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Juçara (Euterpe Edulis Martius) Supplementation Effect in Muscle Protection, Performance and Soreness in Lower Limbs After Exercise-Induced Muscle Damage

2026년 5월 7일 업데이트: Fábio Juner Lanferdini, Universidade Federal de Santa Maria

Juçara (Euterpe Edulis Martius) Supplementation Effect in Muscle Protection, Performance and Soreness in Lower Limbs After Exercise-Induced Muscle Damage: A Six-Week Randomized, Triple-Blind, Placebo-Controlled Clinical Trial

The purpose of this study is to find out if taking a natural supplement made from the Juçara fruit (a Brazilian berry rich in antioxidants called anthocyanins) can help the body recover faster after damage caused by exercise. Researchers want to see if Juçara can reduce muscle soreness and help muscles regain their strength and quality more quickly compared to a placebo (a "dummy" pill with no active ingredients).

What happens during the study? The study included 24 healthy, active men. It was a "crossover" study, meaning every participant tried both the Juçara supplement and the placebo at different times.

Supplement Phase: Participants took 12 capsules a day for 7 days.

Muscle Damage Test: To cause temporary muscle damage, participants performed a specific jumping protocol (100 maximal jumps).

Recovery Monitoring: Researchers tracked the participants for 72 hours after the jumps to measure:

How high they could jump (strength/performance).

Muscle soreness (using a pain scale).

Muscle "quality" and stiffness (using ultrasound imaging).

Wait Period: After the first phase, participants waited 14 days (washout) before switching to the other supplement to repeat the process.

연구 개요

상태

완전한

정황

개입 / 치료

연구 유형

중재적

등록 (실제)

24

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

  • 브라질
    • Rio Grande do Sul
      • Santa Maria, Rio Grande do Sul, 브라질, 97105900
        • Centro de Educação Física e Desportos

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인

건강한 자원 봉사자를 받아들입니다

아니

설명

Inclusion Criteria:

  • Males
  • Aged 18-40 years
  • Physically active, defined as performing at least three exercise sessions per week according to IPAQ questionnaire
  • No history at lower-limb within the previous six months
  • No medical restrictions for maximal exercise testing
  • No allergy to red fruits
  • No physical, cognitive and/or psychological limitations affecting the execution or understanding of the protocol
  • No history of lower-limb surgery
  • No use nutritional supplements within 30 days prior to study initiation
  • Abstention from caffeine, cacao, yerba mate tea, and soft drinks during the study protocol.

Exclusion Criteria:

  • Individuals younger than 18 or older than 40 years
  • Not physically active, defined as performing fewer than three exercise sessions per week according to IPAQ questionnaire
  • Presence of history at lower-limb injury within the previous six months
  • Presence of medical restrictions for maximal exercise testing
  • Known allergy to red fruits
  • Presence of physical, cognitive and/or psychological limitations affecting the execution or understanding of the protocol
  • History of lower-limb surgery
  • Use of nutritional supplements within 30 days prior to study initiation
  • Inability to abstain from caffeine, cacao, yerba mate tea, and soft drinks during the study protocol

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 다른
  • 할당: 무작위
  • 중재 모델: 크로스오버 할당
  • 마스킹: 네 배로

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: Juçara group
The sample consisted of 24 healthy, physically active men with any kind of experience in any physical exercise modality. Eligibility criteria were as follows: (1) male, aged 18-40 years; (2) physically active, defined as performing at least three exercise sessions per week according to IPAQ questionnaire; (3) no history at lower-limb within the previous six months; (4) no medical restrictions for maximal exercise testing; (5) no allergy to red fruits; (6) no physical, cognitive and/or psychological limitations affecting the execution or understanding of the protocol; (7) no history of lower-limb surgery; (8) no use nutritional supplements within 30 days prior to study initiation; and (9) abstention from caffeine, cacao, yerba mate tea, and soft drinks during the study protocol.
건강 보조 식품: Juçara
Total of 11 separate occasions under the Juçara condition. A familiarization session of CMJ and EIMD protocol (10 sets of CMJ repetitions with 1-minute rest between sets) was performed, followed by a 14-day washout period. During this visit, volunteers' descriptive data were assessed. On day 1 of this condition (72h pre EIMD), body mass was obtained, and participants received the supplementation (Juçara) to be consumed for 7 days (one capsule every 12 h). On day 2, the CSA from QUAD and HAMS, elastography from vastus lateralis (VL) and biceps femoris long head (BFlh) of the dominant limb, and the CMJ performance were assessed. After that, participants performed the EIMD protocol. Follow-up assessments were conducted at 24 h (day 3), 48 h (day 4), and 72 h (day 5) post-EIMD, repeating the same measurements. A 14-day washout period separated the two interventions.
위약 비교기: Placebo Group
The sample consisted of 24 healthy, physically active men with any kind of experience in any physical exercise modality. Eligibility criteria were as follows: (1) male, aged 18-40 years; (2) physically active, defined as performing at least three exercise sessions per week according to IPAQ questionnaire; (3) no history at lower-limb within the previous six months; (4) no medical restrictions for maximal exercise testing; (5) no allergy to red fruits; (6) no physical, cognitive and/or psychological limitations affecting the execution or understanding of the protocol; (7) no history of lower-limb surgery; (8) no use nutritional supplements within 30 days prior to study initiation; and (9) abstention from caffeine, cacao, yerba mate tea, and soft drinks during the study protocol.
건강 보조 식품: Placebo group
Total of 11 separate occasions under the placebo condition. A familiarization session of CMJ and EIMD protocol (10 sets of CMJ repetitions with 1-minute rest between sets) was performed, followed by a 14-day washout period. During this visit, volunteers' descriptive data were assessed. On day 1 of this condition (72h pre EIMD), body mass was obtained, and participants received the supplementation (placebo) to be consumed for 7 days (one capsule every 12 h). On day 2, the CSA from QUAD and HAMS, elastography from vastus lateralis (VL) and biceps femoris long head (BFlh) of the dominant limb, and the CMJ performance were assessed. After that, participants performed the EIMD protocol. Follow-up assessments were conducted at 24 h (day 3), 48 h (day 4), and 72 h (day 5) post-EIMD, repeating the same measurements. A 14-day washout period separated the two interventions.

