Percentage change in obstructive sleep apnoea (OSA) metrics for each hour increase in MVPA-2010 and MVPA-Δ

OSA indexMVPA-2010MVPA-Δ
AHI events·h−1−0.5−0.6
REM AHI events·h−1−0.1−0.1
Mean oxygen desaturation %−0.2#−0.3#
T90% %−2.0#−1.5#
Mean hypopnoea duration s−0.06−0.1
Mean apnoea duration s−0.14−0.35#

MVPA-2010: time spent undertaking moderate to vigorous physical activity (MVPA) during 2010 collection; MVPA-Δ: change in time spent undertaking MVPA from baseline (2002–2006) to 2010; AHI: apnoea/hypopnoea index; REM: rapid eye movement; T90%: amount of sleep with oxygen saturation <90%. #: significant association.