Elite Athletes Hydration Profile And Renal Stress During Pan American (2019) And Olympic (2020) Games

Abstract

PURPOSE:Although maximal cushioning shoes are popular among recreational runners, few studies have assessed the effects of shoe type on running economy, and fewer have observed the influence of footwear condition on females. Therefore, this pilot study aims to investigate the effects of shoe type on running economy in female runners. METHODS: Participants (age: 21) reported to Whittier College's Human Movement Laboratory twice. During the first testing session, participants completed a VO 2MAX test using a CosMed T-150 treadmill and Cardiopulmonary Exercise Test (CPET) to determine baseline values. On the second visit, participants ran two 15-minute bouts at 70% of their VO 2max . Participants wore their own shoes (OS) for one bout, and a maximalist (MAX) lab shoe for the other. The order of footwear conditions was counterbalanced. Paired samples t-tests will assess differences in oxygen consumption, respiratory quotient, and rate of perceived exertion between shoe type (α=0.05). RESULTS: Analysis of preliminary data suggest oxygen consumption does not differ between footwear conditions (MAX: 31.99 ± 3.78 ml/kg/min, OS: 31.48 ± 3.78 ml/kg/min). Additionally, RQ and RPE did not differ between the MAX shoe (RQ: 0.90 ± 0.04; RPE: 12.93 ± 2.76) and OS (RQ: 0.91 ± 0.03; RPE: 12.57 ± 1.91). CONCLUSIONS: Based on preliminary data, shoe type may not affect running economy in female runners. A more complete analysis of the influence of footwear on running economy will occur as the data collection increases to the target sample size. If changes in running economy occur, the results of this study may determine if those changes are due to habituation or perturbation. In addition, this study's data regarding running economy may be beneficial for footwear development and consumer decision-making specifically for female runners.