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Countermovement Jump Height
기간: From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Countermovement Jump (CMJ) hieght will be measured to assess using two force plates (AMTI OR6-6-2000; 1000 Hz). Measurements will be obtained at Baseline (Pre), and at 24, 48, and 72 hours following the exercise induced muscle damage (EIMD) protocol. Data will be expressed in centimeters (cm). Jump height will be calculated using take-off velocity and projectile motion principles.
From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Contermovement jump power
기간: From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Countermovement Jump (CMJ) power will be evaluated using two force plates (AMTI OR6-6-2000; 1000 Hz). Peak power will be calculated based on the jump flight time or force-time curve. Assessments will be performed at Baseline (Pre), 24h, 48h, and 72h post exercise induced muscle damage. Data will be expressed in Watts (W). Power during the concentric phase (i.e., the propulsive phase; interval between the onset of propulsion and take-off) will be calculated by multiplying force by velocity.
From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Quadriceps and hamstrings Echointensity
기간: From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Quadriceps and Hamstrings muscle echointensity will be assessed using ultrasonography to evaluate muscle damage. Images will be analyzed through gray-scale histogram analysis using ImageJ software. Assessments will be performed at Baseline (Pre-exercise), and at 24 hours, 48 hours, and 72 hours following the exercise-induced muscle damage (EIMD) protocol. Data will be expressed in arbitrary units (AU).
From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Quadriceps and Hamstrings Cross-Sectional Area
기간: From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol
Muscle Cross-Sectional Area from Quadriceps and Hamstrings will be assessed using an ultrasound with extended field of view mode at 50% of limb length. Quadriceps and Hamstrings Cros-Sectional areas will be expressed in cm².
From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol
Vastus Lateralis and Biceps Femoris Long Head stiffness
기간: From pre Exercise Muscle Damage Protocol to Post-72h Exercise Induced Muscle Damage protocol.
Vastus Lateralis and Biceps Femoris Long Head muscle stiffness will be assessed using Shear Wave Elastography mode from an ultrasound. Muscle stiffness will be expressed in kilopascal (kPa).
From pre Exercise Muscle Damage Protocol to Post-72h Exercise Induced Muscle Damage protocol.
Quadriceps and Hamstrings muscle soreness
기간: From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.
Muscle soreness of the quadriceps will be assessed using a Visual Analogue Scale (VAS). Measurements will be obtained at Baseline (Pre-exercise), Immediately Post-exercise, 24 hours, 48 hours, and 72 hours following the Exercise Induced Muscle Damage (EIMD) protocol. Data will be expressed on a scale from 0 (no soreness) to 30 centimeters (worst possible soreness).
From pre Exercise Induced Muscle Damage protocol to Post-72h Exercise Induced Muscle Damage protocol.

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

Universidade Federal de Santa Maria

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2024년 6월 3일

기본 완료 (실제)

2024년 10월 3일

연구 완료 (실제)

2024년 12월 2일

연구 등록 날짜

최초 제출

2026년 4월 30일

QC 기준을 충족하는 최초 제출

2026년 5월 7일

처음 게시됨 (실제)

2026년 5월 13일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 5월 13일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 5월 7일

마지막으로 확인됨

2026년 5월 1일

추가 정보

이 연구와 관련된 용어

키워드

기타 연구 ID 번호

  • 6.753.984
  • UFSM (기타 식별자: UFSM)

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