Journal of Behavioral Health and Psychology. 2017; 6(4):(219-318)


Accuracy of the ActiGraph GT9X Inclinometer to assess human body postures

Paul D. Loprinzi, Brandee Smith

Abstract

Objective: Accelerometer-determined physical activity, sedentary behavior, and energy expenditure estimation may be influenced by the accuracy of accelerometer-assessed inclinometer. The purpose of this study is to examine the accuracy of the ActiGraph GT9X (most recent ActiGraph model) inclinometer across participant body habitus, and in particular, differences in central adiposity. Methods: Eighteen participants (Mage = 21.5 years) completed a series of 11 consecutive activities that varied in both movement (i.e., no movement, walking, and pedaling) and anatomic position (i.e., lying, sitting, and standing). During the trials, the participants wore an ActiGraph GT9X accelerometer and direct observation is used to compare body position determination derived from the ActiGraph GT9X inclinometer. Results: The ActiGraph GT9X inclinometer demonstrated moderate accuracy (>68%) in body position determination for sedentary behaviors, high accuracy (>95%) in body position determination for ambulatory-based activities (e.g., walking and jogging), and had varied accuracy (100% vs. 32.1%) in identifying non-wear. Conclusion: The exclusive use of inclinometry for sedentary behavior and non-wear determination is not recommended.

Most Viewed Article
  • Using Social Media Engagement to Raise Pre-Diabetes Awareness for Rural Idaho Hispanics or Latinos
    Tanna M. Woods PhD MSN RN, Heidi K. Lewis DNP RN and Mary A. Nies PhD RN FAAN FAAHB
    » Abstract » doi: 10.5455/jbh.XXXXXX

  • Evaluating the Gap of Integrated Behavioral Health Programs for NCDs in China, Vietnam, Cambodia, and Thailand
    Ronald R. O’Donnell, Jennifer Rolfes, Shiyou Wu, Mohamed Abdalla, Flavio F. Marsiglia, Pristine Mei, Pham Le An, Puchong Senanuch, Patraporn Tungpunkom, Virya Koy, Hong Tao, Kim Savuon and Rodger Kessler
    » Abstract » doi: 10.33425/2832-4579/21038

  • Occupational Therapy Assessment and Intervention of a 22 Month Old Girl with Feeding Refusal
    Berta Gándara-Gafo PhD, Tania Moriyón-Iglesias MSc and Isabelle Beaudry-Bellefeuille PhD
    » Abstract » doi: 10.33425/2832-4579/21037

  • Biological sex and Covid-19: Science versus ideology
    Carole Jahme and Ulrich Kutschera
    » Abstract » doi: 10.33425/2832-4579/21036

  • A case of chronic schizophrenia with emergent dementia: Successful medication reduction and its explication
    Grace E Jackson and Matthew Tunzi
    » Abstract » doi: 10.33425/2832-4579/21035

Most Downloaded
  • Using Social Media Engagement to Raise Pre-Diabetes Awareness for Rural Idaho Hispanics or Latinos
    Tanna M. Woods PhD MSN RN, Heidi K. Lewis DNP RN and Mary A. Nies PhD RN FAAN FAAHB
    » Abstract » doi: 10.5455/jbh.XXXXXX

  • Evaluating the Gap of Integrated Behavioral Health Programs for NCDs in China, Vietnam, Cambodia, and Thailand
    Ronald R. O’Donnell, Jennifer Rolfes, Shiyou Wu, Mohamed Abdalla, Flavio F. Marsiglia, Pristine Mei, Pham Le An, Puchong Senanuch, Patraporn Tungpunkom, Virya Koy, Hong Tao, Kim Savuon and Rodger Kessler
    » Abstract » doi: 10.33425/2832-4579/21038

  • Occupational Therapy Assessment and Intervention of a 22 Month Old Girl with Feeding Refusal
    Berta Gándara-Gafo PhD, Tania Moriyón-Iglesias MSc and Isabelle Beaudry-Bellefeuille PhD
    » Abstract » doi: 10.33425/2832-4579/21037

  • Biological sex and Covid-19: Science versus ideology
    Carole Jahme and Ulrich Kutschera
    » Abstract » doi: 10.33425/2832-4579/21036

  • A case of chronic schizophrenia with emergent dementia: Successful medication reduction and its explication
    Grace E Jackson and Matthew Tunzi
    » Abstract » doi: 10.33425/2832-4579/21035