BMJ open sport & exercise medicine · 2021
Diurnal variations in the expression of core-clock genes correlate with resting muscle properties and predict fluctuations in exercise performance across the day
Basti A, Yalçin M, Herms D, Hesse J, Aboumanify O, Li Y, Aretz Z, Garmshausen J, El-Athman R, Hastermann M, Blottner D, Relógio A
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- Basti A — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Yalçin M — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Herms D — Institute for Theoretical Biology (ITB), Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Hesse J — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Aboumanify O — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Li Y — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Aretz Z — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Garmshausen J — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- El-Athman R — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Hastermann M — Center of Space Medicine Berlin, NeuroMuscular Group and Institut für Integrative Neuroanatomie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Blottner D — Center of Space Medicine Berlin, NeuroMuscular Group and Institut für Integrative Neuroanatomie, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
- Relógio A — Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumor Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.
In this study, we investigated daily fluctuations in molecular (gene expression) and physiological (biomechanical muscle properties) features in human peripheral cells and their correlation with exercise performance. 21 healthy participants (13 men and 8 women) took part in three test series: for the molecular analysis, 15 participants provided hair, blood or saliva time-course sampling for the rhythmicity analysis of core-clock gene expression via RT-PCR. For the exercise tests, 16 participants conducted strength and endurance exercises at different times of the day (9h, 12h, 15h and 18h). Myotonometry was carried out using a digital palpation device (MyotonPRO), five muscles were measured in 11 participants. A computational analysis was performed to relate core-clock gene expression, resting muscle tone and exercise performance. Core-clock genes show daily fluctuations in expression in all biological samples tested for all participants. Exercise performance peaks in the late afternoon (15-18 hours for both men and women) and shows variations in performance, depending on the type of exercise (eg, strength vs endurance). Muscle tone varies across the day and higher muscle tone correlates with better performance. Molecular daily profiles correlate with daily variation in exercise performance. Training programmes can profit from these findings to increase efficiency and fine-tune timing of training sessions based on the individual molecular data. Our results can benefit both professional athletes, where a fraction of seconds may allow for a gold medal, and rehabilitation in clinical settings to increase therapy efficacy and reduce recovery times.
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