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Comparing Accelerometer and Self-Reported Treatment Effects in a Technology-Supported Physical Activity Intervention

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Title: Comparing Accelerometer and Self-Reported Treatment Effects in a Technology-Supported Physical Activity Intervention
Language: English
Authors: Welch, Whitney A. (ORCID 0000-0002-1420-3090), Groth, Caroline P., Phillips, Siobhan M., Spring, Bonnie, Siddique, Jun
Source: Health Education & Behavior. Feb 2021 48(1):34-41.
Availability: SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com
Peer Reviewed: Y
Page Count: 8
Publication Date: 2021
Sponsoring Agency: National Institutes of Health (DHHS)
Contract Number: R01HL075451
R01HL127491
R01HL121606
K07CA196840
Document Type: Journal Articles
Reports - Research
Descriptors: Measurement Equipment, Measurement Techniques, Intervention, Outcomes of Treatment, Physical Activities, Physical Activity Level, Health Behavior, Eating Habits, Adults, Program Effectiveness, Handheld Devices, Data Collection
DOI: 10.1177/1090198120971194
ISSN: 1090-1981
Abstract: Background and Aims: To estimate and compare the change in moderate-to-vigorous physical activity (MVPA) between an accelerometer and technology-supported physical activity (PA) log across a 3-week PA intervention. Method: Participants (N = 204, 77% female, age = 33 ± 11 years, body mass index = 28.2 ± 7.1 kg/m[superscript 2]) were randomized to one of two activity-related intervention arms--(1) increase MVPA intervention or (2) decrease sedentary behavior active control. Participants wore an accelerometer while simultaneously completing a technology-based PA log every day for 5 weeks: a 2-week baseline assessment phase and a 3-week intervention phase. Bivariate linear mixed-effects models and correlations were used to characterize the relationship of MVPA between measurement methods throughout the intervention. Effect sizes were calculated to determine the intervention effect by measurement method. Results: At baseline, PA log MVPA was 28 minutes greater than accelerometer-based minutes of MVPA in the active control group. This difference was 35 minutes (95% CI [23.7, 46.1]) greater at follow-up than at baseline measurement in the MVPA intervention group. In the active control group, there was a significant 16-minute (95% CI [6.0, 26.5]) increase between the two measures from baseline to follow-up. The intervention effect size based on the PA log was 0.27 (95% CI [0.14, 0.39]) and 0.42 (95% CI [0.28, 0.56]) when using the accelerometer. Discussion and Conclusions: Our results indicate that PA log MVPA and accelerometer MVPA estimate significantly different minutes per day of MVPA. It is important researchers use caution when comparing MVPA intervention outcomes from different measurement methods.
Abstractor: As Provided
Entry Date: 2021
Accession Number: EJ1281664
Database: ERIC
FullText Text:
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PubType: Academic Journal
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  Data: Comparing Accelerometer and Self-Reported Treatment Effects in a Technology-Supported Physical Activity Intervention
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  Data: <searchLink fieldCode="AR" term="%22Welch%2C+Whitney+A%2E%22">Welch, Whitney A.</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-1420-3090">0000-0002-1420-3090</externalLink>)<br /><searchLink fieldCode="AR" term="%22Groth%2C+Caroline+P%2E%22">Groth, Caroline P.</searchLink><br /><searchLink fieldCode="AR" term="%22Phillips%2C+Siobhan+M%2E%22">Phillips, Siobhan M.</searchLink><br /><searchLink fieldCode="AR" term="%22Spring%2C+Bonnie%22">Spring, Bonnie</searchLink><br /><searchLink fieldCode="AR" term="%22Siddique%2C+Jun%22">Siddique, Jun</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22Health+Education+%26+Behavior%22"><i>Health Education & Behavior</i></searchLink>. Feb 2021 48(1):34-41.
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  Data: SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com
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  Data: <searchLink fieldCode="DE" term="%22Measurement+Equipment%22">Measurement Equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Measurement+Techniques%22">Measurement Techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Intervention%22">Intervention</searchLink><br /><searchLink fieldCode="DE" term="%22Outcomes+of+Treatment%22">Outcomes of Treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+Activities%22">Physical Activities</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+Activity+Level%22">Physical Activity Level</searchLink><br /><searchLink fieldCode="DE" term="%22Health+Behavior%22">Health Behavior</searchLink><br /><searchLink fieldCode="DE" term="%22Eating+Habits%22">Eating Habits</searchLink><br /><searchLink fieldCode="DE" term="%22Adults%22">Adults</searchLink><br /><searchLink fieldCode="DE" term="%22Program+Effectiveness%22">Program Effectiveness</searchLink><br /><searchLink fieldCode="DE" term="%22Handheld+Devices%22">Handheld Devices</searchLink><br /><searchLink fieldCode="DE" term="%22Data+Collection%22">Data Collection</searchLink>
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  Data: 10.1177/1090198120971194
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  Data: 1090-1981
– Name: Abstract
  Label: Abstract
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  Data: Background and Aims: To estimate and compare the change in moderate-to-vigorous physical activity (MVPA) between an accelerometer and technology-supported physical activity (PA) log across a 3-week PA intervention. Method: Participants (N = 204, 77% female, age = 33 ± 11 years, body mass index = 28.2 ± 7.1 kg/m[superscript 2]) were randomized to one of two activity-related intervention arms--(1) increase MVPA intervention or (2) decrease sedentary behavior active control. Participants wore an accelerometer while simultaneously completing a technology-based PA log every day for 5 weeks: a 2-week baseline assessment phase and a 3-week intervention phase. Bivariate linear mixed-effects models and correlations were used to characterize the relationship of MVPA between measurement methods throughout the intervention. Effect sizes were calculated to determine the intervention effect by measurement method. Results: At baseline, PA log MVPA was 28 minutes greater than accelerometer-based minutes of MVPA in the active control group. This difference was 35 minutes (95% CI [23.7, 46.1]) greater at follow-up than at baseline measurement in the MVPA intervention group. In the active control group, there was a significant 16-minute (95% CI [6.0, 26.5]) increase between the two measures from baseline to follow-up. The intervention effect size based on the PA log was 0.27 (95% CI [0.14, 0.39]) and 0.42 (95% CI [0.28, 0.56]) when using the accelerometer. Discussion and Conclusions: Our results indicate that PA log MVPA and accelerometer MVPA estimate significantly different minutes per day of MVPA. It is important researchers use caution when comparing MVPA intervention outcomes from different measurement methods.
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