Division of Health, Engineering, Computing and Science, Te Huataki Waiora School of Health, University of Waikato, Mount Maunganui, Tauranga 3116, New Zealand.
Division of Health, Engineering, Computing and Science, Te Huataki Waiora School of Health, University of Waikato, Mount Maunganui, Tauranga 3116, New Zealand.
J Sport Health Sci. 2022 May;11(3):275-284. doi: 10.1016/j.jshs.2020.11.012. Epub 2020 Nov 29.
We compared running economy (RE) and 3-km time-trial (TT) variables of runners wearing Nike Vaporfly 4% (VP4), Saucony Endorphin lightweight racing flats (FLAT), and their habitual running (OWN) footwear.
Eighteen male recreational runners (age = 33.5 ± 11.9 year (mean ± SD), peak oxygen uptake (VO) = 55.8 ± 4.4 mL/kg·min) attended 4 sessions approximately 7 days apart. The first session consisted of a VO test to inform subsequent RE speeds set at 60%, 70%, and 80% of the speed eliciting VO. In subsequent sessions, treadmill RE and 3-km TTs were assessed in the 3 footwear conditions in a randomized, counterbalanced crossover design.
Oxygen consumption (mL/kg·min) was less in VP4 (from 4.3% to 4.4%, p ≤ 0.002) and FLAT (from 2.7% to 3.4%, p ≤ 0.092) vs. OWN across intensities, with a non-significant difference between VP4 and FLAT (1.0%-1.7%, p ≥ 0.292). Findings related to energy cost (W/kg) and energetics cost of transport (J/kg·m) were comparable. VP4 3-km TT performance (11:07.6 ± 0:56.6 mm:ss) was enhanced vs. OWN by 16.6 s (2.4%, p = 0.005) and vs. FLAT by 13.0 s (1.8%, p = 0.032). The 3-km times between OWN and FLAT (0.5%, p = 0.747) were similar. Most runners (n = 11, 61%) ran their fastest TT in VP4.
Overall, VP4 improved laboratory-based RE measures in male recreational runners at relative speeds compared to OWN, but the RE improvements in VP4 were not significant vs. FLAT. More runners exhibited better treadmill TT performances in VP4 (61%) vs. FLAT (22%) and OWN (17%). The variability in RE (-10.3% to 13.3%) and TT (-4.7% to 9.3%) improvements suggests that responses to different types of shoes are individualized and warrant further investigation.
我们比较了穿着 Nike Vaporfly 4%（VP4）、Saucony Endorphin 轻量级跑鞋（FLAT）和他们习惯穿的跑鞋（OWN）的跑步者的跑步经济（RE）和 3 公里计时跑（TT）变量。
18 名男性休闲跑步者（年龄=33.5±11.9 岁（均值±标准差），峰值摄氧量（VO）=55.8±4.4 mL/kg·min）参加了 4 次大约相隔 7 天的测试。第一次测试是 VO 测试，以确定随后的 RE 速度，设定为 60%、70%和 80%的速度引发 VO。在随后的测试中，以随机、交叉平衡的方式在 3 种鞋类条件下评估跑步机 RE 和 3 公里 TT。
在所有强度下，VP4（从 4.3%到 4.4%，p≤0.002）和 FLAT（从 2.7%到 3.4%，p≤0.092）的耗氧量（mL/kg·min）均低于 OWN，VP4 和 FLAT 之间的差异无统计学意义（1.0%-1.7%，p≥0.292）。与能量消耗（W/kg）和能量传递的能耗（J/kg·m）相关的发现是相似的。VP4 的 3 公里 TT 成绩（11:07.6±0:56.6 mm:ss）比 OWN 提高了 16.6 秒（2.4%，p=0.005），比 FLAT 提高了 13.0 秒（1.8%，p=0.032）。OWN 和 FLAT 之间的 3 公里时间（0.5%，p=0.747）相似。大多数跑步者（n=11，61%）在 VP4 中跑出了最快的 TT。
总体而言，VP4 提高了男性休闲跑步者在相对速度下的实验室 RE 测量值，与 OWN 相比，但与 FLAT 相比，RE 的提高并不显著。更多的跑步者在 VP4（61%）和 FLAT（22%）和 OWN（17%）中表现出更好的跑步机 TT 成绩。RE（-10.3%到 13.3%）和 TT（-4.7%到 9.3%）改善的变异性表明，对不同类型鞋子的反应是个体化的，需要进一步研究。
