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最終更新日：2026/05/15
鈴木 康弘
スズキ ヤスヒロ
(Yasuhiro Suzuki)
論文
- タイトル
- タイトル（英）
- Track and Treadmill Lactate Assessments Are Not Interchangeable for Training Prescription in Elite Distance Runners.
- 参照URL
- https://researchmap.jp/suzukiyasuhiro/published_papers/53611057
- 著者
- 著者（英）
- Yasuhiro Suzuki,Naoya Takei,Fumiya Tanji,Ryo Yamanaka,Tetsuro Saeki
- 担当区分
- 概要
- 概要（英）
- This study characterized physiological and biomechanical differences between track and treadmill running in elite distance runners at race-relevant intensities. Nine male Tier 4 runners (5000 m personal best: 13:35 ± 0:03 min:s; 10 000 m: 27:44 ± 0:06 min:s) completed six-stage incremental tests (286-375 m·min-1) on both a 300-m track and a motorized treadmill (0% grade) in a randomized crossover design. Blood lactate concentration was significantly higher during track running across all stages (p < 0.001, η2p = 0.784), with the difference increasing progressively from 1.0 mmol·L-1 at stage 1 to 3.7 mmol·L-1 at stage 6 (condition × stage interaction: p < 0.001, η2p = 0.624). Running velocities at fixed blood lactate concentrations were lower during track running at both 4 mmol·L-1 (329.6 ± 4.3 vs. 345.1 ± 4.1 m·min-1; p = 0.008) and 6 mmol·L-1 (344.2 ± 3.1 vs. 359.4 ± 3.8 m·min-1; p = 0.012), corresponding to velocity adjustments of approximately 7-8 s·km-1. Ground contact times were significantly longer during track running at high intensities. In eight runners with 10 000 m season bests, track-based velocity at 6 mmol·L-1 demonstrated superior predictive validity (r = -0.973, R2 = 0.948, p < 0.001) compared to treadmill assessment (r = -0.695, R2 = 0.483, p = 0.061). Track and treadmill lactate assessments are not interchangeable for training prescription; track-based assessment should be prioritized when feasible. At threshold speeds typical of this cohort (~21 km·h-1), treadmill-derived threshold velocities exceeded track-derived values by approximately 7-8 s·km-1. Practitioners should apply this correction in both directions: when transferring treadmill-derived zones to track training, prescribed track velocities should be reduced by this margin; conversely, to replicate equivalent track intensity on a treadmill, treadmill speed should be raised by the same amount. The required correction is speed-dependent and increases at higher running velocities.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- Scandinavian journal of medicine & science in sports
- 巻
- 36
- 号
- 4
- 開始ページ
- e70286
- 終了ページ
- 出版年月
- 2026年4月
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1111/sms.70286
- 共同研究・競争的資金等の研究課題