Placebo Effect in Field-Based Physical Performance
Psychophysiological Mechanisms of the Placebo Effect on Physical Performance in Field Settings
Přehled studie
Postavení
Postavení
Podmínky
Podmínky
Intervence / Léčba
Intervence / Léčba
Detailní popis
Typ studie
Typ studie
Zápis (Odhadovaný)
Zápis
Fáze
Fáze
- Nelze použít
Kontakty a umístění
Studijní kontakt
Studijní kontakt
- Jméno: Jakub Malik, PhD
- Telefonní číslo: +48739975701
- E-mail: malik@awf.poznan.pl
Studijní místa
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Greater Poland Voivodeship
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Poznan, Greater Poland Voivodeship, Polsko
- Poznań University of Physical Education
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Kontakt:
- Jakub Malik, PhD
- Telefonní číslo: +48739975701
- E-mail: malik@awf.poznan.pl
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-
Kritéria účasti
Kritéria způsobilosti
Kritéria způsobilosti
Věk způsobilý ke studiu
- Dospělý
Přijímá zdravé dobrovolníky
Popis
Inclusion Criteria:
- Age between 20 and 35 years,
- Healthy adults,
- Regular physical activity,
- Normal or corrected-to-normal vision,
- Habitual caffeine consumption.
Exclusion Criteria:
- History of neurological, psychiatric, cardiovascular, or metabolic disorders,
- Current use of medication or supplements affecting the central nervous system,
- Musculoskeletal injuries that would impair physical performance,
- No habitual caffeine consumption or severe negative side effects of caffeine,
- Diagnosed sleep disorders or chronic fatigue,
- Diagnosed major depressive disorder or other severe psychiatric conditions,
- Presence of any menstrual disorders,
- Inability to attend all experimental study visits.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Základní věda
- Přidělení: Randomizované
- Intervenční model: Paralelní přiřazení
- Maskování: Čtyřnásobek
Počet zbraní
Zbraně a zásahy
Skupina účastníků / ArmSkupina účastníků / Arm |
Intervence / LéčbaIntervence / Léčba |
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Experimentální: Caffeine Group
Participants ingest a single dose of caffeine (6mg/kg body mass) prior to a field-based exercise protocol (e.g., Cooper test or Repeated Sprint Ability).
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Anhydrous caffeine administered in an encapsulated form at a dosage of 6mg per kilogram of body mass, 30-60 minutes before the exercise protocol.
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Aktivní komparátor: Placebo Group
Participants ingest a single dose of placebo (corn starch) in an identical capsule prior to a field-based exercise protocol.
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Corn starch administered in an identical encapsulated form as the active caffeine, 30-60 minutes before the exercise protocol.
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Falešný srovnávač: Control Group
Participants perform the same field-based exercise protocol without ingesting any capsule or active substance.
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Participants perform the same exercise protocols without any capsule or substance administration.
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Co je měření studie?
Primární výstupní opatření
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Physical Performance Capacity (total distance in running, metres)
Časové okno: Measured during the exercise protocol immediately following administration of the study intervention.
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Total physical work capacity measured as the total running distance (metres) completed during the standardized exercise protocol.
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Measured during the exercise protocol immediately following administration of the study intervention.
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Physical Performance Capacity (total work in Joules for cycling)
Časové okno: Measured during the exercise protocol immediately following administration of the study intervention.
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Total physical work capacity measured as the total mechanical work (Joules) completed during the standardized cycling exercise protocol.
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Measured during the exercise protocol immediately following administration of the study intervention.
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Physical Performance Capacity (exercise duration until exhaustion, minutes)
Časové okno: Measured during the exercise protocol immediately following administration of the study intervention.
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Total physical work capacity measured as exercise duration until volitional exhaustion during the standardized exercise protocol.
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Measured during the exercise protocol immediately following administration of the study intervention.
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Sekundární výstupní opatření
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
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Exercise Heart Rate (bpm)
Časové okno: Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Heart rate (beats per minute) recorded continuously throughout the standardized exercise protocol.
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Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Cognitive Heart Rate (bpm)
Časové okno: Measured during cognitive testing immediately before and immediately after the exercise protocol.
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Heart rate recorded during standardized cognitive performance tasks.
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Measured during cognitive testing immediately before and immediately after the exercise protocol.
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Post-Exercise Heart Rate Recovery (bpm)
Časové okno: Continuously monitored during the first 5 minutes immediately following completion of the exercise protocol.
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Heart rate recorded during the post-exercise recovery period.
