THE EFFECTS OF BACKPACK LOADING STYLES ON ENERGY EXPENDITURE AND MOVEMENT IN THE SAGITTAL PLANE DURING TREADMILL WALKING

  • Kathryn Cole
  • Philipp B. Watts
  • Randall L. Jensen
  • Cheryl E. Teeters
Keywords: load carriage, physiology, kinematics

Abstract

Backpacking is physically demanding on the body. Although much of the load is carried securely inside the pack, non-secure attachment of provisions is commonly practiced. The purpose of this study was to analyze the effects of a non-secure loading style as compared to a secure loading style of a backpack. Fifteen male subjects walked on a treadmill for 10 minutes in four conditions: 2% grade secure and non-secure and 15% grade secure and non-secure. Expired air analysis and movement in the sagittal plane were analyzed. A two-way (pack by grade) ANOVA for energy expenditure yielded significant differences for grade: one minute averages (p < .001), over the each condition (p < .001), and over an estimated 60 minute interval (p = .675). No other energy expenditure differences and no sagittal plane movement differences were found.
Published
2007-10-28
Section
Coaching and Sports Activities