Table 3
Physical activity intensity cut-points for Actical accelerometer29,30

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Intensity Activity energy expenditure
(kcal  kg-1   min-1 )
Physical activity ratio
Example Accelerometer count range
(counts per minute)
Sedentary Less than 0.01 Less than 1.5 Car travel, sitting, reclining, standing Less than 100*
Light 0.01 to less than 0.04 1.5 to less than 3.0 Walking less than 3.2 km/h, light play 100 to less than 1,500
Moderate 0.04 to less than 0.10 3.0 to less than 6.0 Walking more than 3.2 km/h, aerobics 1,500 to less than 6,500
Vigorous 0.10 or more 6.0 or more Jogging, running 6,500 or more
EE = energy expenditure
BMR = basal metabloic rate
* including wear-time zeros