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Introduction <p>The consumption of tropical fruits, including jaboticaba (<i>Myrciaria cauliflora</i>), a popular Brazilian berry, has attracted attention due to its possible antioxidant and anti-inflammatory benefits in humans.</p> Purpose <p>The aim of the present study was to investigate the effects of jaboticaba berry juice (JBT) supplementation on markers of muscle damage and muscle quality after exercise-induced muscle damage (EIMD) in resistance-trained subjects.</p> Methods <p>Over 7&#xa0;days, 24 trained participants were randomly assigned to consume 250&#xa0;mL of JBT (containing approximately 1,060&#xa0;mg of total polyphenols) or 250&#xa0;mL of a fruit-flavored placebo drink (control). To induce EIMD, on the fourth day, participants performed ten sets of ten repetitions for the non-dominant knee extension and flexion using an isokinetic dynamometer. Assessments for maximal voluntary isometric contraction (MVIC), muscle thickness (MT), echo intensity (EI), and delayed-onset muscle soreness (DOMS) were measured before the initiation of the study and 2&#xa0;h, 24&#xa0;h, 48&#xa0;h, and 72&#xa0;h after EIMD protocol.</p> Results <p>The EIMD protocol significantly reduced MVIC (<i>p</i> &lt; 0.001) while increasing MT (<i>p</i> = 0.013), EI (<i>p</i> = 0.024), and DOMS (<i>p</i> &lt; 0.001). JBT supplementation accelerated the recovery of MVIC (<i>p</i> = 0.006), and mitigated DOMS (<i>p</i> = 0.043) at 2&#xa0;h post-exercise. Furthermore, JBT also attenuated EI at 48&#xa0;h (<i>p</i> = 0.012) and 72&#xa0;h (<i>p</i> = 0.034) on the subsequent days after the EIMD.</p> Conclusion <p>Supplementation with JBT attenuated lower limb muscle soreness, enhanced isometric strength, and morphological characteristics of muscle following EIMD. Additional research on the anti-inflammatory effects of jaboticaba berry juice is necessary to clarify the exact mechanisms involved in these benefits.</p> Clinical trial registration <p>Brazilian Registry of Clinical Trials (ReBEC) (RBR-9fjqvng).</p>

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Supplementation of jaboticaba berry (Myrciaria cauliflora) juice attenuates lower limb muscle damage following eccentric exercise in resistance-trained subjects

  • 期刊论文

  • 发表日期：

    2025年1月12日

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  • Olavo João Frederico Ramos Junior,
  • Leonardo Victor Miranda de Souza,
  • Natália Soares Veiga,
  • Thiago Silveira Alvares

摘要

Introduction

The consumption of tropical fruits, including jaboticaba (Myrciaria cauliflora), a popular Brazilian berry, has attracted attention due to its possible antioxidant and anti-inflammatory benefits in humans.

Purpose

The aim of the present study was to investigate the effects of jaboticaba berry juice (JBT) supplementation on markers of muscle damage and muscle quality after exercise-induced muscle damage (EIMD) in resistance-trained subjects.

Methods

Over 7 days, 24 trained participants were randomly assigned to consume 250 mL of JBT (containing approximately 1,060 mg of total polyphenols) or 250 mL of a fruit-flavored placebo drink (control). To induce EIMD, on the fourth day, participants performed ten sets of ten repetitions for the non-dominant knee extension and flexion using an isokinetic dynamometer. Assessments for maximal voluntary isometric contraction (MVIC), muscle thickness (MT), echo intensity (EI), and delayed-onset muscle soreness (DOMS) were measured before the initiation of the study and 2 h, 24 h, 48 h, and 72 h after EIMD protocol.

Results

The EIMD protocol significantly reduced MVIC (p < 0.001) while increasing MT (p = 0.013), EI (p = 0.024), and DOMS (p < 0.001). JBT supplementation accelerated the recovery of MVIC (p = 0.006), and mitigated DOMS (p = 0.043) at 2 h post-exercise. Furthermore, JBT also attenuated EI at 48 h (p = 0.012) and 72 h (p = 0.034) on the subsequent days after the EIMD.

Conclusion

Supplementation with JBT attenuated lower limb muscle soreness, enhanced isometric strength, and morphological characteristics of muscle following EIMD. Additional research on the anti-inflammatory effects of jaboticaba berry juice is necessary to clarify the exact mechanisms involved in these benefits.

Clinical trial registration

Brazilian Registry of Clinical Trials (ReBEC) (RBR-9fjqvng).