What does the evidence say about Alpha Lipoic Acid Exercise Performance Randomized Trial?

Updated October 2026

Quick Answer

Alpha Lipoic Acid Exercise Performance Randomized Trial has evidence relevant to benefits, uncertainty, and practical interpretation, but conclusions should stay close to the cited sources. One representative finding is: Background/Objectives : This study aimed to evaluate the effects of four weeks of combined Acetyl-l-Carnitine and alpha-lipoic acid (ALA) supplementation on anaerobic and aerobic performance and fatigue resistance in trained cyclists, hypothesizing improvements in maximal aerobic power (MAP), Wingate test performance, and reduced lactate accumulation.

Key Takeaways

  • 01Background/Objectives : This study aimed to evaluate the effects of four weeks of combined Acetyl-l-Carnitine and alpha-lipoic acid (ALA) supplementation on anaerobic and aerobic performance and fatigue resistance in trained cyclists, hypothesizing improvements in maximal aerobic power (MAP), Wingate test performance, and reduced lactate accumulation. [de Rozas A (2025)]
  • 02Results : MAP increased by 3.4% (314 ± 32 W to 324 ± 37 W; p = 0.005) with no group interaction ( p = 0.457). [de Rozas A (2025)]
  • 03Methods : In a double-blind, randomized trial, 41 male trained cyclists (age: 36 ± 12 years; MAP: 4.35 ± 0.60 W·kg -1 ) were assigned to a supplement group (SUP, n = 19; 1200 mg/day Acetyl-l-Carnitine, 300 mg/day ALA, 1.1 mg Vitamin B1, 2.5 µg Vitamin B12) or placebo group (PLA, n = 22) for four weeks. [de Rozas A (2025)]
  • 04In addition to muscle damage and inflammation, intense training can cause oxidative stress due to increased radical formation of hydrogen peroxide (HO), superoxide (O), hypochlorous acid (HOCl) and nitric oxide (NO) []. [Isenmann Eduard (2020)]
The current Migaku evidence database contains 2 reusable source documents for Alpha Lipoic Acid Exercise Performance Randomized Trial. This answer focuses on benefits, uncertainty, and practical interpretation. - Background/Objectives : This study aimed to evaluate the effects of four weeks of combined Acetyl-l-Carnitine and alpha-lipoic acid (ALA) supplementation on anaerobic and aerobic performance and fatigue resistance in trained cyclists, hypothesizing improvements in maximal aerobic power (MAP), Wingate test performance, and reduced lactate accumulation. [de Rozas A (2025); evidence level 4] - Results : MAP increased by 3.4% (314 ± 32 W to 324 ± 37 W; p = 0.005) with no group interaction ( p = 0.457). [de Rozas A (2025); evidence level 4] - Methods : In a double-blind, randomized trial, 41 male trained cyclists (age: 36 ± 12 years; MAP: 4.35 ± 0.60 W·kg -1 ) were assigned to a supplement group (SUP, n = 19; 1200 mg/day Acetyl-l-Carnitine, 300 mg/day ALA, 1.1 mg Vitamin B1, 2.5 µg Vitamin B12) or placebo group (PLA, n = 22) for four weeks. [de Rozas A (2025); evidence level 4] - In addition to muscle damage and inflammation, intense training can cause oxidative stress due to increased radical formation of hydrogen peroxide (HO), superoxide (O), hypochlorous acid (HOCl) and nitric oxide (NO) []. [Isenmann Eduard (2020); evidence level 4] - In the following warm-up sets, the weight was increased by about 10–20% and the repetition number reduced to five and three repetitions. [Isenmann Eduard (2020); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. l-Carnitine and Alpha-Lipoic Acid Fail to Improve Anaerobic and Aerobic Performance in Trained Cyclists Despite a Reduction in Blood Lactate Concentration.
  2. The effects of alpha lipoic acid on muscle strength recovery after a single and a short-term chronic supplementation - a study in healthy well-trained individuals after intensive resistance and endurance training