Recording the Daily Physical Activity of COPD Patients With an Accelerometer: An Analysis of Agreement and Repeatability

Lores, Vanesa; García‐Río, Francisco; Rojo, Blas; Alcolea, S.; Mediano, Olga

doi:10.1016/s1579-2129(07)60004-4

Cited by 18 publications

(17 citation statements)

References 31 publications

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“…The RT3 device has been used in prior studies of patients with COPD; 9,20,28,29 RT3 measurements in patients with COPD and healthy controls suggested reasonable reproducibility. 28 In our study, between-day variability for VMU/min during the week of monitoring was somewhat higher (29.6%) than that observed in a prior study employing a different activity device (21.6%). 8 Whether this reflects a larger amount of noise with the RT3 or greater variability of movement in our patient cohort remains to be determined.…”

Section: Baseline Physical Activity and Physiologic Parameters In Patcontrasting

confidence: 70%

Effects of Pulmonary Rehabilitation on Activity Levels in Patients With Chronic Obstructive Pulmonary Disease

Mador

Patel

Nadler

2011

Journal of Cardiopulmonary Rehabilitation and Prevention

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Section: Baseline Physical Activity and Physiologic Parameters In Patcontrasting

confidence: 70%

Effects of Pulmonary Rehabilitation on Activity Levels in Patients With Chronic Obstructive Pulmonary Disease

Mador

Patel

Nadler

2011

Journal of Cardiopulmonary Rehabilitation and Prevention

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“…The data suggest that a systematic day-to-day pattern is absent, similar to observations in healthy subjects comparably aged 31 and patients with COPD. 32 Therefore, we confidently suggest that correcting for weekly routines is not necessary. The exclusion of weekends could decrease the variability of the physical activity measurement and did not affect the intervention effect.…”

Section: Discussionmentioning

confidence: 83%

Standardizing the Analysis of Physical Activity in Patients With COPD Following a Pulmonary Rehabilitation Program

Demeyer

Burtin

Remoortel

et al. 2014

Chest

190

159

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BACKGROUND:There is a wide variability in measurement methodology of physical activity. This study investigated the effect of different analysis techniques on the statistical power of physical activity outcomes after pulmonary rehabilitation.METHODS:Physical activity was measured with an activity monitor armband in 57 patients with COPD (mean ± SD age, 66 ± 7 years; FEV1, 46 ± 17% predicted) before and after 3 months of pulmonary rehabilitation. The choice of the outcome (daily number of steps [STEPS], time spent in at least moderate physical activity [TMA], mean metabolic equivalents of task level [METS], and activity time [ACT]), impact of weekends, number of days of assessment, postprocessing techniques, and influence of duration of daylight time (DT) on the sample size to achieve a power of 0.8 were investigated.RESULTS:The STEPS and ACT (1.6-2.3 metabolic equivalents of task) were the most sensitive outcomes. Excluding weekends decreased the sample size for STEPS (83 vs 56), TMA (160 vs 148), and METS (251 vs 207). Using 4 weekdays (STEPS and TMA) or 5 weekdays (METS) rendered the lowest sample size. Excluding days with < 8 h wearing time reduced the sample size for STEPS (56 vs 51). Differences in DT were an important confounder.CONCLUSIONS:Changes in physical activity following pulmonary rehabilitation are best measured for 4 weekdays, including only days with at least 8 h of wearing time (during waking hours) and considering the difference in DT as a covariate in the analysis.TRIAL REGISTRY:ClinicalTrials.gov; No.: NCT00948623; URL: www.clinicaltrials.gov

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“…For subjects with COPD exacerbation, the cutoff point determined to be considered frail was 3.54; for stable COPD subjects, the cutoff point was 3.88; and for the healthy subjects, the cutoff point was 3.50. As long as COPD patients have a lower degree of physical activity than healthy adults of the same age, 70 due to their poorer state of health, 71 the questionnaire could contribute to the early detection and treatment of frailty in clinical practice. From the several cutoff points obtained in the analysis of the ROC curve with high sensitivity and specificity, it is proposed to use a cutoff point score of 3.54 points in patients with COPD exacerbation and 3.88 points in patients with stable COPD, in the total of the Baecke questionnaire.…”

Section: Discussionmentioning

confidence: 99%

Physical Activity as a Predictor of Absence of Frailty in Subjects With Stable COPD and COPD Exacerbation

et al. 2015

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BACKGROUND: Frailty is a key issue in the care of elderly patients. Patients with COPD are more likely to be frail, with a prevalence of 57.8%. Frailty is associated with a low level of physical activity. The aim of this study was to analyze the predictive power and identify the cutoffs of physical activity in their different domains (household, leisure time, and sport) for the absence of frailty in subjects with COPD exacerbation and stable COPD. METHODS: A cross-sectional study was conducted. The participants underwent an individual interview, including sociodemographic and clinical aspects. The total physical activity and its domains were assessed by the modified Baecke questionnaire, and frailty was measured according to the modified version of Fried. A total of 212 subjects with COPD (104 stable and 108 with COPD exacerbation) were enrolled, along with 100 healthy subjects. RESULTS: The prevalence of frailty was higher in subjects with COPD compared with the control group. An activity level of 3.54 for COPD exacerbation, 3.88 for stable COPD, and 3.50 for healthy subjects assessed using the Baecke questionnaire were recommended as the cutoff points for frailty. Sensitivity and specificity values were 0.95 and 0.807; 0.95 and 0.815; and 0.95 and 0.947, respectively. CONCLUSIONS: Physical activity level can predict the absence or presence of frailty in subjects with stable and exacerbated COPD.

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Recording the Daily Physical Activity of COPD Patients With an Accelerometer: An Analysis of Agreement and Repeatability

Cited by 18 publications

References 31 publications

Effects of Pulmonary Rehabilitation on Activity Levels in Patients With Chronic Obstructive Pulmonary Disease

Effects of Pulmonary Rehabilitation on Activity Levels in Patients With Chronic Obstructive Pulmonary Disease

Standardizing the Analysis of Physical Activity in Patients With COPD Following a Pulmonary Rehabilitation Program

Physical Activity as a Predictor of Absence of Frailty in Subjects With Stable COPD and COPD Exacerbation

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