Abstract
A low rate of physical activity (PA) participation is observed worldwide. The identification of feasible and reliable instruments able to accurately measuring PA and help in the development of interventions to promote PA are necessary. This study aimed to analyze the concordance between the Stages of Behavior Change Questionnaire (SBCQ) and the International Physical Activity Questionnaire (IPAQ long-version) in assessing adult leisure-time physical activity (LTPA). A total of 1.588 adults completed the IPAQ to assess LTPA and the participants who performed more than 10 min/week were classified in active individuals. Using the SBCQ, active individuals were those classified in the action or maintenance stage and inactive individuals were those classified in the precontemplation, contemplation or preparation stage. The concordance between SBCQ and IPAQ was found to be 0.80. Separated by gender, it was observed a concordance between the two instruments of 0.82 for women, and 0.77 for men. Regarding age group, it was found to be 0.81 for young and middle-aged adults, and 0.77 for older people. The SBCQ presented a very good concordance with IPAQ to assess LTPA.
Highlights
The benefits of physical activity (PA) health are well understood (Garber et al, 2011; Wen et al, 2011)
Of the 1,581 individuals assessed by the International Physical Activity Questionnaire (IPAQ), 599 (38%) were classified as active (> 10 min/week); and by means of the Stages of Behavioral Change Questionnaire (SBCQ), 545 (34.5%) were classified in the active stages of Stages of Behavioral Change (SBC): the action and maintenance stage
Kappa analysis revealed that the concordance between SBCQ and IPAQ in evaluating leisure-time physical activity (LTPA) was very good (k=0.80; 95% CI = 0.77-0.83) (Table 1)
Summary
The benefits of physical activity (PA) health are well understood (Garber et al, 2011; Wen et al, 2011). To develop interventions to promote PA, several studies have used the Transtheoretical Stages of Behavioral Change (SBC) Model (Gorczynski, Faulkner, & Cohn, 2010; Si et al, 2011; Tuah, Amiel, Qureshi, Car, Kaur, & Majeed, 2011). This model describes how people move dynamically through five different stages of behavioral change. Through identifying the relevance of a specific health behavior in a person’s life using an assessment algorithm, people can be classified into a stage of change: precontemplation, contemplation, preparation, action, or maintenance (Dishman 1994). The Stages of Behavioral Change Questionnaire (SBCQ) was developed to properly classify individuals into a stage of change to fit into the SBC model. One of the great advantages of classifying individuals into these stages is the possibility of developing tailored interventions to promote PA that are may be more effective
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