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Influence of Step-Width Manipulation on Running Biomechanics
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Revisiting "how many steps are enough?".

Catrine Tudor-Locke1, Yoshiro Hatano, Robert P Pangrazi

  • 1Walking Behavior Laboratory, Pennington Biomedical Research Center, Baton Rogue, LA 70808, USA. Catrine.Tudor-Locke@pbrc.edu

Medicine and Science in Sports and Exercise
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Summary

Evidence-based pedometer guidelines are needed for physical activity (PA) measurement and motivation. This review updates understanding of dose-response relationships for pedometer-determined PA, proposing activity zones for adults.

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Area of Science:

  • Public Health
  • Exercise Science
  • Biomedical Measurement

Background:

  • Pedometer use is widespread in research and practice for physical activity (PA) assessment.
  • Standardized, evidence-based steps/day indices are crucial for public health applications.
  • Current industry standards for pedometer quality control are limited, with Japan being a notable exception.

Purpose of the Study:

  • To review, update, and extend the understanding of dose-response relationships for pedometer-determined PA.
  • To establish evidence-based steps/day indices for measurement and motivation in public health.
  • To propose a zone-based hierarchy for classifying adult activity levels.

Main Methods:

  • Review of existing literature on pedometer-determined physical activity and dose-response relationships.
  • Analysis of adult public health guidelines for moderate-intensity PA and translation to steps/day.
  • Development of a zone-based hierarchy for classifying activity levels based on steps/day.

Main Results:

  • Public health guidelines of >=30 minutes of moderate-intensity PA translate to 3000-4000 steps/day under specific conditions.
  • A proposed zone-based hierarchy for adults: sedentary (<5000), low active (5000-7499), somewhat active (7500-9999), active (10,000-12,499), and highly active (>=12,500 steps/day).
  • Emerging evidence supports youth-specific cutoffs, and criterion-referenced approaches show promise for advancing standards.

Conclusions:

  • Evidence-based steps/day indices are essential for effective pedometer use in public health.
  • The proposed zone-based hierarchy provides a framework for measurement and motivation.
  • Consideration of the motivational impact of unattainable goals is important when implementing evidence-based cutoffs.