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Table 1 Parameters extracted from AX3, categorized according to F.I.T.T. acronym

From: Objective assessment of physical activity and sedentary behaviour in knee osteoarthritis patients – beyond daily steps and total sedentary time

Dimension

Parameter

Frequency

Number of level steps

Number of ascending steps

Number of descending steps

Number of bicycling crank revolutions

Bouts of level steps

Bouts of ascending steps

Bouts of descending steps

Number of walking bouts (0–5 s)

Number of walking bouts (5–10 s)

Number of walking bouts (300–600 s)

Number of walking bouts (> 600 s)

Number of sedentary bouts (0–10 s)

Number of sedentary bouts (10–60 s)

Number of sedentary bouts (1200–1800 s)

Number of sedentary bouts (> 1800 s)

Intensity

Walking cadence

Time

Time spent walking

(incl. Level, ascend and descend).

Time spent bicycling

Time spent sitting

Time spent standing

Type

Walking

Stair/slope ascending

Stair/slope descending

Bicycling

Sitting

Standing

STS transfers

  1. STS Sit-to-stand