Table 2 Descriptive summary of physical activity, physical fitness and adiposity measurements, split by year group and sex. Data are mean ± SD and (range)

Average Acceleration (mg)

17.7 ± 4.6 (11.4 – 29.6)

13.3 ± 3.4 (5.8 – 20.1)

14.2 ± 4 (7.5 – 20.7)

12.5 ± 3.4 (8.1 – 21.9)

Intensity Gradient (AU)

-2.34 ± 0.14 (-2.58 – -2.12)

-2.51 ± 0.19 (-2.83 – -2.13)

-2.43 ± 0.23 (-2.87 – -1.98)

-2.57 ± 0.19 (-2.86 – -2.23)

MSFT (m)

1395 ± 435 (720–2250)

1215 ± 435 (540–2550)

2295 ± 450 (1650–3240)

1380 ± 405 (720–2460)

Waist Circumference (cm)

65.8 ± 6.9 (56.7 – 84.0)

66.5 ± 7.4 (55.9 – 84.1)

72.8 ± 6.4 (62.8 – 91.6)

68.2 ± 6.4 (60.5 – 91.0)