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Effects of CrossFit Training on the Immune System (CFIT-IMMUNE)

11 września 2026 zaktualizowane przez: Assoc. Prof. Dr. Özgür EKEN, Inonu University

From Acute Response to Chronic Adaptation: Immunological Effects of an Eight-Week CrossFit Training Program in Sedentary Adults

This interventional study aims to investigate the effects of both acute and eight-week CrossFit training on immune system responses in sedentary adults. Participants will undergo an acute CrossFit exercise session, followed by an eight-week supervised CrossFit training program. Blood samples will be collected before and after the acute exercise session and again following the eight-week intervention to evaluate changes in selected immune system biomarkers. The primary objective is to determine whether acute and chronic CrossFit training induces significant alterations in immune function in previously sedentary individuals. The findings are expected to contribute to a better understanding of the immunological adaptations associated with high-intensity functional training and to provide evidence regarding the safety and potential health benefits of CrossFit exercise in sedentary populations.

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Szczegółowy opis

CrossFit is a high-intensity functional training (HIFT) program that combines aerobic exercise, resistance training, weightlifting, gymnastics, and metabolic conditioning within a single exercise session. Owing to its increasing popularity among both athletes and the general population, there is growing interest in understanding the physiological and immunological adaptations associated with CrossFit training. Although regular physical activity is known to enhance immune function and improve overall health, high-intensity exercise may induce transient alterations in immune responses, particularly in previously sedentary individuals.

The immune system plays a critical role in protecting the body against infections and maintaining physiological homeostasis. Acute bouts of strenuous exercise may temporarily modify immune cell function and inflammatory responses, whereas long-term exercise training may promote beneficial adaptations and improve immune regulation. However, the effects of CrossFit training on immune system biomarkers in sedentary adults remain insufficiently investigated.

The purpose of this interventional study is to evaluate the effects of both an acute CrossFit exercise session and an eight-week supervised CrossFit training program on immune system responses in sedentary adults. Participants will complete baseline assessments followed by an acute CrossFit exercise session. Subsequently, they will participate in an eight-week supervised CrossFit training program. Blood samples will be collected at predetermined time points before and after the acute exercise session and following completion of the eight-week intervention to assess changes in immune system biomarkers.

The primary objective is to determine whether acute and chronic CrossFit training produce significant changes in immune function in sedentary individuals. The results of this study are expected to improve understanding of the immunological responses to high-intensity functional training and provide evidence regarding the safety and potential health benefits of CrossFit exercise for previously sedentary adults.

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

30

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

    • Karabük Province
      • Karabük, Karabük Province, Turcja (Türkiye)
        • Exercise Physiology Laboratory, Faculty of Sport Sciences, Karabuk University

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły

Akceptuje zdrowych ochotników

Tak

Opis

Inclusion Criteria:- Male participants aged 18 to 23 years

  • Currently enrolled as a student at Yalova University
  • Not regularly participating in exercise or sports training
  • Medically eligible to participate in CrossFit training
  • Willing and able to complete the eight-week CrossFit training program conducted three days per week
  • Willing to provide venous blood samples at the specified assessment times
  • Willing to provide written informed consent

Exclusion Criteria:- Regular participation in exercise or sports training

  • History of a neurological disorder within the previous year
  • History of an auditory, visual, or vestibular disorder within the previous year
  • Serious upper- or lower-extremity injury within the previous six months
  • Presence of a medical condition that could prevent safe participation in the exercise program
  • Inability to complete the training or blood-sampling procedures
  • Withdrawal of voluntary consent

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Podstawowa nauka
  • Przydział: Nie dotyczy
  • Model interwencyjny: Zadanie dla jednej grupy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: CrossFit Training
Participants assigned to the CrossFit Training Group will participate in a structured CrossFit exercise program for 8 weeks. Training sessions will be performed three times per week under the supervision of certified trainers. Each session will include warm-up, functional strength exercises, high-intensity metabolic conditioning exercises, and cool-down periods. Exercise intensity will be monitored throughout the intervention period.

articipants in the experimental group will participate in an eight-week CrossFit training program performed three days per week (Monday, Wednesday, and Friday). Each training session will last approximately 60 minutes and will include a dynamic warm-up, strength training exercises, a Workout of the Day (WOD) section, and a cool-down period.

The strength training component will include functional resistance exercises such as squats, deadlifts, and push presses, performed for 3-5 sets of 5-10 repetitions. Training intensity will progressively increase from approximately 60-70% of one-repetition maximum (1RM) during the first four weeks to 70-80% of 1RM during the final four weeks.

The WOD component will include high-intensity functional exercises such as burpees, kettlebell swings, box jumps, rowing, sit-ups, pull-ups, and short-distance running. WOD sessions will be performed using AMRAP (As Many Rounds As Possible) and For Time formats with durations of approximately 10-20 minutes. P

Inne nazwy:
  • 8-Week CrossFit Training Program

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Mean Change in Total Leukocyte Count From Baseline to Completion of the Eight-Week CrossFit Program
Ramy czasowe: Baseline and immediately after completion of the eight-week CrossFit training program
Total leukocyte count will be determined from venous blood samples collected before the first training session and immediately after completion of the eight-week CrossFit training program. For each participant, the change will be calculated as the post-program value minus the baseline value. The group-level outcome will be summarized using the mean change and standard deviation.
Baseline and immediately after completion of the eight-week CrossFit training program
Mean Change in Absolute Monocyte Count From Baseline to Completion of the Eight-Week CrossFit Program
Ramy czasowe: Baseline and immediately after completion of the eight-week CrossFit training program
Absolute monocyte count will be determined from venous blood samples collected before the first training session and immediately after completion of the eight-week CrossFit training program. For each participant, the change will be calculated as the post-program value minus the baseline value. The group-level outcome will be summarized using the mean change and standard deviation.
Baseline and immediately after completion of the eight-week CrossFit training program
Mean Change in Absolute Lymphocyte Count From Baseline to Completion of the Eight-Week CrossFit Program
Ramy czasowe: Baseline and immediately after completion of the eight-week CrossFit training program
Absolute lymphocyte count will be determined from venous blood samples collected before the first training session and immediately after completion of the eight-week CrossFit training program. For each participant, the change will be calculated as the post-program value minus the baseline value. The group-level outcome will be summarized using the mean change and standard deviation.
Baseline and immediately after completion of the eight-week CrossFit training program
Mean Change in Absolute Neutrophil Count From Baseline to Completion of the Eight-Week CrossFit Program
Ramy czasowe: Baseline and immediately after completion of the eight-week CrossFit training program
Absolute neutrophil count will be determined from venous blood samples collected before the first training session and immediately after completion of the eight-week CrossFit training program. For each participant, the change will be calculated as the post-program value minus the baseline value. The group-level outcome will be summarized using the mean change and standard deviation.
Baseline and immediately after completion of the eight-week CrossFit training program

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

5 maja 2026

Zakończenie podstawowe (Rzeczywisty)

30 czerwca 2026

Ukończenie studiów (Rzeczywisty)

30 czerwca 2026

Daty rejestracji na studia

Pierwszy przesłany

28 lipca 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

11 września 2026

Pierwszy wysłany (Rzeczywisty)

17 września 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

17 września 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

11 września 2026

Ostatnia weryfikacja

1 września 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • KBU-FTB12-2026-002

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

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