Metabolic and biomechanical variables of two incline conditions during distance running

Medicine and Science in Sports and Exercise
R M KleinC J Zebas

Abstract

The purpose of this experiment was to examine the effects of an incline during distance running on selected metabolic and biomechanical variables. Six (4 males, 2 females) trained distance runners (age 27.2 +/- 7.8 yr; VO2max 63.7 +/- 7.5 mL x kg-1 x min-1) performed three 35-min runs at speeds corresponding to each individual's anaerobic threshold. The first run (Control) was performed at 0% grade. The remaining two runs were randomly assigned and included a 5% incline during min 5-15 (Run A) or 20-30 (Run B). Heart rate via telemetry (HR), and oxygen consumption (VO2), minute ventilation (VE), RER, and tidal volume (TV) were measured by indirect calorimetry. High speed videography was used to measure time in support phase, time in swing phase, step length, trunk lean, vertical oscillation of the hip, knee flexion in support, shank angle during toe-off, and ankle flexion at heel strike during the runs. Significant increases (P < or = 0.05) were found during the incline conditions of Run A for VO2 (+18%) HR (+11%), VE (+24%), and RER (+8%) and Run B for VO2 (+19%) HR (+10%), and VE (+25%) compared with the Control. No significant differences (P > 0.05) were noted between Run A and Run B during incline running in the physiologic...Continue Reading

References

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Citations

Apr 4, 2003·Medicine and Science in Sports and Exercise·Bryant L Sih, James H Stuhmiller
Sep 17, 2020·The Journal of Sports Medicine and Physical Fitness·Francesca NardelloFederico Schena
May 27, 2011·The Journal of Experimental Biology·Kristine L Snyder, Claire T Farley
Jan 18, 2005·Journal of Biomechanics·Jinger S Gottschall, Rodger Kram

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