Metabolic cost of level,uphill,and downhill running in highly cushioned shoes with carbon-fiber plates

作     者：Clarissa S.Whiting Wouter Hoogkamer Rodger Kram Clarissa S.Whiting;Wouter Hoogkamer;Rodger Kram

作者机构：Locomotion LaboratoryDepartment of Integrative PhysiologyUniversity of ColoradoBoulderCO 80309USA Integrative Locomotion LabDepartment of KinesiologyUniversity of MassachusettsAmherstMA 01003USA 

出 版 物：《Journal of Sport and Health Science》 (运动与健康科学（英文）)

年 卷 期：2022年第11卷第3期

页      面：303-308页

核心收录：

学科分类：0403[教育学-体育学] 04[教育学] 

基　　金：We thank Jackson Brill Ross Wilkinson Kyle Sterns and James Tripp Hurt for help with recruiting and testing and Alena Grabowski for loaning us her Parvo system while ours was on the fritz.The running shoes used for this study were provided by Nike 

主　　题：Energetics Incline Locomotion Oxygen consumption Running economy 

摘      要：Background:Compared to conventional racing shoes,Nike Vaporfly 4% running shoes reduce the metabolic cost of level treadmill running by4%.The reduction is attributed to their lightweight,highly compliant,and resilient midsole foam and a midsole-embedded curved carbon-fiber *** investigated whether these shoes also could reduce the metabolic cost of moderate uphill(+3°) and downhill(-3°) *** tested the null hypothesis that,compared to conventional racing shoes,highly cushioned shoes with carbon-fiber plates would impart the same ~4%metabolic power(W/kg) savings during uphill and downhill running as they do during level ***:After familiarization,16 competitive male runners performed six 5-min trials(2 shoes × 3 grades) in 2 Nike marathon racing-shoe models(Streak 6 and Vaporfly 4%) on a level,uphill(+3°),and downhill(-3°) treadmill at 13 km/h(3.61 m/s).We measured submaximal oxygen uptake and carbon dioxide production during Minutes 4-5 and calculated metabolic power(W/kg) for each shoe model and grade ***:Compared to the conventional shoes(Streak 6),the metabolic power in the Vaporfly 4% shoes was 3.83%(level),2.82%(uphill),and2.70%(downhill)less(all p 0.001).The percent of change in metabolic power for uphill running was less compared to level running(p=0.04;effect size(ES)=0.561) but was not statistically different between downhill and level running(p=0.17;ES=0.356).Conclusion:On a running course with uphill and downhill sections,the metabolic savings and hence performance enhancement provided by Vaporfly 4% shoes would likely be slightly less overall,compared to the savings on a perfectly level race course.