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Reliability and validity of the international physical activity questionnaire compared to calibrated accelerometer cut-off points in the quantification of sedentary behaviour and physical activity in older adults
Ryan DJ,
Wullems JA,
Stebbings GK,
Morse CI,
Stewart CE,
et al.
(2018)
Reliability and validity of the international physical activity questionnaire compared to calibrated accelerometer cut-off points in the quantification of sedentary behaviour and physical activity in older adults.
PLOS ONE 13(4): e0195712.
https://doi.org/10.1371/journal.pone.0195712