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Post-Activation Potentiation and Jump Performance During and After Ramadan

4. september 2026 opdateret af: Assoc. Prof. Dr. Özgür EKEN, Inonu University

Effects of Varied Post-Activation Potentiation Protocols on Countermovement Jump Performance in Muay Thai Athletes: A Comparative Study Between Ramadan and Post-Ramadan Periods

This study compared the acute effects of two post-activation potentiation protocols on jumping performance in male Muay Thai athletes during and after Ramadan. The investigators examined whether conditioning exercises performed at 60% or 80% of one-repetition maximum produced different effects on countermovement jump height, average power, and peak power.

Twenty male Muay Thai athletes were recruited, and 14 athletes completed all required study sessions. Each participant performed both protocols during Ramadan and again after Ramadan. The order of the protocols was randomized and counterbalanced. After a standardized warm-up, participants completed either 10 half-squat repetitions at 60% of one-repetition maximum or 5 half-squat repetitions at 80% of one-repetition maximum. Following a 5-minute recovery period, countermovement jump performance was assessed.

The study was designed to determine whether the intensity of the conditioning activity and the Ramadan period were associated with differences in explosive lower-body performance.

DETAILED DESCRIPTION This controlled, randomized, counterbalanced crossover study investigated the effects of two post-activation potentiation protocols on countermovement jump performance in male Muay Thai athletes during and after Ramadan fasting.

Twenty male Muay Thai athletes were initially recruited. Six participants did not complete all required sessions, and 14 participants completed the study and were included in the analysis. Participants had at least 2 years of Muay Thai training experience and experience participating in national-level competitions. All participants reported that they intended to observe Ramadan fasting during the Ramadan testing period.

Each participant attended four experimental sessions. The two conditioning protocols were performed during Ramadan and repeated after Ramadan. Sessions were conducted on non-consecutive days, with approximately 48 hours between testing sessions. The order of the 60% and 80% protocols was randomized and counterbalanced to reduce possible order and learning effects. Testing was generally performed at approximately 5:00 p.m.

Before the conditioning activity, participants completed a standardized 5-minute specific warm-up paced by a metronome set at 100 beats per minute. The warm-up included the stationary Spider-Man, inchworm, backward and forward lunge walks, backpedal, and straight-leg skip exercises.

The two experimental conditioning protocols were:

A single set of 10 half-squat repetitions performed at 60% of the participant's estimated one-repetition maximum.

A single set of 5 half-squat repetitions performed at 80% of the participant's estimated one-repetition maximum.

One-repetition maximum was estimated during the familiarization session using the Brzycki equation. After completing the assigned conditioning protocol, participants rested for 5 minutes.

Countermovement jump performance was then assessed using a force platform. Participants performed three countermovement jumps, with 1 minute of rest between attempts. Participants began and ended each jump in an upright position and kept their hands on their hips throughout the movement. The highest jump performance was used for analysis.

The primary performance variables were countermovement jump height, average power, and peak power. Average and peak power were estimated using the Johnson and Bahamonde equations.

During the post-Ramadan testing period, participants were instructed to arrive having consumed food at least 3 hours before testing. Participants were also instructed to avoid vigorous exercise and caffeine-containing food or drinks before the experimental sessions.

The study evaluated the main effects of Ramadan period and conditioning-protocol intensity, as well as the interaction between these two factors. The study was approved by the Inonu University Clinical Research Ethics Committee under approval number 2022/3042, and written informed consent was obtained from all participants.

Studieoversigt

Status

Status

Angiver den aktuelle rekrutteringsstatus eller den udvidede adgangsstatus.
Afsluttet

Betingelser

Betingelser

Den sygdom, lidelse, syndrom, sygdom eller skade, der undersøges. På ClinicalTrials.gov kan tilstande også omfatte andre sundhedsrelaterede problemer, såsom levetid, livskvalitet og sundhedsrisici.

Intervention / Behandling

Intervention / Behandling

En proces eller handling, der er i fokus for en klinisk undersøgelse. Interventioner omfatter lægemidler, medicinsk udstyr, procedurer, vacciner og andre produkter, der enten er til undersøgelse eller allerede er tilgængelige. Interventioner kan også omfatte ikke-invasive tilgange, såsom uddannelse eller ændring af kost og motion.

Detaljeret beskrivelse

This randomized, counterbalanced crossover study evaluated the acute effects of two post-activation conditioning protocols on countermovement jump performance in male Muay Thai athletes during and after Ramadan.

