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Walzik D, Wences Chirino TY, Zimmer P, Joisten N. Molecular insights of exercise therapy in disease prevention and treatment. Signal Transduct Target Ther 2024; 9:138. [PMID: 38806473 PMCID: PMC11133400 DOI: 10.1038/s41392-024-01841-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/30/2024] Open
Abstract
Despite substantial evidence emphasizing the pleiotropic benefits of exercise for the prevention and treatment of various diseases, the underlying biological mechanisms have not been fully elucidated. Several exercise benefits have been attributed to signaling molecules that are released in response to exercise by different tissues such as skeletal muscle, cardiac muscle, adipose, and liver tissue. These signaling molecules, which are collectively termed exerkines, form a heterogenous group of bioactive substances, mediating inter-organ crosstalk as well as structural and functional tissue adaption. Numerous scientific endeavors have focused on identifying and characterizing new biological mediators with such properties. Additionally, some investigations have focused on the molecular targets of exerkines and the cellular signaling cascades that trigger adaption processes. A detailed understanding of the tissue-specific downstream effects of exerkines is crucial to harness the health-related benefits mediated by exercise and improve targeted exercise programs in health and disease. Herein, we review the current in vivo evidence on exerkine-induced signal transduction across multiple target tissues and highlight the preventive and therapeutic value of exerkine signaling in various diseases. By emphasizing different aspects of exerkine research, we provide a comprehensive overview of (i) the molecular underpinnings of exerkine secretion, (ii) the receptor-dependent and receptor-independent signaling cascades mediating tissue adaption, and (iii) the clinical implications of these mechanisms in disease prevention and treatment.
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Affiliation(s)
- David Walzik
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, 44227, Dortmund, North Rhine-Westphalia, Germany
| | - Tiffany Y Wences Chirino
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, 44227, Dortmund, North Rhine-Westphalia, Germany
| | - Philipp Zimmer
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, 44227, Dortmund, North Rhine-Westphalia, Germany.
| | - Niklas Joisten
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, 44227, Dortmund, North Rhine-Westphalia, Germany.
- Division of Exercise and Movement Science, Institute for Sport Science, University of Göttingen, 37075, Göttingen, Lower Saxony, Germany.
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Campbell JP, Walzik D, Zimmer P. What dictates tumour cell sensitivity to exercise? Nat Rev Immunol 2024; 24:303. [PMID: 38337080 DOI: 10.1038/s41577-024-01001-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Affiliation(s)
- John P Campbell
- Department for Health, University of Bath, Bath, UK
- School of Medical and Health Science, Edith Cowan University, Joondalup, Australia
| | - David Walzik
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, Dortmund, Germany
| | - Philipp Zimmer
- Division of Performance and Health (Sports Medicine), Institute for Sport and Sport Science, TU Dortmund University, Dortmund, Germany.
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3
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Fiuza-Luces C, Valenzuela PL, Gálvez BG, Ramírez M, López-Soto A, Simpson RJ, Lucia A. The effect of physical exercise on anticancer immunity. Nat Rev Immunol 2024; 24:282-293. [PMID: 37794239 DOI: 10.1038/s41577-023-00943-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2023] [Indexed: 10/06/2023]
Abstract
Regular physical activity is associated with lower cancer incidence and mortality, as well as with a lower rate of tumour recurrence. The epidemiological evidence is supported by preclinical studies in animal models showing that regular exercise delays the progression of cancer, including highly aggressive malignancies. Although the mechanisms underlying the antitumorigenic effects of exercise remain to be defined, an improvement in cancer immunosurveillance is likely important, with different immune cell subtypes stimulated by exercise to infiltrate tumours. There is also evidence that immune cells from blood collected after an exercise bout could be used as adoptive cell therapy for cancer. In this Perspective, we address the importance of muscular activity for maintaining a healthy immune system and discuss the effects of a single bout of exercise (that is, 'acute' exercise) and those of 'regular' exercise (that is, repeated bouts) on anticancer immunity, including tumour infiltrates. We also address the postulated mechanisms and the clinical implications of this emerging area of research.
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Affiliation(s)
- Carmen Fiuza-Luces
- Physical Activity and Health Research Group ('PaHerg'), Research Institute of the Hospital 12 de Octubre ('imas12'), Madrid, Spain.
| | - Pedro L Valenzuela
- Physical Activity and Health Research Group ('PaHerg'), Research Institute of the Hospital 12 de Octubre ('imas12'), Madrid, Spain
- Systems Biology Department, Universidad de Alcalá, Alcalá de Henares, Spain
| | - Beatriz G Gálvez
- Physical Activity and Health Research Group ('PaHerg'), Research Institute of the Hospital 12 de Octubre ('imas12'), Madrid, Spain
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Universidad Complutense de Madrid, Madrid, Spain
| | - Manuel Ramírez
- Oncohematology Unit, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
- Biomedical Research Foundation, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
- La Princesa Institute of Heah, Madrid, Spain
| | - Alejandro López-Soto
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Oviedo, Oviedo, Spain.
