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Table 2 Daily steps determined from the different accelerometer algorithms and from the Yamax pedometer in the low-medium and high active groups

From: Fourteen days free-living evaluation of an open-source algorithm for counting steps in healthy adults with a large variation in physical activity level

Group

Steps

Correlation

Difference

Algorithm

Mean (sd)

r

p-value

Mean (sd)

p-value

MAPE (%)

Low-med

 Yamax

7783 (4248)

-

-

-

-

-

 ALn

8037 (4064)

0.88

 < 0.001

254 (2078)

0.04

17

 ALlfe

14,452 (5474)

0.83

 < 0.001

6669 (3050)

 < 0.001

88

 GGIR

6654 (3978)

0.77

 < 0.001

-1129 (2800)

 < 0.001

28

High

 Yamax

16,773 (7409)

-

-

-

-

-

 ALn

16,375 (7324)

0.94

 < 0.001

-398 (2645)

0.008

9

 ALlfe

23,624 (7962)

0.87

 < 0.001

6851 (3886)

 < 0.001

43

 GGIR

9361 (4199)

0.45

 < 0.001

-7412 (6665)

 < 0.001

48

  1. ALn ActiLife normal filter, ALlfe ActiLife low frequency extension, GGIR open-source algorithm, MAPE mean absolute percent error