), very good. THBI: total heart beat index; D: dominant side; N: non-dominant side; A: average