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Physical activity in climacteric women: comparison between self-reporting and pedometer.

Colpani V, Spritzer PM, Lodi AP, Dorigo GG, Miranda IA, Hahn LB, Palludo LP, Pietroski RL, Oppermann K - Rev Saude Publica (2014)

Bottom Line: In Bland-Altman plots, it was observed that differences deviate from zero value whether the physical activity is minimal or more intense.Agreement between the methods was weak.Although easy to use, Physical Activity Questionnaire--short version overestimates physical activity compared with assessment by pedometer.

View Article: PubMed Central - PubMed

Affiliation: Unidade de Endocrinologia Ginecológica, Serviço de Endocrinologia, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brasil.

ABSTRACT

Objective: To compare two methods of assessing physical activity in pre-, peri- and postmenopausal women.

Methods: Cross-sectional study nested in a cohort of pre-, peri- and postmenopausal women in a city in Southern Brazil. The participants completed a questionnaire that included sociodemographic and clinical data. Physical activity was assessed using a digital pedometer and the International Physical Activity Questionnaire, short version. The participants were classified into strata of physical activity according to the instrument used. For statistical analysis, the Spearman correlation test, Kappa index, concordance coefficient and Bland-Altman plots were used.

Results: The concordance (k = 0110; p = 0.007) and the correlation (rho = 0.136, p = 0.02) between the International Physical Activity Questionnaire, short version, and pedometer were weak. In Bland-Altman plots, it was observed that differences deviate from zero value whether the physical activity is minimal or more intense. Comparing the two methods, the frequency of inactive women is higher when assessed by pedometer than by the International Physical Activity Questionnaire--short version, and the opposite occurs in active women.

Conclusions: Agreement between the methods was weak. Although easy to use, Physical Activity Questionnaire--short version overestimates physical activity compared with assessment by pedometer.

Show MeSH
Analysis of correlation and concordance in measures of physical activitybetween the International Physical Activity Questionnaire – short form andpedometer.ULC: Upper limit of concordance; LLC: Lower limit of concordanceA. Spearman’s correlation (rho = 0.113; p = 0.025)B. Bland-Altman test for concordance of measures of physical activity betweenthe IPAQ-SF and the pedometer, mean Z score of steps/MET(log)
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f01: Analysis of correlation and concordance in measures of physical activitybetween the International Physical Activity Questionnaire – short form andpedometer.ULC: Upper limit of concordance; LLC: Lower limit of concordanceA. Spearman’s correlation (rho = 0.113; p = 0.025)B. Bland-Altman test for concordance of measures of physical activity betweenthe IPAQ-SF and the pedometer, mean Z score of steps/MET(log)

Mentions: Correlation, evaluated using Spearman’s test, was significant, although weak (meansteps/day and MET/min/week, rho = 0.113; p = 0.025) (Figure, A). Figure (B) shows theBland-Altman graph, in which it can be seen that the majority of observations arewithin the 95% concordance level (± 1.96 SD) and that the mean difference inthe Z score of both tests was close to zero. However, it was observed that thedifferences were distant from zero both when PA was minimal and when it was moreintense.


Physical activity in climacteric women: comparison between self-reporting and pedometer.

Colpani V, Spritzer PM, Lodi AP, Dorigo GG, Miranda IA, Hahn LB, Palludo LP, Pietroski RL, Oppermann K - Rev Saude Publica (2014)

Analysis of correlation and concordance in measures of physical activitybetween the International Physical Activity Questionnaire – short form andpedometer.ULC: Upper limit of concordance; LLC: Lower limit of concordanceA. Spearman’s correlation (rho = 0.113; p = 0.025)B. Bland-Altman test for concordance of measures of physical activity betweenthe IPAQ-SF and the pedometer, mean Z score of steps/MET(log)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4206143&req=5

f01: Analysis of correlation and concordance in measures of physical activitybetween the International Physical Activity Questionnaire – short form andpedometer.ULC: Upper limit of concordance; LLC: Lower limit of concordanceA. Spearman’s correlation (rho = 0.113; p = 0.025)B. Bland-Altman test for concordance of measures of physical activity betweenthe IPAQ-SF and the pedometer, mean Z score of steps/MET(log)
Mentions: Correlation, evaluated using Spearman’s test, was significant, although weak (meansteps/day and MET/min/week, rho = 0.113; p = 0.025) (Figure, A). Figure (B) shows theBland-Altman graph, in which it can be seen that the majority of observations arewithin the 95% concordance level (± 1.96 SD) and that the mean difference inthe Z score of both tests was close to zero. However, it was observed that thedifferences were distant from zero both when PA was minimal and when it was moreintense.

Bottom Line: In Bland-Altman plots, it was observed that differences deviate from zero value whether the physical activity is minimal or more intense.Agreement between the methods was weak.Although easy to use, Physical Activity Questionnaire--short version overestimates physical activity compared with assessment by pedometer.

View Article: PubMed Central - PubMed

Affiliation: Unidade de Endocrinologia Ginecológica, Serviço de Endocrinologia, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS, Brasil.

ABSTRACT

Objective: To compare two methods of assessing physical activity in pre-, peri- and postmenopausal women.

Methods: Cross-sectional study nested in a cohort of pre-, peri- and postmenopausal women in a city in Southern Brazil. The participants completed a questionnaire that included sociodemographic and clinical data. Physical activity was assessed using a digital pedometer and the International Physical Activity Questionnaire, short version. The participants were classified into strata of physical activity according to the instrument used. For statistical analysis, the Spearman correlation test, Kappa index, concordance coefficient and Bland-Altman plots were used.

Results: The concordance (k = 0110; p = 0.007) and the correlation (rho = 0.136, p = 0.02) between the International Physical Activity Questionnaire, short version, and pedometer were weak. In Bland-Altman plots, it was observed that differences deviate from zero value whether the physical activity is minimal or more intense. Comparing the two methods, the frequency of inactive women is higher when assessed by pedometer than by the International Physical Activity Questionnaire--short version, and the opposite occurs in active women.

Conclusions: Agreement between the methods was weak. Although easy to use, Physical Activity Questionnaire--short version overestimates physical activity compared with assessment by pedometer.

Show MeSH