Social cognitive constructs and the promotion of physical activity in patients with peripheral artery disease.
OBJECTIVE
The purpose of this study was to provide measures and accompanying psychometric support for key constructs from social cognitive theory relevant to the promotion of physical activity in patients with peripheral artery disease (PAD).


METHODS
Patients (n = 205) were identified from 2 ongoing studies involving PAD, who completed the Geriatric Depression Scale, a 6-minute walk, and the social cognitive measures of interest: pain acceptance, self-efficacy, desire for physical competence, perceived control for walking, and satisfaction with function. Psychometric support for each measure included factor analyses, test-retest reliability, and an evaluation of construct validity by investigating how each measure was related to depression and performance on the 6-minute walk test.


RESULTS
The measures of interest had good structural integrity, were reliable, and shared expected variance with depressed affect; most had significant linear trends with the 6-minute walk test, suggesting that compromised psychological status is related to poorer mobility.


CONCLUSIONS
Constructs from social cognitive theory are clearly relevant to the promotion of physical activity in PAD patients. To this end, this study offers measures of relevant constructs that can now be implemented into intervention research.
Rejeski
W Jack
WJ
Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27109, USA. rejeski@wfu.edu
Tian
Lu
L
Liao
Yihua
Y
McDermott
Mary M
MM
D000368:Aged; D000369:Aged, 80 and over; D003863:Depression / Q000150:complications; D015444:Exercise / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity; D010146:Pain / Q000523:psychology; D016491:Peripheral Vascular Diseases / Q000503:physiopathology / Q000523:psychology; D011582:Psychological Theory; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy; D016138:Walking