《我是運科竹：每週閱讀一段運動科學相關文獻，強化英文閱讀理解力以及運動科學相關知識》

英文原文

The maximal lactate steady state, abbreviated as MLSS, is the maximal exercise intensity where the concentration of earlobe capillary or arterial blood lactate remains constant over time. In the late 1970s and early 1980s, we (i.e. Hermann Heck and co-workers) developed a direct test to determine the MLSS to investigate whether it occurred at a lactate concentration of 4 mmol/L, as earlier predicted by Alois Mader and colleagues. The test consisted of each participant performing several constant-intensity running bouts of ≈ 30 min at intensities close to the estimated MLSS. During each run, we measured lactate every 5 min. Based on the results, we defined the MLSS as the "workload where the concentration of blood lactate does not increase more than 1 mmo/L during the last 20 min of a constant load exercise". This MLSS protocol is impractical for performance testing as it requires too many exercise bouts, but it is a gold standard to determine the real MLSS. It is especially useful to validate indirect tests that seek to estimate the MLSS.

中文翻譯

「最大乳酸穩定狀態」，縮寫簡稱MLSS (maximal lactate steady state)，是指在最大運動強度下，經由耳垂毛細血管或動脈所採集之血乳酸濃度隨著時間依然保持恆定濃度的狀態。在1970年代末至1980年代初，我們（即Heck, H.及其同儕）開發了一項直接測試，以確定MLSS是否出現在4 mmol/L的乳酸濃度，這是Alois Mader和其同儕之前所預測的。測試內容包含讓每個參與者進行數次將近30分鐘的固定強度跑步，在估計的MLSS附近進行，並且在每次跑步時，我們每5分鐘測量一次乳酸。根據結果，我們將MLSS定義為「在固定負荷運動的最後20分鐘內，血乳酸濃度不增加超過1 mmo/L」。這個MLSS定義，對於運動表現測試來說並不切實際，因為它需要太多回合的運動，但它是能夠真正確定MLSS的黃金標準，特別是能夠用於驗證並尋求估計MLSS的間接測試。

字彙

• abbreviated /əˈbriː.vi.eɪt/： 縮寫；簡稱
• earlobe /ˈɪr.loʊb/：耳垂
• concentration/ˌkɑːn.sənˈtreɪ.ʃən/：濃度
• impractical/ɪmˈpræk.tɪ.kəl/：不切實際的
• validate/ˈvæl.ə.deɪt/：證實

文獻來源

Heck, H., & Wackerhage, H. (2024). The origin of the maximal lactate steady state (MLSS). BMC sports science, medicine & rehabilitation, 16(1), 36.

https://doi.org/10.1186/s13102-024-00827-3

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