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Continuously monitored during the first 5 minutes immediately following completion of the exercise protocol.
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Cognitive Reaction Time (ms)
Časové okno: Measured immediately before and immediately after the exercise protocol.
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Reaction time measured during standardized cognitive tasks (e.g., Psychomotor Vigilance Test, Stroop Test, Flanker Test).
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Measured immediately before and immediately after the exercise protocol.
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Rating of Perceived Exertion (Borg Scale, points)
Časové okno: Measured immediately after completion of the exercise protocol.
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Perceived exertion assessed using the Borg Rating of Perceived Exertion Scale (6-20).
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Measured immediately after completion of the exercise protocol.
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Biomechanical Kinematic Profile (cm)
Časové okno: Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Continuous recording of kinematic parameters derived from wearable sensors, including step length and vertical oscillation.
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Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Biomechanical Kinematic Profile (ms)
Časové okno: Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Continuous recording of stance time derived from wearable sensor data.
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Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Biomechanical Kinematic Profile (steps/min)
Časové okno: Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Continuous recording of cadence derived from wearable sensor data.
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Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Anthropometric Indices (kg)
Časové okno: Measured at the start of the protocol.
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Body mass expressed in kilograms.
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Measured at the start of the protocol.
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Anthropometric Indices (m)
Časové okno: Measured at the start of the protocol.
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Height expressed in metres.
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Measured at the start of the protocol.
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Body composition (fat-free mass, fat mass) (kg)
Časové okno: Measured at the start of the protocol.
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Assessment of body composition (fat-free mass, fat mass) (kg) will be performed at the start of the protocol.
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Measured at the start of the protocol.
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Body composition (fat-free mass, fat mass) (%)
Časové okno: Measured at the start of the protocol.
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Assessment of body composition (fat-free mass, fat mass) (%) will be performed at the start of the protocol.
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Measured at the start of the protocol.
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Body composition (total body water) (L)
Časové okno: Measured at the start of the protocol.
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Assessment of body composition (total body water) (L) will be performed at baseline at the start of the protocol.
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Measured at the start of the protocol.
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Body composition (total body water) (%)
Časové okno: Measured at the start of the protocol.
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Assessment of body composition (total body water) (%) will be performed at baseline at the start of the protocol.
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Measured at the start of the protocol.
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Exercise Heart Rate Variability (ms)
Časové okno: Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Heart rate variability recorded continuously throughout the standardized exercise protocol to assess autonomic regulation.
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Continuously monitored during the exercise protocol immediately following administration of the study intervention.
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Cognitive Heart Rate Variability (ms)
Časové okno: Measured during cognitive testing immediately before and immediately after the exercise protocol.
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Heart rate variability recorded during standardized cognitive performance tasks.
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Measured during cognitive testing immediately before and immediately after the exercise protocol.
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Post-Exercise Heart Rate Variability Recovery (ms)
Časové okno: Continuously monitored during the first 5 minutes immediately following completion of the exercise protocol.
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Heart rate variability recorded during the post-exercise recovery period.
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Continuously monitored during the first 5 minutes immediately following completion of the exercise protocol.
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Cognitive Accuracy (%)
Časové okno: Measured immediately before and immediately after the exercise protocol.
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Accuracy measured during standardized cognitive tasks (e.g., Psychomotor Vigilance Test, Stroop Test, Flanker Test).
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Measured immediately before and immediately after the exercise protocol.
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Performance Expectancy (points)
Časové okno: Measured immediately after completion of the exercise protocol.
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Measured immediately before the exercise protocol following administration of the study intervention.
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Measured immediately after completion of the exercise protocol.
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Spolupracovníci a vyšetřovatelé
Sponzor
Sponzor
Vyšetřovatelé
Vyšetřovatelé
- Vrchní vyšetřovatel: Jakub Malik, PhD, Poznan University of Physical Education, Department of Sports Psychology
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia (Odhadovaný)
Začátek studia
Primární dokončení (Odhadovaný)
Primární dokončení
Dokončení studie (Odhadovaný)
Dokončení studie
Termíny zápisu do studia
První předloženo
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Aktuální)
První zveřejněno
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Poslední zveřejněná aktualizace
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Naposledy ověřeno
Více informací
Termíny související s touto studií
Další relevantní podmínky MeSH
Další identifikační čísla studie
Další identifikační čísla studie
- 152-1-26
- 2025/57/N/NZ4/04470 (Jiné číslo grantu/financování: National Science Centre)
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Plánujete sdílet data jednotlivých účastníků (IPD)?
Popis plánu IPD
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