Factors Associated With Activity Limitations in People With Rheumatoid Arthritis.
OBJECTIVE
We evaluated factors contributing to activity limitations in people with rheumatoid arthritis (RA) according to the International Classification of Functioning, Disability and Health model.


METHODS
In a cross-sectional study, we measured five activity constructs in 81 people with RA.


RESULTS
Multiple regression analysis revealed the following results for the five constructs: (1) RA Activities (R² = .512) included handgrip strength, range of motion deficit, deformity, and mental health; (2) Upper-Limb Activities (R² = .473) included time since diagnosis, dexterity, handgrip strength, and range of motion deficit; (3) Timed Activities (R² = .320) included dexterity and work activities; (4) Physical Autonomy Activities (R² = .562) included range of motion deficit, vitality, pain, and functional classification; and (5) Physical Conditions for Activities (R² = .416) included functional classification and vitality.


CONCLUSIONS
Factors most associated with activity limitations were handgrip strength and hand range of motion deficits. Activity limitations in people with RA are multifactorial.
Júnia A. Andrade, PhD, is Occupational Therapist, Clinics Hospital, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Júnia A
JA
Andrade
Maria Raquel C. Pinto, MSc, is Rheumatologist, Department of Rheumatology, Clinics Hospital, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Marina B
MB
Brandão
Cristina C. D. Lanna, PhD, is Rheumatologist and Associate Professor, Department of Locomotor System, School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil; duartelanna@gmail.com.
Maria Raquel C
MR
Pinto
Marina B. Brandão, PhD, is Occupational Therapist and Adjunct Professor, Department of Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Cristina C D
CC
Lanna
D000203:Activities of Daily Living; D001172:Arthritis, Rheumatoid / Q000503:physiopathology*; D003430:Cross-Sectional Studies; D005260:Female; D018737:Hand Strength; D006801:Humans; D016014:Linear Models; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D015999:Multivariate Analysis; D010147:Pain Measurement; D016059:Range of Motion, Articular; D012720:Severity of Illness Index