To validate the transtheoretical model for exercise behavior and the constructs of decisional balance and self-efficacy for exercise in a low-income, poorly educated primary care sample.
Patients attending public primary-care clinics from 4 separate sites in Louisiana were interviewed regarding their health behaviors.
The data provide equivocal support for applying the transtheoretical model for exercise and integrating it with other models of behavior change within this population.
Further studies modifying the decisional balance measures are necessary before definitive statements regarding the applicability of these models to exercise within this specialized population can be made.
"The endorsement of more pros and fewer cons has been associated with more advanced SOC (e.g., action and maintenance) whereas more cons and fewer pros have been related to earlier SOC (e.g., precontemplation and contemplation) (Prochaska et al., 1994). Previous research has assessed this model in African American patients (Boudreaux et al. 1998; Carmack-Taylor et al., 2003; O'Hea et al., 2004) and have found mixed results. However, it has not been used to examine weight loss SOC specifically, or in individuals who received a stage-targeted weight loss intervention. "
[Show abstract][Hide abstract] ABSTRACT: Background/PurposeIdentifying mediators of physical activity change requires measurement instruments that are reliable, valid, and generalizable
to multiple populations. Despite continued application of the transtheoretical model (TTM) to the study of physical activity,
the structural components of the TTM measurement instruments have been understudied in diverse populations.
MethodsA multiethnic sample (N = 700, M
age = 47, 63% women, 38% Caucasian) of participants living in Hawaii completed TTM measures. The factor validity and measurement
equivalence/invariance (ME/I) of decisional balance, barrier self-efficacy, temptations, and processes of change instruments were explored between men, women, age groups, and ethnicities.
Results/ConclusionsMeasurement models of barrier self-efficacy and revised models of temptations and processes of change demonstrated sufficient
evidence for ME/I among all subgroups. A revised model of decisional balance demonstrated sufficient evidence for ME/I between
genders and among ethnicities, but not among age groups. Future research should examine the stability of these constructs
Annals of Behavioral Medicine 06/2008; 35(3):308-318. DOI:10.1007/s12160-008-9035-x · 4.20 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Exercise stage of change (ESOC), or readiness to exercise, has been measured using at least 13 instruments and 4 interviews, yet no comparison studies are available to determine optimal measures for use by health care providers. This pilot study compares ESOC classification between 3 instruments (scale-ladder, scale-true/false, and scale-5 choice); explores the feasibility of using a face-to-face structured interview; compares classification between instruments and interview; and examines the influence of sex, age, and education level on stage classification. Thirty healthy adults completed ESOC instruments in random order and then the interview. Scale-ladder and scale-true/false instruments exhibited almost perfect agreement (weighted kappa, 0.897). All instruments exhibited substantial agreement with interview (weighted kappa, 0.620-0.790). Stage classification did not differ significantly by sex, age, or education level. The authors recommend word clarification revision of the scale-5 choice instrument and further testing of the interview.
Progress in Cardiovascular Nursing 02/2007; 22(4):201-6. DOI:10.1111/j.0889-7204.2007.06494.x
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