Comprehensive evaluation of a single-stage submaximal treadmill walking protocol in healthy, middle-aged women

Melanie Mitros, Kelley Pettee Gabriel, Barbara Ainsworth, Chong Lee, Stephen Herrmann, Kathy Campbell, Pamela Swan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Cardiorespiratory fitness is an independent predictor of cardiovascular events in women; however, maximal oxygen consumption (VO 2max) protocols are not always feasible. The Evaluation of Physical Activity Measures in Middle-Aged Women Study was a 6-week study designed to evaluate six physical activity (PA) measures in women, aged 45-65 years. We investigated the Ebbeling submaximal treadmill (EbbTM) protocol's ability to reflect an active lifestyle in 66 women [median (IQR) age, 51.0 (48.0, 56.5) years]. Participants were screened using ACSM and AHA guidelines and classified as moderate or low cardiovascular risk. VO 2max was estimated using the EbbTM in all participants (TEST1). Moderate risk women repeated the EbbTM (TEST2) while low risk completed a maximal treadmill test. Intraclass correlation coefficients (ICC) and minimal detectable change (MDC 90) score were calculated to examine reliability. Spearman rank order or Pearson product-moment correlation coefficients were used to determine the association between estimated VO 2max and physical fitness and activity measures. Estimated VO 2max from the EbbTM protocol had excellent reproducibility [ICC = 0.95 (95% CI: 0.89, 0.98) and MDC 90 was 1.62 mL kg -1 min -1. The EbbTM protocol was associated with measured VO 2max (ρ = 0.48; ρ = 0.01) and was positively correlated with moderate- (ρ = 0.32; ρ = 0.02), vigorous- (ρ = 0.47; ρ = 0.0005) and moderate-to-vigorous-intensity PA (ρ = 0.36; ρ = 0.009), pedometer steps (ρ = 0.41; ρ = 0.002) and inversely correlated with waist circumference (ρ = -0.58; ρ < 0.0001), body fat (ρ = -0.55; ρ < 0.0001), and right leg endurance (ρ = -0.41; ρ = 0.003). The EbbTM protocol was shown to be reliable and associated with objective measures of fitness and PA in healthy, middle-aged women.

Original languageEnglish (US)
Pages (from-to)47-56
Number of pages10
JournalEuropean Journal of Applied Physiology
Volume111
Issue number1
DOIs
StatePublished - Jan 2011

Fingerprint

Walking
Exercise
Aptitude
Physical Fitness
Waist Circumference
Exercise Test
Oxygen Consumption
Adipose Tissue
Life Style
Leg
Guidelines

Keywords

  • Cardiorespiratory fitness
  • Estimated oxygen consumption
  • Female
  • Reliability
  • Validity

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Orthopedics and Sports Medicine
  • Physiology (medical)

Cite this

Comprehensive evaluation of a single-stage submaximal treadmill walking protocol in healthy, middle-aged women. / Mitros, Melanie; Gabriel, Kelley Pettee; Ainsworth, Barbara; Lee, Chong; Herrmann, Stephen; Campbell, Kathy; Swan, Pamela.

In: European Journal of Applied Physiology, Vol. 111, No. 1, 01.2011, p. 47-56.

Research output: Contribution to journalArticle

Mitros, Melanie ; Gabriel, Kelley Pettee ; Ainsworth, Barbara ; Lee, Chong ; Herrmann, Stephen ; Campbell, Kathy ; Swan, Pamela. / Comprehensive evaluation of a single-stage submaximal treadmill walking protocol in healthy, middle-aged women. In: European Journal of Applied Physiology. 2011 ; Vol. 111, No. 1. pp. 47-56.
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