Twenty male Muay Thai athletes were recruited. Six participants did not complete all required sessions, and 14 participants completed the study procedures. Eligible participants had at least 2 years of Muay Thai training experience and experience participating in national-level competitions. Participants reported that they intended to observe Ramadan fasting during the Ramadan assessment period.

Each participant attended four experimental sessions and completed both conditioning protocols during Ramadan and again after Ramadan. Experimental sessions were conducted on non-consecutive days, with approximately 48 hours between sessions. The order of the two protocols was randomized and counterbalanced to minimize possible order and learning effects. Assessments were generally conducted at approximately 5:00 p.m.

Before each conditioning protocol, participants completed a 5-minute specific warm-up paced by a metronome set at 100 beats per minute. The warm-up consisted of the stationary Spider-Man, inchworm, backward and forward lunge walks, backpedal, and straight-leg skip exercises.

The conditioning activities consisted of half-squat exercise performed using one of the following protocols:

One set of 10 repetitions at 60% of the participant's estimated one-repetition maximum.

One set of 5 repetitions at 80% of the participant's estimated one-repetition maximum.

One-repetition maximum was estimated during the familiarization session using the Brzycki equation. After completing the conditioning activity, participants rested for 5 minutes before countermovement jump assessment.

Participants performed three countermovement jumps on a force platform, with 1 minute of rest between attempts. Each jump began from an upright standing position. Participants kept their hands on their hips and performed a self-selected countermovement before jumping vertically as high as possible. The highest jump performance was used for analysis.

The assessed performance variables were countermovement jump height, average power, and peak power. Average and peak power were estimated using the Johnson and Bahamonde equations.

During the post-Ramadan assessment period, participants were instructed to arrive after consuming food at least 3 hours before testing. Before experimental sessions, participants were also instructed to avoid vigorous exercise, caffeine, and caffeine-containing food or beverages.

The study was designed to examine the effects of conditioning-protocol intensity and assessment period on explosive lower-body performance and to determine whether the response to the 60% and 80% protocols differed between Ramadan and the post-Ramadan period.

Undersøgelsestype

Undersøgelsestype

Beskriver karakteren af ​​en klinisk undersøgelse. Undersøgelsestyper omfatter interventionelle undersøgelser (også kaldet kliniske forsøg), observationsundersøgelser (herunder patientregistre) og udvidet adgang.
Interventionel

Tilmelding (Faktiske)

Tilmelding

Antallet af deltagere i en klinisk undersøgelse. Den "forventede" tilmelding er det mål for antallet af deltagere, som forskerne skal bruge til undersøgelsen.
20

Fase

Fase

Stadiet af et klinisk forsøg, der studerer et lægemiddel eller et biologisk produkt, baseret på definitioner udviklet af U.S. Food and Drug Administration (FDA). Fasen tager udgangspunkt i undersøgelsens formål, antallet af deltagere og andre karakteristika. Der er fem faser: Tidlig fase 1 (tidligere opført som fase 0), fase 1, fase 2, fase 3 og fase 4. Ikke relevant bruges til at beskrive forsøg uden FDA-definerede faser, herunder forsøg med enheder eller adfærdsmæssige indgreb.
  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Berettigelseskriterier

De nøglekrav, som personer, der ønsker at deltage i et klinisk studie, skal opfylde eller de egenskaber, de skal have. Kvalifikationskriterier består af både inklusionskriterier (som er nødvendige for at en person kan deltage i undersøgelsen) og eksklusionskriterier (som forhindrer en person i at deltage). Typer af berettigelseskriterier omfatter, om en undersøgelse accepterer raske frivillige, har alders- eller aldersgruppekrav eller er begrænset af køn.

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Male Muay Thai athletes.
  • At least 2 years of Muay Thai training experience.
  • Active participation in national-level Muay Thai competitions.
  • Intention to observe Ramadan fasting during the Ramadan assessment period.
  • Ability to participate in the familiarization session and all experimental testing sessions.
  • Provision of written informed consent.

