OA	Osteoarthritis
QoL	Quality of life
THR	Total hip replacement
TKR	Total knee replacement
OECD	Organization for Economic Cooperation and Development
PA	Physical activity
RCT	Randomized controlled trials
PAIR	Physical ActIvity after hip and knee Replacement
IG	Intervention group
CG	Control group
PreSA	Pre-surgical assessment
PostSA	Post-surgical assessment
9MA	Nine months after surgery
12MA	Twelve months after surgery
VAS	Visual Analogue Scale
SF-36	36-Item Short Form Survey
PROM	Patient-reported outcome measures
WOMAC	Western Ontario and McMaster Universities Osteoarthritis Index
HOOS	Hip disability and Osteoarthritis Outcome Score
KOOS	Knee injury and Osteoarthritis Outcome Score
TUG	Timed Up and Go
WHO	World Health Organization
30sCST	30-Second Chair Stand Test