Aging and the Social Cognitive Determinants of Physical Activity Behavior and Behavior Change: Evidence from the Guide to Health Trial

Table 1

Physical activity beliefs survey: scale descriptions.

Variable description	Sub-scale	# items	α
Social support from family for physical activity		3	.68
Self Efficacy	Overcoming barriers	11	.89
	Meeting goals in daily routine	9	.89
Positive physical, and self-evaluative expectations		3	.81
Negative physical, social, and self-evaluative expectations		6	.85
Self regulation (se of goal setting, planning, and self-monitoring)		7	.83

α  = Cronbach’s alpha coefficient of internal consistency.