Exclusion Criteria:

  • Failure to complete all required experimental sessions.
  • Inability to perform the half-squat conditioning protocols or countermovement jump assessments.
  • Performance of vigorous exercise before an experimental session.
  • Consumption of caffeine or caffeine-containing foods or beverages before an experimental session.
  • Failure to comply with the study procedures or pre-test instructions.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm

Deltagergruppe / Arm

En gruppe eller undergruppe af deltagere i et klinisk forsøg, der modtager en specifik intervention/behandling eller ingen intervention i henhold til forsøgets protokol.
Intervention / Behandling

Intervention / Behandling

En proces eller handling, der er i fokus for en klinisk undersøgelse. Interventioner omfatter lægemidler, medicinsk udstyr, procedurer, vacciner og andre produkter, der enten er til undersøgelse eller allerede er tilgængelige. Interventioner kan også omfatte ikke-invasive tilgange, såsom uddannelse eller ændring af kost og motion.
Eksperimentel: Sequence 2: 80%-60% 1RM
Participants completed the 80% 1RM half-squat conditioning protocol first and the 60% 1RM half-squat conditioning protocol in the subsequent session. Both protocols were performed during Ramadan and repeated after Ramadan, with approximately 48 hours between testing sessions.
Andet: 60% 1RM Half-Squat Conditioning Protocol
Participants completed a standardized 5-minute specific warm-up paced by a metronome set at 100 beats per minute. They then performed one set of 10 half-squat repetitions at 60% of their estimated one-repetition maximum. After completing the conditioning activity, participants rested for 5 minutes before performing the countermovement jump assessment.
Andre navne:
  • 60% Post-Activation Potentiation Protocol
Andet: 80% 1RM Half-Squat Conditioning Protocol
Participants completed a standardized 5-minute specific warm-up paced by a metronome set at 100 beats per minute. They then performed one set of 5 half-squat repetitions at 80% of their estimated one-repetition maximum. After completing the conditioning activity, participants rested for 5 minutes before performing the countermovement jump assessment.
Andre navne:
  • 80% Post-Activation Potentiation Protocol
Eksperimentel: Sequence 1: 60%-80% 1RM
Participants completed the 60% 1RM half-squat conditioning protocol first and the 80% 1RM half-squat conditioning protocol in the subsequent session. Both protocols were performed during Ramadan and repeated after Ramadan, with approximately 48 hours between testing sessions.
Andet: 60% 1RM Half-Squat Conditioning Protocol
Participants completed a standardized 5-minute specific warm-up paced by a metronome set at 100 beats per minute. They then performed one set of 10 half-squat repetitions at 60% of their estimated one-repetition maximum. After completing the conditioning activity, participants rested for 5 minutes before performing the countermovement jump assessment.
Andre navne:
  • 60% Post-Activation Potentiation Protocol
Andet: 80% 1RM Half-Squat Conditioning Protocol
Participants completed a standardized 5-minute specific warm-up paced by a metronome set at 100 beats per minute. They then performed one set of 5 half-squat repetitions at 80% of their estimated one-repetition maximum. After completing the conditioning activity, participants rested for 5 minutes before performing the countermovement jump assessment.
Andre navne:
  • 80% Post-Activation Potentiation Protocol

Hvad måler undersøgelsen?

Primære resultatmål

Primære resultatmål

I et klinisk studies protokol er det planlagte resultatmål, der er det vigtigste for at evaluere effekten af ​​en intervention/behandling. De fleste kliniske undersøgelser har ét primært resultatmål, men nogle har mere end ét.
Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Countermovement Jump Height
Tidsramme: 5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft
Countermovement jump height was measured in centimeters using a Newtest 2000 force platform. Participants performed three countermovement jumps with 1 minute of rest between attempts while keeping their hands on their hips. The highest jump height recorded during each assessment was used for analysis. Higher values indicate better jump performance.
5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft
Average Power During Countermovement Jump
Tidsramme: 5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft
Average power during the countermovement jump was estimated in watts using the Johnson and Bahamonde equation. The calculation was based on the countermovement jump assessment performed after each conditioning protocol. Higher values indicate greater average lower-body power.
5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft
Peak Power During Countermovement Jump
Tidsramme: 5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft
Peak power during the countermovement jump was estimated in watts using the Johnson and Bahamonde equation. The calculation was based on the countermovement jump assessment performed after each conditioning protocol. Higher values indicate greater peak lower-body power.
5 minutes after the conditioning protocol at each of four experimental sessions: Session 1 during the last 10 days of Ramadan; Session 2, 48 hours after Session 1 during Ramadan; Session 3, approximately 3 weeks after Ramadan; and Session 4, 48 hours aft

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Sponsor

Den organisation eller person, der igangsætter undersøgelsen, og som har myndighed og kontrol over undersøgelsen.
Inonu University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

Studiestart

Den faktiske dato, hvor den første deltager blev tilmeldt en klinisk undersøgelse. Den "forventede" undersøgelses startdato er den dato, som forskerne tror vil være undersøgelsens startdato.
15. april 2022

