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Updated: Mar 8, 2026

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Published on: March 7, 2019

Comparing accelerometer, pedometer and a questionnaire for measuring physical activity in bronchiectasis: a validity

B O'Neill¹, S M McDonough^1,2, J J Wilson^2,3

¹Centre for Health and Rehabilitation Technologies, Institute for Nursing and Health Research, Ulster University, Newtownabbey, UK.

Respiratory Research

|January 16, 2017

Summary

This summary is machine-generated.

Accurate physical activity measurement in Bronchiectasis (BE) is feasible. ActiGraph or pedometers are suitable for step counts, but ActiGraph better captures activity intensity and walking time, unlike the IPAQ.

Keywords:

Actigraph Bronchiectasis Pedometer Physical activity measurement Step count

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Area of Science:

Pulmonary Medicine
Exercise Physiology
Biomedical Engineering

Background:

Assessing physical activity in Bronchiectasis (BE) presents challenges due to the need for precise yet feasible tools.
Current literature lacks clarity on the optimal physical activity assessment method for BE patients.
This study aims to evaluate different physical activity measurement tools in BE.

Purpose of the Study:

To compare the ActiGraph (criterion method) with pedometers and the International Physical Activity Questionnaire (IPAQ) for measuring physical activity dimensions in BE.
To assess the feasibility and acceptability of these assessment tools among BE patients and researchers.

Main Methods:

A cross-sectional study involving 55 BE patients who simultaneously used ActiGraph, pedometers, and IPAQ for seven consecutive days.
Statistical analysis included descriptive statistics and calculation of percentage agreement using limits of agreement.
Feasibility and acceptability feedback was collected from participants and researchers regarding the activity monitors and IPAQ.

Main Results:

ActiGraph and pedometers showed no significant difference in step count but ActiGraph recorded significantly more total physical activity time.
IPAQ significantly overestimated moderate-to-vigorous physical activity (MVPA) and underestimated sedentary time compared to ActiGraph, with low agreement levels.
Activity monitors were feasible and acceptable; IPAQ was acceptable but often required patient assistance.

Conclusions:

Accurate physical activity measurement is feasible in BE and crucial for future intervention trials.
ActiGraph is recommended for measuring physical activity intensity and walking time in BE, while pedometers are suitable for step counts.
The IPAQ is not considered an accurate measure of physical activity in the Bronchiectasis population.