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Objective <p>This systematic review and meta-analysis study aims to determine the effects of green tea supplementation (GTS) on body composition, muscle damage, and maximal oxygen consumption.</p> Methods <p>A comprehensive literature search in Scopus, PubMed, Google Scholar, and Web of Science databases was performed until 3rd February, 2025. Randomized controlled trials (RCTs) that evaluated the effects of GTS on body composition, muscle damage, and maximal oxygen consumption in adults that exposed to exercise were included. The pooled weighted mean difference (WMD) was calculated by the random-effects model. The certainty in the evaluations was assessed by the GRADE approach.</p> Results <p>A pooled analysis of 34 trials revealed that GTS supplementation resulted in a significant decrease in body mass index [(WMD = – 0.36&#xa0;kg/m<sup>2</sup>; 95% CI – 0.68 to – 0.05; <i>P</i> = 0.023, GRADE = 351, moderate], percent body fat [(WMD = – 0.93%; 95% CI – 1.56 to – 0.30; <i>P</i> = 0.004, GRADE = 404, moderate], and a significant increase in VO<sub>2max</sub> [(WMD = 2.06 mL/kg<sup>−1</sup>/min<sup>−1</sup>; 95% CI 0.674–3.45; <i>P</i> = 0.004, GRADE = 184, moderate]. In contrast, supplementation with GTS did not change creatine kinase [(WMD = – 6.28 U. L<sup>−1</sup>; 95% CI ( – 14.04, to 1.48; <i>P</i> = 0.113, GRADE = 323, low)], lactate dehydrogenase [(WMD = – 3.25 U. L<sup>−1</sup>; 95% CI – 29.39 to 22.88; <i>P</i> = 0.807, GRADE = 74, low], and waist circumference [(WMD = 0.14 cm; 95% CI – 2.67, 2.96; <i>P</i> = 0.921, GRADE = 174, low].</p> Conclusion <p>Our findings showed that green tea consumption reduces body mass index and fat percentage while improving maximal oxygen consumption in overweight individuals, with moderate certainty of evidence.</p>

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The effect of green tea supplementation on body composition, muscle damage, and maximal oxygen consumption: a systematic review and meta-analysis of clinical trials

  • 期刊论文

  • 发表日期：

    2025年7月5日

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  • Nastaran Mahmoudi Shirkoohi,
  • Haniyeh Lorzadeh Amin,
  • Salih M. S. Zebari,
  • Fatemeh Naeini,
  • Parisa Karimi,
  • Sakineh Shab-Bidar,
  • Kurosh Djafarian

摘要

Objective

This systematic review and meta-analysis study aims to determine the effects of green tea supplementation (GTS) on body composition, muscle damage, and maximal oxygen consumption.

Methods

A comprehensive literature search in Scopus, PubMed, Google Scholar, and Web of Science databases was performed until 3rd February, 2025. Randomized controlled trials (RCTs) that evaluated the effects of GTS on body composition, muscle damage, and maximal oxygen consumption in adults that exposed to exercise were included. The pooled weighted mean difference (WMD) was calculated by the random-effects model. The certainty in the evaluations was assessed by the GRADE approach.

Results

A pooled analysis of 34 trials revealed that GTS supplementation resulted in a significant decrease in body mass index [(WMD = – 0.36 kg/m2; 95% CI – 0.68 to – 0.05; P = 0.023, GRADE = 351, moderate], percent body fat [(WMD = – 0.93%; 95% CI – 1.56 to – 0.30; P = 0.004, GRADE = 404, moderate], and a significant increase in VO2max [(WMD = 2.06 mL/kg−1/min−1; 95% CI 0.674–3.45; P = 0.004, GRADE = 184, moderate]. In contrast, supplementation with GTS did not change creatine kinase [(WMD = – 6.28 U. L−1; 95% CI ( – 14.04, to 1.48; P = 0.113, GRADE = 323, low)], lactate dehydrogenase [(WMD = – 3.25 U. L−1; 95% CI – 29.39 to 22.88; P = 0.807, GRADE = 74, low], and waist circumference [(WMD = 0.14 cm; 95% CI – 2.67, 2.96; P = 0.921, GRADE = 174, low].

Conclusion

Our findings showed that green tea consumption reduces body mass index and fat percentage while improving maximal oxygen consumption in overweight individuals, with moderate certainty of evidence.