Article

This study aims to evaluate the prevalence and determinants of
inadequate physical activity and excessive sedentary behaviour before and after
total knee replacement. DESIGN, Secondary analysis was
performed on data from a cohort of 422 adults (45-74 years), drawn from 12 public
or private hospitals, undergoing primary unilateral or bilateral total knee
replacement surgery. MAIN MEASURES: Questionnaires were used to determine the
presence of inadequate physical activity and excessive sedentary behaviour before
and 6 and 12 months after total knee replacement surgery. Knee pain, activity
limitations, comorbidities, muscle strength, psychological well-being, fatigue,
sleep and body mass index were measured/assessed as possible determinants of
physical activity or sedentary behaviour. RESULTS: Before surgery, 77% ( n = 326)
of the cohort participated in inadequate physical activity according to World
Health Organization guidelines, and 60% ( n = 253) engaged in excessive sedentary
behaviour. Twelve months after surgery, 53% ( n = 185) of the cohort engaged in
inadequate physical activity and 45% ( n = 157) in excessive sedentary behaviour.
Inadequate physical activity before surgery ( P = 0.02), obesity ( P = 0.07) and
comorbidity score >6 ( P = 0.04) predicted inadequate physical activity 12 months
after surgery. Excessive sedentary behaviour and activity limitations before
surgery predicted excessive sedentary behaviour 12 months after surgery.
CONCLUSION: Although there were improvements after total knee replacement, 12
months after surgery about half the cohort did not meet World Health Organization
recommendations for activity. Pre-surgery assessment of physical activity,
activity limitations, sedentary behaviour and body mass index is essential to
identify patients at risk for long-term inactivity.

Langue : ANGLAIS