An Initial Investigation Into the Effects of β-Alanine on Performance and Physiological Responses During Simulated Wrestling Matches
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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-
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Taichung, Taiwan
- China Medical University
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-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Wrestle athletes aged 12 to 25 years with at least 3 years of wrestle training experience.
Exclusion Criteria:
- All participants must be free from chronic conditions such as heart disease and hypertension, and must not have experienced any serious lower limb musculoskeletal injuries within the past six months.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Andet
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Firedobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Placebo komparator: Placebo
Indeholdende spiselig gul nr. 4, spiselig gul nr. 5, saccharose, silica, talkum, oxideret stivelse, gelatine, magnesiumstearat og palmevoks.
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The Placebo capsule supplement was taken for 4 weeks (6 capsules per day).
The Beta-Alanine capsule supplement was taken for 4 weeks, with a daily dosage of 4.8 g of Beta-Alanine (equivalent to 6 capsules per day, each containing 800 mg of Beta-Alanine).
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Eksperimentel: Beta-Alanine
Each capsule containing 800 mg of Beta-Alanine.
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The Placebo capsule supplement was taken for 4 weeks (6 capsules per day).
The Beta-Alanine capsule supplement was taken for 4 weeks, with a daily dosage of 4.8 g of Beta-Alanine (equivalent to 6 capsules per day, each containing 800 mg of Beta-Alanine).
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Specific Wrestling Performance Test (SWPT)
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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The test consists of two rounds with identical procedures.
Each round lasts for 3 minutes, with a 30-second rest interval between rounds.
During the first minute, participants perform one throw every 10 seconds for a total of 3 throws.
This is followed by maximal repeated throws performed between 30 and 50 seconds, and then a rest period from 50 to 60 seconds.
The second minute follows the same procedure as the first minute.
In the third minute, participants again perform one throw every 10 seconds for a total of 3 throws, followed by 30 seconds of maximal repeated throws, during which the total number of throws is recorded.
According to the experimental design of Marković, the dummy weight is adjusted based on the athlete's body weight: participants weighing less than 75 kg throw a 22 kg dummy, those weighing between 75-90 kg throw a 27 kg dummy, and those weighing more than 90 kg throw a 32 kg dummy (Marković et al., 2022).
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Including for 4 days in both beta-alanine and placebo trials
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Reaction test
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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Reaction time is a key factor influencing wrestling performance, as shorter reaction times enable athletes to execute more effective technical and tactical actions.
In this study, the BlazePod reaction light system will be used to conduct the reaction test.
After hearing the command "Ready," participants will assume a position with both hands and knees on the ground.
Once the light is activated, participants must stand up as quickly as possible and tap the reaction light.
The time interval between the "Ready" command and the light activation will vary randomly in order to prevent participants from anticipating the timing of the stimulus.
The test will be performed three times with a 1-minute rest interval between trials, and the best performance result will be recorded.
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Including for 4 days in both beta-alanine and placebo trials
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Grip strength test
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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Grip strength will be assessed using an electronic handgrip dynamometer.
Participants will stand in a natural upright position with their arms hanging naturally at their sides.
The elbows and wrists will be maintained at 0° extension, and the grip width will be adjusted to fit the position of the second finger joint.
During the test, participants will be instructed to squeeze the dynamometer handle as forcefully as possible for 5 seconds.
Grip strength measurements will be performed three times for each hand, with a 1-minute rest interval between trials.
The highest value obtained will be recorded as the test result.
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Including for 4 days in both beta-alanine and placebo trials
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The Borg Rating of Perceived Exertion (RPE) Scale
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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The Borg Rating of Perceived Exertion Scale measures how hard exercise feels.
Participants rate effort from 6 (no exertion) to 20 (maximal exertion).
A higher score means greater effort (worse fatigue).
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Including for 4 days in both beta-alanine and placebo trials
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Medicine Ball Chest Throw (MBCT) test
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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The sport-specific wrestling fitness test protocol developed by Dehnou in 2020 will be used in this study.
Participants will sit on a chair with their feet shoulder-width apart and firmly placed on the floor, with the toes aligned with the starting line.
The knees will be maintained at a 90° flexion angle while the upper body remains upright.
Participants will hold a 5 kg medicine ball in front of the chest with both hands.
During the test, participants will forcefully push the ball forward using a chest-pass motion similar to a basketball chest pass.
Throughout the movement, the ischial tuberosities must remain in contact with the seat, and trunk rotation is not permitted.
The throwing distance will be measured and recorded.
The test will be performed three times with a 1-minute rest interval between trials, and the greatest distance achieved will be recorded as the final result.
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Including for 4 days in both beta-alanine and placebo trials
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Overhead Medicine Ball Throw (OMBT) test
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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The sport-specific wrestling fitness test protocol developed by Dehnou in 2020 will be adopted in this study.
Participants will stand with their feet shoulder-width apart and their heels aligned with the starting line, while holding a 5 kg medicine ball naturally in front of the body with both hands.
Participants will then squat down until the medicine ball reaches knee level, after which they will rapidly extend the body and forcefully throw the ball backward over the head.
The throwing distance will be measured and recorded.
The test will be performed three times with a 1-minute rest interval between trials, and the greatest distance achieved will be recorded as the final result.
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Including for 4 days in both beta-alanine and placebo trials
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Back strength test
Tidsramme: Including for 4 days in both beta-alanine and placebo trials
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Back strength will be measured using a back strength dynamometer.
Participants will stand on the testing platform while gripping the handle with both hands using an overhand grip.
The knees will remain fully extended, and the upper body will lean forward at approximately 30°.
The length of the chain attached to the handle may be adjusted according to each participant's body size to ensure an appropriate testing position.
During the test, participants will pull the handle upward with maximal effort using the strength of the back and upper body muscles, while avoiding excessive use of the arms and legs.
The dynamometer pointer will display the measured back strength value.
The test will be performed three times with a 1-minute rest interval between trials, and the highest value obtained will be recorded.
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Including for 4 days in both beta-alanine and placebo trials
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Studiestol: Jung-Piao Tsao, China Medical University, China
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CMUH114-REC3-170
Plan for individuelle deltagerdata (IPD)
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