Criterion related validity of the short form of the International Physical Acti...

• Author(s): Marmeleira, José ; Laranjo, Luís ; Marques, Olga ; Batalha, Nuno
• Date: 2013
• Persistent ID: http://hdl.handle.net/10174/9902
• Origin: Repositório Científico da Universidade de Évora
• Subject(s): Visual Impairment; Physical Activity; Accelerometry; IPAQ-S
• Document Type: Article
• Language: English

Description

This study examined the criterion validity and measurement bias of the IPAQ-S in adults who are blind using accelerometry as an objective measure of physical activity. Sixty-seven adults who were legally blind participated. The agreement between the ActiGraph and IPAQ-S for the time spent in moderate or vigorous physical activity and in sedentary behavior was examined by a Bland–Altman analysis, in which the differences between the ActiGraph and IPAQ-S were plotted against the means of both. We conclude that the IPAQ-S has acceptable criterion validity for use with young and middle-aged adults who are blind. However, there is limited agreement on physical activity and sedentary behavior measured with the accelerometer and IPAQ-S. The specificity of IPAQ-S to classify correctly people who achieved current physical activity guidelines was low, whereas the sensitivity was acceptable.