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Table 1 The cut-off limits of different physical activity category. MET: Metabolic Equivalent

From: The association between different physical activity levels and flexion-relaxation phenomenon in women: a cross-sectional study

Physical activity category

Cut-off limits

1 Low

- no activity is reported or

- some activity is reported but not enough to meet categories 2 or 3

2 Moderate

− 3 or more days of vigorous activity for at least 20 min. per day or

− 5 or more days of moderate intensity activity or walking for at least 30 min. per day or

− 5 or more days of any combination of walking, moderate intensity or vigorous intensity activities achieving a minimum of 600 MET min/week

3 High

− 3 or more days of vigorous activity accumulating at least 1500 MET min/week or

− 7 days of any combination of walking, moderate or vigorous intensity activities achieving a minimum of 3000 MET min/week