Cochrum Robbie G, Connors Ryan T, Coons John M, Fuller Dana K, Morgan Don W, Caputo Jennifer L
1Exercise Science Laboratory, Department of Health and Human Performance, Middle Tennessee State University, Murfreesboro, Tennessee; and2Department of Psychology, Middle Tennessee State University, Murfreesboro, Tennessee.
J Strength Cond Res. 2017 Mar;31(3):595-601. doi: 10.1519/JSC.0000000000000892.
Cochrum, RG, Connors, RT, Coons, JM, Fuller, DK, Morgan, DW, and Caputo, JL. Comparison of running economy values while wearing no shoes, minimal shoes, and normal running shoes. J Strength Cond Res 31(3): 595-601, 2017-The purpose of this study was to quantify differences in running economy (RE) at 50 and 70% of each subject's velocity at V[Combining Dot Above]O2max (vV[Combining Dot Above]O2max) across barefoot and 2 mass, stack height, and heel-to-toe-drop controlled footwear conditions (minimal shoes and normal running shoes) in 9 recreational distance runners (mean age 26.8 ± 6.8 years). Over 3 days, subjects ran in one of the footwear conditions while RE (oxygen consumption) and step frequency were measured at each speed with a 5-minute rest between each trial. A 2-way repeated-measures multivariate analysis of variance (p ≤ 0.05) and Bonferroni-adjusted follow-up analyses revealed that RE was not significantly different across footwear conditions at either speed. However, those running barefoot exhibited a higher step frequency than when running in minimal (50%, p = 0.007; and 70%, p < 0.001) and standard footwear conditions (70% only, p < 0.001). Higher step frequencies were also exhibited by those running in minimal versus standard footwear (70% only, p = 0.007). Thus, RE is not affected by footwear or running barefoot in those with experience running in minimal-type footwear. Significant adjustments in step frequency when alternative footwear was introduced may help explain why RE was statistically maintained during each footwear and speed condition across but not between subjects. Therefore, determination of footwear for the enhancement of RE should be based on individual physical characteristics and preferences rather than a global recommendation of an economical running shoe.
科克伦、RG、康纳斯、RT、库恩斯、JM、富勒、DK、摩根、DW和卡普托、JL。不穿鞋、穿极简跑鞋和普通跑鞋时跑步经济性值的比较。《力量与体能研究杂志》31(3):595 - 601，2017年——本研究的目的是量化9名休闲长跑运动员（平均年龄26.8±6.8岁）在赤足以及两种质量、堆叠高度和后跟到脚尖落差可控的鞋类条件（极简跑鞋和普通跑鞋）下，以各自最大摄氧量速度（vV̇O₂max）的50%和70%跑步时的跑步经济性（RE）差异。在3天时间里，受试者穿着其中一种鞋类条件跑步，同时在每个速度下测量RE（耗氧量）和步频，每次试验之间休息5分钟。双向重复测量多变量方差分析（p≤0.05）和经邦费罗尼校正的后续分析表明，在两种速度下，不同鞋类条件下的RE均无显著差异。然而，赤足跑步者的步频高于穿极简跑鞋（50%时，p = 0.007；70%时，p < 0.001）和标准跑鞋条件（仅70%时，p < 0.001）时。穿极简跑鞋跑步者的步频也高于穿标准跑鞋者（仅70%时，p = 0.007）。因此，对于有穿极简型鞋类跑步经验的人来说，RE不受鞋类或赤足跑步的影响。引入替代鞋类时步频的显著调整可能有助于解释为什么在每个鞋类和速度条件下，RE在受试者之间而非受试者内部在统计学上得以维持。因此，确定用于提高RE的鞋类应基于个人身体特征和偏好，而不是对经济适用跑鞋的普遍推荐。
