The effect of stride frequencies on running performance at the velocity of VO2max

Author

Boram LimFollow

Graduation Date

Spring 2018

Document Type

Project

Program

Master of Science degree with a major in Kinesiology, option Exercise Science

Committee Chair Name

Dr. Young Sub Kwon

Committee Chair Affiliation

HSU Faculty or Staff

Second Committee Member Name

Dr. Justus D. Ortega

Second Committee Member Affiliation

HSU Faculty or Staff

Third Committee Member Name

Dr. Boe M. Burrus

Third Committee Member Affiliation

HSU Faculty or Staff

Keywords

Stride frequency, Treadmill running, Running performance, Maximizing performance, 1.5-mile run test, Peripheral fatigue, Central fatigue

Subject Categories

Kinesiology

Abstract

Running economy(RE) is considered to be a critical factor to improve running performance. Stride frequency(SF) is an important variable for determining RE. The importance of SF has gained more attention in recent years, especially for recreational runners. However, no previous research has investigated the interaction between running performance and SF at the velocity of VO₂max. PURPOSE: To investigate the effect of five different SF variations on running performance until volitional fatigue at the velocity of VO₂max. METHODS: Fourteen male recreational runners (Age = 25.8 ± 4.96 years, Height = 171 ± 6.2cm, Body Mass = 71.9 ± 7.5kg) measured VO₂max (54 ± 5.6 ml/kg/min) and preferred stride frequency (PSF; 89.3 ± 4 / min) through a graded exercise test (GXT) and running session, respectively. Running speed was determined based on each individual’s VO₂max via the metabolic equation for gross VO₂ in metric units by ACSM. Participants ran on the treadmill (0% grade) with five SF conditions (PSF, ±5%, ±10%) until time to exhaustion. Data were analyzed using a one way ANOVA with repeated measures and Tukey HSD post hoc. RESULTS: The total running performance (time, distance), energy expenditures (kcal), and oxygen consumption (VO₂) were statistically significant among SF variations (pE) were no statistically significant (p>0.05). CONCLUSION: The SF variations have a significant influence on running performance. The relationship between SF variations and other variables (RER, RR, V_E) were possibly related to the central governor theory to delay the onset of fatigue. These results suggest that recreational runners could use a 105% of PSF to improve running performance with the better RE.

Citation Style

Following a specific journal guideline (MSSE;http://edmgr.ovid.com/msse/accounts/ifauth.htm)

Recommended Citation

Lim, Boram, "The effect of stride frequencies on running performance at the velocity of VO2max" (2018). Cal Poly Humboldt theses and projects. 133.
https://digitalcommons.humboldt.edu/etd/133