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

Table 2 Identified cadence thresholds (steps/min), sensitivity, and specificity corresponding to moderate and vigorous-intensity derived from regression analyses

		6–8 year olds^a		9–11 year olds^a		12–14 year olds^a		15–17 year olds^a		18–20 year olds^b
Intensity	Measure	Cadence	99% CI^†	Cadence	99% CI^†	Cadence	99% CI^†	Cadence	99% CI^†	Cadence	99% CI^†
Moderate	Thr	128.4	121.7–134.5	116.5	109.3–123.9	106.6	102.5–111.0	101.3	97.5–104.8	87.3	79.4–95.7
	Se (%)	60.6		89.1		90.9		95.2		94.2
	Sp (%)	94.7		89.5		86.7		92.5		80.0
Vigorous	Thr	157.7	151.8–164.0	142.7	134.6–152.8	129.3	124.1–135.6	126.3	122.9–129.8	129.9	126.3–133.6
	Se (%)	85.7		38.1		66.7		86.5		75.6
	Sp (%)	100.0		97.7		96.2		98.6		98.1

Notes. Thr = Cadence thresholds in steps/min. 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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