Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men
The aim of the study was to evaluate the effects of long-term green tea extract (GTE) supplementation on white blood cells (WBC) in CrossFit-trained and untrained men. Twenty-eight men were recruited for this study including CrossFit-trained (CF-TR) and untrained (CF-UNT) men. The study was carried...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
2017-09-01
|
| Series: | Central European Journal of Sport Sciences and Medicine |
| Subjects: | |
| Online Access: | https://wnus.edu.pl/cejssm/en/issue/553/article/8626/ |
| _version_ | 1818950503819640832 |
|---|---|
| author | Agata Żak Ilona Pokora |
| author_facet | Agata Żak Ilona Pokora |
| author_sort | Agata Żak |
| collection | DOAJ |
| description | The aim of the study was to evaluate the effects of long-term green tea extract (GTE) supplementation on white blood cells (WBC) in CrossFit-trained and untrained men. Twenty-eight men were recruited for this study including CrossFit-trained (CF-TR) and untrained (CF-UNT) men. The study was carried out in two phases. Phase 1 involved non-supplemented untrained and trained men. Phase 2 involved the same groups but after 6-week supplementation with 2 GTE capsules once daily. Body weight, body composition and the number and percentage of peripheral blood leukocyte populations were assessed in each phase. The results revealed that the long-term green tea supplementation did not have a significant effect on body weight, body composition and the total white blood cell count of the study participants. However, the percentage of peripheral blood eosinophils increased while monocyte and neutrophil counts decreased. The changes in white blood cells were less pronounced in CrossFit-trained compared to control participants. Summing up, it should be noted that long-term GTE supplementation in CrossFit-trained men did not result in significant changes in body weight and composition and the total white blood cell count. However, the changes in leukocyte subsets were less pronounced in CrossFit-trained compared to untrained participants. |
| first_indexed | 2024-12-20T09:19:38Z |
| format | Article |
| id | doaj.art-3afb82283ec94b998fac999823da101c |
| institution | Directory Open Access Journal |
| issn | 2300-9705 2353-2807 |
| language | English |
| last_indexed | 2024-12-20T09:19:38Z |
| publishDate | 2017-09-01 |
| publisher | Wydawnictwo Naukowe Uniwersytetu Szczecińskiego |
| record_format | Article |
| series | Central European Journal of Sport Sciences and Medicine |
| spelling | doaj.art-3afb82283ec94b998fac999823da101c2022-12-21T19:45:19ZengWydawnictwo Naukowe Uniwersytetu SzczecińskiegoCentral European Journal of Sport Sciences and Medicine2300-97052353-28072017-09-011910.18276/cej.2017.3-06Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained MenAgata Żak0Ilona Pokora1The Doctorial Studies, The Jerzy Kukuczka Academy of Physical Education, Katowice, PolandDepartment of Physiology, The Jerzy Kukuczka Academy of Physical Education, Katowice, PolandThe aim of the study was to evaluate the effects of long-term green tea extract (GTE) supplementation on white blood cells (WBC) in CrossFit-trained and untrained men. Twenty-eight men were recruited for this study including CrossFit-trained (CF-TR) and untrained (CF-UNT) men. The study was carried out in two phases. Phase 1 involved non-supplemented untrained and trained men. Phase 2 involved the same groups but after 6-week supplementation with 2 GTE capsules once daily. Body weight, body composition and the number and percentage of peripheral blood leukocyte populations were assessed in each phase. The results revealed that the long-term green tea supplementation did not have a significant effect on body weight, body composition and the total white blood cell count of the study participants. However, the percentage of peripheral blood eosinophils increased while monocyte and neutrophil counts decreased. The changes in white blood cells were less pronounced in CrossFit-trained compared to control participants. Summing up, it should be noted that long-term GTE supplementation in CrossFit-trained men did not result in significant changes in body weight and composition and the total white blood cell count. However, the changes in leukocyte subsets were less pronounced in CrossFit-trained compared to untrained participants.https://wnus.edu.pl/cejssm/en/issue/553/article/8626/CrossFitgreen tealeukocytesphysical trainingsupplementation |
| spellingShingle | Agata Żak Ilona Pokora Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men Central European Journal of Sport Sciences and Medicine CrossFit green tea leukocytes physical training supplementation |
| title | Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men |
| title_full | Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men |
| title_fullStr | Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men |
| title_full_unstemmed | Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men |
| title_short | Effect of Long-Term Green Tea Extract Supplementation on Peripheral Blood Leukocytes in CrossFit-Trained and Untrained Men |
| title_sort | effect of long term green tea extract supplementation on peripheral blood leukocytes in crossfit trained and untrained men |
| topic | CrossFit green tea leukocytes physical training supplementation |
| url | https://wnus.edu.pl/cejssm/en/issue/553/article/8626/ |
| work_keys_str_mv | AT agatazak effectoflongtermgreenteaextractsupplementationonperipheralbloodleukocytesincrossfittrainedanduntrainedmen AT ilonapokora effectoflongtermgreenteaextractsupplementationonperipheralbloodleukocytesincrossfittrainedanduntrainedmen |