Primær færdiggørelse (Faktiske)

Primær færdiggørelse

Den dato, hvor den sidste deltager i et klinisk studie blev undersøgt eller modtog en intervention for at indsamle endelige data for det primære resultatmål. Hvorvidt det kliniske studie sluttede i henhold til protokollen eller blev afsluttet, påvirker ikke denne dato. For kliniske undersøgelser med mere end ét primært resultatmål med forskellige afslutningsdatoer refererer dette udtryk til den dato, hvor dataindsamlingen er afsluttet for alle de primære resultatmål. Den "forventede" primære afslutningsdato er den dato, som forskerne tror vil være den primære afslutningsdato for undersøgelsen.
23. maj 2022

Studieafslutning (Faktiske)

Studieafslutning

Den dato, hvor den sidste deltager i et klinisk studie blev undersøgt eller modtog en intervention/behandling for at indsamle endelige data for de primære resultatmål, sekundære udfaldsmål og uønskede hændelser (det vil sige den sidste deltagers sidste besøg). Den "forventede" undersøgelses afslutningsdato er den dato, som forskerne tror vil være undersøgelsens afslutningsdato.
23. maj 2022

Datoer for studieregistrering

Først indsendt

Først indsendt

Den dato, hvor undersøgelsens sponsor eller investigator første gang indsendte en undersøgelsespost til ClinicalTrials.gov. Der er typisk en forsinkelse på et par dage mellem den første indsendte dato og postens tilgængelighed på ClinicalTrials.gov (den første offentliggjorte dato).
24. juli 2026

Først indsendt, der opfyldte QC-kriterier

Først indsendt, der opfyldte QC-kriterier

Den dato, hvor undersøgelsens sponsor eller investigator første gang indsender en undersøgelsespost, der er i overensstemmelse med National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgangskriterier. Sponsoren eller investigatoren skal muligvis revidere og indsende en undersøgelsespost en eller flere gange, før NLM's kvalitetskontrolkriterier er opfyldt. Det er sponsorens eller investigatorens ansvar at sikre, at undersøgelsesposten er i overensstemmelse med NLM QC-gennemgangskriterierne.
4. september 2026

Først opslået (Faktiske)

Først opslået

Datoen, hvor undersøgelsesposten først var tilgængelig på ClinicalTrials.gov efter National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgang er afsluttet. Der er typisk en forsinkelse på et par dage mellem den dato, hvor undersøgelsens sponsor eller investigator indsendte undersøgelsesposten, og den første offentliggjorte dato.
10. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

Sidste opdatering sendt

Den seneste dato, hvor ændringer i en undersøgelsespost blev gjort tilgængelig på ClinicalTrials.gov. Der kan være en forsinkelse mellem det tidspunkt, hvornår ændringerne blev indsendt til ClinicalTrials.gov af undersøgelsens sponsor eller investigator (datoen for sidste opdatering afsendt) og den sidste opdatering, der blev sendt.
10. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

Den seneste dato, hvor undersøgelsens sponsor eller investigator indsendte ændringer til en undersøgelsespost, der er i overensstemmelse med National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgangskriterier. Det er sponsorens eller investigatorens ansvar at sikre, at undersøgelsesposten er i overensstemmelse med NLM QC-gennemgangskriterierne.
4. september 2026

Sidst verificeret

Sidst verificeret

Den seneste dato, hvor undersøgelsens sponsor eller investigator bekræftede oplysningerne om en klinisk undersøgelse på ClinicalTrials.gov som nøjagtige og aktuelle. Hvis en undersøgelse med rekrutteringsstatus som rekruttering; rekrutterer endnu ikke; eller aktiv, ikke rekruttering er ikke blevet bekræftet inden for de seneste 2 år, er undersøgelsens rekrutteringsstatus vist som ukendt.
1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

Andre undersøgelses-id-numre

Andre identifikatorer eller ID-numre end NCT-nummeret, der er tildelt til en klinisk undersøgelse af undersøgelsens sponsor, finansieringsgivere eller andre. Disse numre kan omfatte unikke identifikatorer fra andre forsøgsregistre og National Institutes of Health-bevillingsnumre.
  • INONU-PAP-RAM-2022-3042

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

IPD-planbeskrivelse

The individual participant data sharing plan has not yet been finalized. Any future sharing of de-identified data will be subject to ethical approval, participant confidentiality requirements, and approval by the study investigators.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

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Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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