Establishing the relevance of psychological determinants regarding physical activity in people with overweight and obesity

Cristina Lugones-Sanchez; Rik Crutzen; Jose I Recio-Rodriguez; Luis Garcia-Ortiz

doi:10.1016/j.ijchp.2021.100250

Establishing the relevance of psychological determinants regarding physical activity in people with overweight and obesity

Int J Clin Health Psychol. 2021 Sep-Dec;21(3):100250. doi: 10.1016/j.ijchp.2021.100250. Epub 2021 Apr 25.

Authors

Cristina Lugones-Sanchez¹, Rik Crutzen², Jose I Recio-Rodriguez^{1

3}, Luis Garcia-Ortiz^{1

4}

Affiliations

¹ Institute of Biomedical Research of Salamanca (IBSAL), Primary Care Research Unit of Salamanca (APISAL), Health Service of Castile and Leon (SACyL), Salamanca, Spain.
² Department of Health Promotion, Care and Public Health Research Institute (CAPHRI), Maastricht University, The Netherlands.
³ Department of Nursing and Physiotherapy, University of Salamanca, Spain.
⁴ Department of Biomedical and Diagnostic Sciences, University of Salamanca, Spain.

Abstract
in English, Spanish

To identify the most relevant determinants involved in Physical Activity (PA) changes in the EVIDENT 3 study population, measured by the International PA Questionnaire (IPAQ) and the Actigraph GT3X accelerometer.

Method: Exploratory study. Data used were collected from EVIDENT 3 study (N = 650). Items to measure psychological determinants were chosen from the baseline questionnaires. PA minutes/week were assessed by an accelerometer and IPAQ. The sample was analyzed by the control group (CG), the intervention group (IG) and Body Mass Index, using Confidence Interval-Based Estimation of Relevance (CIBER) analyses.

Results: 486 participants, (IG: n = 251, CG: n = 235) were included. IG shows a positive association between PA assessed by accelerometer and self-efficacy. In IG, the overweight sample shows a positive association between PA assessed by accelerometer and motivation and self-efficacy. PA assessed by accelerometer obtained a higher explained variance (R² ) in IG, both people with overweight (.10 - .55) and obesity (.03 - .19). In CG, IPAQ reached better results in people with overweight (.12 - .49).

Conclusions: Motivation and self-efficacy showed as relevant in increasing PA minutes/week, but only in the people with overweight in IG. There might be other factors not analyzed that could improve the low R² obtained.

Identificar los determinantes más relevantes en el aumento de la actividad física (AF) de la población incluida en el estudio EVIDENT 3, medido con IPAQ y acelerómetro Actigraph GT3X. Método: Los datos se recogieron del estudio EVIDENT 3 (N = 650). Las preguntas para medir los determinantes psicológicos se recogieron de los cuestionarios basales. Los minutos de AF se midieron con el IPAQ y acelerómetro. Se analizó la muestra por grupo de estudio: control (GC) e intervención (GI) y por IMC con el método CIBER (Confidence Interval-Based Estimation of Relevance). Resultados: Se incluyeron 486 participantes (GI: n = 251, GC: n = 235). En GI se mostró asociación positiva entre el acelerómetro y la autoeficacia. Las personas con sobrepeso del GI mostraron asociaciones del acelerómetro con la motivación y la autoeficacia. El acelerómetro obtuvo mayor varianza explicada (R² ) en el GI, tanto en personas con sobrepeso (0,10 – 0,55) como con obesidad (0,03 – 0,19). En el GC el IPAQ obtuvo mejores resultados en personas con sobrepeso (0,12 – 0,49). Conclusión: La motivación y la autoeficacia fueron relevantes para aumentar los minutos de AF, pero solo en personas con sobrepeso del GI. Puede haber factores no incluidos que expliquen el bajo R² encontrado.

Keywords: Accelerometry; Experiment; Motivation; Obesity; Physical activity.

Abstract in English, Spanish

Abstract
in English, Spanish