Four weeks habituation to simulated barefoot running improves running economy when compared to shod running
Warne, Joe & Warrington, Giles. (2012).
Scandinavian journal of medicine & science in sports. 24(3) Pages 563-568
https://www.researchgate.net/profile/Joe_Warne/publication/233956034/figure/tbl1/AS:667075571892232@1536054618827/Summary-of-pre-and-post-results-in-the-shod-and-SBR-condition_W640.jpg
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The purpose of this study was to evaluate the effects of a 4-week familiarization to simulated barefoot running (SBR) on running economy (RE) when compared with shod running. Fifteen trained male runners (age: 24 ± 4 years; stature: 177.2 ± 6.21 cm; mass: 67.99 ± 7.36 kg and VO(2max) 70.2 ± 5.2 mL/kg/min) were recruited. Subjects completed two RE tests, 24 h apart, in a random order, in both the SBR and shod condition (pretest) at 11 km/h and 13 km/h. Oxygen uptake, heart rate, stride frequency, and foot strike patterns were measured in both conditions. Subjects then completed a 4-week familiarization period of SBR, before repeating the two RE tests (post-test). At pretest, there was no significant difference in RE between SBR and shod running (P = 0.463), but following the 4-week familiarization period, RE significantly improved by 6.9% in the SBR condition compared with shod running (46.4 ± 0.9 vs 43.2 ± 1.2 mL/kg/min; P = 0.011). A significant improvement in RE was observed in the SBR condition (8.09%) between the pretest and post-test (47.0 ± 1.2 vs 43.2 ± 1.2 mL/kg/min; P = 0.002). RE improved in the SBR condition as a result of familiarization, and became significantly lower in SBR compared with shod running. この研究の目的は、4週間の慣れのシミュレーションが裸足ランニング(SBR)に与える影響を、靴ランニングと比較した場合のランニングエコノミー(RE)に評価することでした。 15の訓練された男性ランナー(年齢:24±4歳;身長:177.2±6.21センチ;質量:67.99±7.36キロとVO(2max)70.2±5.2ミリリットル/ kg /分)が採用されました。被験者は、24時間離れた2つのREテストをランダムな順序で、11キロ/時と13キロ/時のSBRと靴(事前テスト)の両方で完了しました。酸素摂取量、心拍数、歩幅、および足のストライクパターンは、両方の条件で測定されました。次に、被験者はSBRの4週間の慣れ期間を完了してから、2つのREテスト(テスト後)を繰り返しました。事前テストでは、SBRと実行中のshodの間のREに有意差はありませんでしたが(P = 0.463)、4週間の慣れ期間の後、実行中のshodと比較して、SBR状態でREは6.9%大幅に改善しました(46.4±±0.9 vs 43.2) ±1.2 mL / kg /分; P = 0.011)。プレテストとポストテストの間でSBR状態(8.09%)でREの有意な改善が観察されました(47.0±1.2対43.2±1.2 mL / kg / min; P = 0.002)。慣れの結果、REはSBR状態が改善し、SHODの実行と比較してSBRが大幅に低下しました。