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Juçara (Euterpe Edulis Martius) Supplementation Effect in Muscle Protection, Performance and Soreness in Lower Limbs After Exercise-Induced Muscle Damage
Sponsor: Universidade Federal de Santa Maria
Summary
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.
Official title: 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
Key Details
Gender
MALE
Age Range
18 Years - 40 Years
Study Type
INTERVENTIONAL
Enrollment
24
Start Date
2024-06-03
Completion Date
2024-12-02
Last Updated
2026-05-13
Healthy Volunteers
No
Interventions
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.
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.
Locations (1)
Centro de Educação Física e Desportos
Santa Maria, Rio Grande do Sul, Brazil