International Journal of Behavioral Nutrition and Physical Activity

Table 4 Heuristic cadence thresholds (steps/min) for moderate and vigorous intensity based on regression and ROC analysis

From: Cadence (steps/min) and intensity during ambulation in 6–20 year olds: the CADENCE-kids study

		Regression thresholds		ROC thresholds		Heuristic thresholds
Intensity	Age (years)	Cadence	99% CI^†	Cadence	99% CI	Cadence	Se	Sp
Moderate	6-8^a	128.4	121.7–134.5	121.3	106.3–134.9	125	78.8	93.4
	9-11^a	116.5	109.3–123.9	116.3	112.6–120.1	115	89.1	86.0
	12-14^a	106.6	102.5–111.0	108.7	100.6–114.4	110	86.4	95.2
	15-17^a	101.3	97.5–104.8	105.6	97.7–107.5	105	91.3	96.8
	18-20^b	87.3	79.4–95.7	95.9	85.7–96.4	90	91.4	86.7
Vigorous	6-8^a	157.7	151.8–164.0	149.0	147.5–167.2	155	85.7	99.0
	9-11^a	142.7	134.6–152.8	121.9	121.2–135.8	130	81.0	87.6
	12-14^a	129.3	124.1–135.6	116.3	109.9–130.5	125	77.8	93.0
	15-17^a	126.3	122.9–129.8	124.3	117.2–126.3	125	86.5	97.9
	18-20^b	129.9	126.3–133.6	119.3	118.3–124.9	125	86.7	94.8

Notes. Se = sensitivity. Sp = specificity. ^a Thresholds estimated using MET_y (mass-specific VO₂ [mL·kg·min⁻¹] divided by resting mass-specific VO₂ [estimated using the Schofield equation]) with moderate and vigorous intensity cut points of 4 and 6 MET_y, respectively. ^b Thresholds estimated using METs (mass-specific VO₂ [mL·kg·min^− 1] divided by 3.5 mL·kg·min^− 1) with moderate and vigorous intensity cut points of 3 and 6 METs, respectively. ^†Calibration intervals (99%) derived using inverse estimation

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ISSN: 1479-5868

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