Validation of the actical activity monitor in middle-aged and older adults

Steven P. Hooker, Anna Feeney, Brent Hutto, Karin A. Pfeiffer, Kerry McIver, Daniel P. Heil, John E. Vena, Michael J. LaMonte, Steven N. Blair

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Purpose: This study was designed to validate the Actical activity monitor in middle-aged and older adults of varying body composition to develop accelerometer thresholds to distinguish between light and moderate intensity physical activity (PA). Methods: Nonobese 45 to 64 yr (N = 29), obese 45 to 64 yr (N = 21), and ≥65 yr (N = 23; varying body composition) participants completed laboratory-based sitting, household, and locomotive activities while wearing an Actical monitor and a portable metabolic measurement system. Nonlinear regression analysis was used to identify activity count (AC) cut-points to differentiate between light intensity (<3 METs) and moderate intensity (≥3METs) PA. Results: Using group-specific algorithms, AC cut points for 3 METs were 1634, 1107, and 431 for the obese 45 to 64 yr group, nonobese 45 to 64 yr group, and ≥65 yr group, respectively. However, sensitivity and specificity analysis revealed that an AC cut-point of 1065 yielded similar accuracy for detecting an activity as less than or greater than 3 METs, regardless of age and body composition. Conclusion: For the Actical activity monitor, an AC cut-point of 1065 can be used to determine light and moderate intensity PA in people ≥45 years of age.

Original languageEnglish (US)
Pages (from-to)372-381
Number of pages10
JournalJournal of Physical Activity and Health
Volume8
Issue number3
StatePublished - Mar 2011
Externally publishedYes

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Body Composition
Light
Regression Analysis
Sensitivity and Specificity

Keywords

  • Accelerometer
  • Assessment
  • Obesity
  • Physical activity

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Hooker, S. P., Feeney, A., Hutto, B., Pfeiffer, K. A., McIver, K., Heil, D. P., ... Blair, S. N. (2011). Validation of the actical activity monitor in middle-aged and older adults. Journal of Physical Activity and Health, 8(3), 372-381.

Validation of the actical activity monitor in middle-aged and older adults. / Hooker, Steven P.; Feeney, Anna; Hutto, Brent; Pfeiffer, Karin A.; McIver, Kerry; Heil, Daniel P.; Vena, John E.; LaMonte, Michael J.; Blair, Steven N.

In: Journal of Physical Activity and Health, Vol. 8, No. 3, 03.2011, p. 372-381.

Research output: Contribution to journalArticle

Hooker, SP, Feeney, A, Hutto, B, Pfeiffer, KA, McIver, K, Heil, DP, Vena, JE, LaMonte, MJ & Blair, SN 2011, 'Validation of the actical activity monitor in middle-aged and older adults', Journal of Physical Activity and Health, vol. 8, no. 3, pp. 372-381.
Hooker SP, Feeney A, Hutto B, Pfeiffer KA, McIver K, Heil DP et al. Validation of the actical activity monitor in middle-aged and older adults. Journal of Physical Activity and Health. 2011 Mar;8(3):372-381.
Hooker, Steven P. ; Feeney, Anna ; Hutto, Brent ; Pfeiffer, Karin A. ; McIver, Kerry ; Heil, Daniel P. ; Vena, John E. ; LaMonte, Michael J. ; Blair, Steven N. / Validation of the actical activity monitor in middle-aged and older adults. In: Journal of Physical Activity and Health. 2011 ; Vol. 8, No. 3. pp. 372-381.
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