Acute Endocrine Responses to Aerobic and Anaerobic Exercise in Sedentary Women: A Comparative Analysis of Thyroid Hormones and Cortisol (AERAE)
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
This interventional study is designed to compare the acute endocrine responses elicited by aerobic and anaerobic exercise in sedentary women. A total of 30 healthy sedentary women aged 18-25 years will voluntarily participate. Individuals who have engaged in regular exercise or sports training, experienced a serious upper- or lower-extremity injury during the previous six months, or had a neurological, auditory, visual, or vestibular disorder during the previous year will not be included. Before participation, all individuals will be informed about the study procedures, provide written informed consent, and undergo medical screening.
Each participant will complete aerobic and anaerobic exercise protocols in separate testing sessions. The aerobic exercise protocol will consist of a progressive 20-meter shuttle run test. Participants will run continuously between two lines positioned 20 meters apart, following prerecorded audio signals. Running speed will progressively increase as the interval between signals decreases. The test will end when a participant fails to reach the designated line before the signal on two consecutive occasions.
The anaerobic exercise protocol will consist of a 30-second Wingate test performed on a Monark cycle ergometer connected to computerized analysis software. Following an unloaded acceleration period of approximately 3-4 seconds, an external resistance equivalent to 65 g/kg of body mass will be applied. Participants will be instructed to pedal against this resistance at maximal effort for 30 seconds.
Four venous blood samples will be collected from each participant: immediately before and after the aerobic exercise protocol and immediately before and after the anaerobic exercise protocol. Each sample will consist of approximately 8 mL of blood collected from an antecubital vein by qualified healthcare professionals under medical supervision. The samples will be centrifuged at 3,500 revolutions per minute to separate serum and plasma. Serum thyroid-stimulating hormone (TSH), triiodothyronine (T3), thyroxine (T4), and cortisol concentrations will be measured using chemiluminescence-based laboratory methods.
Exercise testing will be conducted at the Hasan Doğan School of Physical Education and Sports Laboratory at Karabuk University. Laboratory analyses will be performed at the Public Health Laboratory of the Karabuk Provincial Health Directorate. Pre-to-post-exercise changes in hormone concentrations will be evaluated within each exercise condition and compared between the aerobic and anaerobic exercise protocols.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Özgür EKEN, PhD
- Telefonnummer: +905532132795
- E-mail: ozgur.eken@inonu.edu.tr
Studiesteder
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Karabük Province
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Karabük, Karabük Province, Tyrkiet (Türkiye), 78050
- Rekruttering
- Karabuk University, Hasan Dogan Faculty of Sport Sciences
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Kontakt:
- Musa ŞAHİN, PhD
- Telefonnummer: +905549755058
- E-mail: musasahin@karabuk.edu.tr
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Female participants aged 18-25 years
- Studying at the Faculty of Sports Sciences of Yalova University
- Not actively participating in regular exercise or sports training
- Voluntarily agreeing to participate in the study
- Providing written informed consent
- Being medically eligible to perform the exercise protocols following preparticipation medical screening
Exclusion Criteria:
- Having a neurological disorder during the previous year
- Having an auditory, visual, or vestibular disorder during the previous year
- Having experienced a serious upper- or lower-extremity injury during the previous six months
- Having any medical condition identified during screening that could prevent safe participation in maximal exercise testing
- Being unable or unwilling to complete either exercise protocol or blood-sampling procedures
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Aerobic and Anaerobic Exercise
Participants will complete both a progressive 20-meter shuttle run test and a 30-second Wingate anaerobic test in separate testing sessions.
Venous blood samples will be collected immediately before and after each exercise protocol to assess acute changes in serum thyroid-stimulating hormone (TSH), triiodothyronine (T3), thyroxine (T4), and cortisol concentrations.
Each participant will serve as her own control.
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Participants will perform a progressive 20-meter shuttle run test by running continuously between two lines positioned 20 meters apart in time with prerecorded audio signals.
The initial running speed will progressively increase as the interval between audio signals decreases.
The test will end when the participant fails to reach the designated line before the signal on two consecutive occasions.
Participants will perform a 30-second Wingate anaerobic test on a Monark cycle ergometer connected to computerized analysis software.
Following an unloaded acceleration phase of approximately 3-4 seconds, a resistance corresponding to 65 g/kg of body mass will be applied.
Participants will be instructed to pedal against this resistance at maximal effort for 30 seconds.
Peak power, mean power, minimum power, and fatigue index will be recorded.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
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Change in Serum Cortisol Concentration
Tidsramme: Immediately before and immediately after each exercise protocol
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Immediately before and immediately after each exercise protocol
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
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
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- KBU-THYROID-2026-01
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
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