They proposed the following classification of the theoretical variables: (a) psychological, cognitive, and emotional factors (e.g., attitudes, barriers to exercise, control over exercise, enjoyment of exercise, and expected benefits); (b) demographic and biological variables (e.g., age, occupation, number of children, education, and the male gender); (c) behavioral attributes and skill (e.g., activity history during childhood/youth and adulthood, attitude towards alcohol, quality of dietary habits and contemporary exercise program); (d) sociocultural factors (e.g., exercise models, class size, group cohesion, physician influence, past family influences, and social support from friends/peers, spouse/family, and staff/instructor); (e) physical environment factors (e.g., access to facilities that include actual and/or perceived access, climate/season, costs of supervised programs, disruptions in routine, and presence of home equipment); and (f) characteristics of physical activity (that is, intensity and perceived effort). (Sallis & Owen,
They proposed the following classification of the theoretical variables: (a) psychological, cognitive, and emotional factors (e.g., attitudes, barriers to exercise, control over exercise, enjoyment of exercise, and expected benefits); (b) demographic and biological variables (e.g., age, occupation, number of children, education, and the male gender); (c) behavioral attributes and skill (e.g., activity history during childhood/youth and adulthood, attitude towards alcohol, quality of dietary habits and contemporary exercise program); (d) sociocultural factors (e.g., exercise models, class size, group cohesion, physician influence, past family influences, and social support from friends/peers, spouse/family, and staff/instructor); (e) physical environment factors (e.g., access to facilities that include actual and/or perceived access, climate/season, costs of supervised programs, disruptions in routine, and presence of home equipment); and (f) characteristics of physical activity (that is, intensity and perceived effort). (Sallis & Owen,