BMC Geriatrics

Table 3 Actigraph thresholds for light to maximal intensity (in VO_2max%) for men and women of different fitness tertiles

From: New relative intensity ambulatory accelerometer thresholds for elderly men and women: the Generation 100 study

Relative Intensity			Vertical Axis (cpm)				Vector Magnitude (cpm)
Intensity	VO_2max (%)		Pooled	Low Fitness	Medium Fitness	High Fitness	Pooled	Low Fitness	Medium Fitness	High Fitness
		Men	(N = 49)	(N = 17)	(N = 23)	(N = 9)	(N = 49)	(N = 17)	(N = 23)	(N = 9)
Light	37−45		56−266	51−204	57−289	60−421	611−1652	399−833	735−2004	2167−3047
Moderate	46−63		267−1971	205−1102	290−2254	422−3131	1653−3016	834−2011	2005−3285	3048−4048
Vigorous	64−90		1972−3878	1103−3001	2255−4097	3132−4747	3017−4581	2012−3688	3286−4802	4049−5423
Near-max to max	≥91		>3879	>3002	>4098	>4748	>4582	>3689	>4803	>5424
Intensity	VO_2max (%)		Pooled	Low Fitness	Medium Fitness	High Fitness	Pooled	Low Fitness	Medium Fitness	High Fitness
		Women	(N = 48)	(N = 16)	(N = 22)	(N = 10)	(N = 48)	(N = 16)	(N = 22)	(N = 10)
Light	37−45		60−212	55−175	62−223	67−269	465−1076	347−668	513−1268	790−2116
Moderate	46−63		213−1217	175−788	224−1380	270−2024	1077−2424	669−1624	1269−2662	2117−3367
Vigorous	64−90		1218−3157	789−2438	1381−3345	2025−3920	2425−4078	1625−3266	2663−4283	3368−4868
Near-max to max	≥91		>3158	>2439	>3346	>3921	>4079	>3267	>4284	>4869

Fitness tertiles for (1) women: Low <23.6 ml · kg⁻¹ · min⁻¹, Med = 23.6−29.8 ml · kg⁻¹ · min⁻¹, high > 29.8 ml · kg⁻¹ · min⁻¹,pooled = all tertiles of fitness together (2) men: Low < 27.0 ml · kg⁻¹ · min⁻¹, Med = 27.0−35.6 ml · kg⁻¹ · min⁻¹,High >35.6 ml · kg⁻¹ · min⁻¹, pooled = all tertiles of fitness together
Abbreviations: VO_2max Maximal Oxygen Uptake, VA vertical axis, VM vector magnitude, cpm CPM

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