Validation of activity questionnaires in patients with cystic fibrosis by accelerometry and cycle ergometry

Abstract

BackgroundThe objective of this study was to validate physical activity questionnaires for cystic fibrosis (CF) against accelerometry and cycle ergometry.Methods41 patients with CF (12-42 years) completed the Habitual Activity Estimation Scale (HAES), the 7-Day Physical Activity Recall questionnaire (7D-PAR) and the Lipid Research Clinics questionnaire (LRC) and performed an incremental exercise test according to the Godfrey protocol up to volitional fatigue. Time spent in moderate and vigorous physical activity (MVPA) assessed objectively by accelerometry was related to the time spent in the respective activity categories by correlation analyses and calculating intraclass correlation coefficients (ICC). Furthermore, the results of the exercise test were correlated with the results of the questionnaires.ResultsTime spent in the categories 'hard','very hard' and 'hard & very hard' of the 7D-PAR (0.41 < r < 0.56) and 'active' (r = 0.33) of the HAES correlated significantly with MVPA. The activity levels of the LRC were not related to objectively determined physical activity. Significant ICCs were only observed between the 7D-PAR activitiy categories and MVPA (ICC = 0.40-0.44). Only the LRC showed moderate correlations with the exercise test (Wmax: r = 0.46, p = 0.002; VO2peak: r = 0.32, p = 0.041).ConclusionsIn conclusion, the activity categories 'hard' and 'very hard' of the 7D-PAR best reflected objectively measured MVPA. Since the association was at most moderate, the 7D-PAR may be selected to describe physical activity within a population. None of the evaluated questionnaires was able to generate valid physical activity data exercise performance data at the individual level. Neither did any of the questionnaires provide a valid assessment of aerobic fitness on an invidual level.

Longitudinal relationship between physical activity and lung health in patients with cystic fibrosis

“…Current values for HPA are similar to those reported in a small number of youths with CF [22] and somewhat lower than those reported by RUF et al [31] of 7.4 h?day -1 (females) and 6.0 h?day -1 (males) for patients with CF (aged 12-41 years). The latter may be explained by their inclusion of weekend activity, which was excluded in our analysis due to greater variability in preliminary analyses [8].…”

Measurement of physical activity in patients with cystic fibrosis: a systematic review

“…The intraclass correlation coefficient (ICC) estimates of reliability for the HAES was 0.72 (p < 0.001) [19]. Particularly, time spent in the category 'active' of the HAES was correlated significantly with MVPA (time spent in moderate and vigorous PA) assessed by accelometry (r = 0.33) [17]. However, young children found the HAES too difficult to fill out, but it appears feasible for their parents [20].…”

“…To measure PA levels and patterns in the healthy population, accelerometry and questionnaires have been used. The Lipid Research Clinics (LRC), the Seven Day Physical Activity Recall (7D-PAR) and the Habitual Activity Estimation Scale (HAES) questionnaire performed and validated in healthy children and adults and have also been employed in patients with CF [17]. A lot of research has been done on measuring PA; however, it is relatively unknown which instruments are valid and usable in patients with CF.…”

Physical activity assessment in cystic fibrosis: A position statement

“…[18,20,23] ActiGraph Evidence of responsiveness to IVAB a . [24,25] Evidence of correlation with the HAES and the 7 day PAR questionnaires and the Bratteby activity diary a, b,c [24,25] Within CF able to discriminate between gender a, b, c and disease severity b, c [15,24] Evidence of significant correlation with exercise capacity a, b, c [3] Evidence of responsiveness to a physical conditioning program a, b, c [5] RT3 Evidence of significant correlation with step rate/count and respiratory symptoms diary and lung function a, b [29] Evidence of responsiveness to IVAB a, b [29] a Adults. b Adolescents.…”

“…c Children. Reliable over two points in time a, b, c [25] Evidence of correlation with activity monitors (Sensewear and Actigraph) a, b, c and diaries (Boucher and Bratteby) a, b, c Significant difference between activity in child vs. parent versions of HAES [9,21,24,25,30] Within CF able to discriminate between responders and nonresponders to an exercise programme b, c [31] Significant correlation with exercise capacity, body mass and lung function b, c [9,10,30] Evidence of responsiveness to training programmes b, c [11,31] Baecke Questionnaire None None None Evidence of significant correlation with bone mineral density and energy intake a [32,33] None Kriska Modifiable Activity Questionnaire…”