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Asturias, Spain.
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Asturias, Spain.
| | - Richard J Simpson
- School of Nutritional Sciences and Wellness, The University of Arizona, Tucson, AZ, USA
- Department of Paediatrics, The University of Arizona, Tucson, AZ, USA
- Department of Immunobiology, The University of Arizona, Tucson, AZ, USA
| | - Alejandro Lucia
- CIBER of Frailty and Healthy Aging (CIBERFES), Madrid, Spain.
- Faculty of Sport Sciences, Universidad Europea, Madrid, Spain.
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Proschinger S, Schenk A, Metcalfe AJ, Zimmer P. HIIT Induces Stronger Shifts within the Peripheral T Cell Compartment Independent of Sex. Int J Sports Med 2024; 45:211-221. [PMID: 38134917 DOI: 10.1055/a-2197-0882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Acute exercise induces changes within the T-cell compartment, especially in cytotoxic CD8+ memory subsets, depending on exercise intensity and duration. It is unclear whether exercise-induced changes in major T-cell subsets differ in response to acute high-intensity interval training (HIIT) or moderate-intensity continuous training (MICT) and whether sex-specific effects exist. Twenty-four recreationally active runners (females: n=12, 27.8±4.1years, 54.4±4.6 ml*kg-1*min-1; males: n=12, 31.6±3.8years, 58.9±7.7 ml*kg-1*min-1) participated in this randomized controlled crossover study, and conducted an energy- and duration-matched HIIT and MICT session. Blood was sampled before (T1), immediately (T2) and 1 h after exercise (T3). Flow cytometry was used to identify T-cell populations. HIIT decreased the proportion of CD8+ T-cells more pronounced at T3 compared to MICT (p=0.007), induced a significantly stronger increase in the CD8+ effector memory (TEM) cell proportion at T2 (p=0.032), and decreased CD4+ central memory proportion more pronounced at T2 (p=0.029). A decrease below baseline CD8+ TEM proportion at T3 was observed only after HIIT (p<0.001). No interaction effects between sexes were revealed. Taken together, HIIT represents a more potent stimulus to induce shifts mainly within the cytotoxic CD8+ T-cell compartment, thereby giving implications to investigate the role of HIIT on the cell´s effector phenotype and function in more detail.
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Affiliation(s)
- Sebastian Proschinger
- Division of Performance and Health (Sports Medicine), TU Dortmund University, Institute for Sport and Sport Science, Dortmund, Germany
| | - Alexander Schenk
- Division of Performance and Health (Sports Medicine), TU Dortmund University, Institute for Sport and Sport Science, Dortmund, Germany
| | - Alan J Metcalfe
- Department for Molecular and Cellular Sports Medicine, Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany
| | - Philipp Zimmer
- Division of Performance and Health (Sports Medicine), TU Dortmund University, Institute for Sport and Sport Science, Dortmund, Germany
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Orange ST, Leslie J, Ross M, Mann DA, Wackerhage H. The exercise IL-6 enigma in cancer. Trends Endocrinol Metab 2023; 34:749-763. [PMID: 37633799 DOI: 10.1016/j.tem.2023.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/28/2023]
Abstract
Interleukin (IL)-6 elicits both anticancer and procancer effects depending on the context, which we have termed the 'exercise IL-6 enigma'. IL-6 is released from skeletal muscles during exercise to regulate short-term energy availability. Exercise-induced IL-6 provokes biological effects that may protect against cancer by improving insulin sensitivity, stimulating the production of anti-inflammatory cytokines, mobilising immune cells, and reducing DNA damage in early malignant cells. By contrast, IL-6 continuously produced by leukocytes in inflammatory sites drives tumorigenesis by promoting chronic inflammation and activating tumour-promoting signalling pathways. How can a molecule have such opposing effects on cancer? Here, we review the roles of IL-6 in chronic inflammation, tumorigenesis, and exercise-associated cancer prevention and define the factors that underpin the exercise IL-6 enigma.
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Affiliation(s)
- Samuel T Orange
- Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK; School of Biomedical, Nutritional and Sport Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
| | - Jack Leslie
- Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK; Newcastle Fibrosis Research Group, Bioscience Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Mark Ross
- Institute of Life and Earth Sciences, School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, UK
| | - Derek A Mann
- Newcastle University Centre for Cancer, Newcastle University, Newcastle upon Tyne, UK; Newcastle Fibrosis Research Group, Bioscience Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Henning Wackerhage
- Department of Sport & Health Science, Technical University of Munich, Munich, Germany
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Ross MD, Turner JE, Orange ST, Metcalfe RS. Editorial: The influence of lifestyle factors on cancer biology and treatment efficacy. Front Physiol 2023; 14:1254151. [PMID: 37588853 PMCID: PMC10425544 DOI: 10.3389/fphys.2023.1254151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 07/17/2023] [Indexed: 08/18/2023] Open
Affiliation(s)
- Mark D. Ross
- School of Energy Geoscience, Infrastructure and Society, Institute of Life and Earth Sciences, Heriot-Watt University, Edinburgh, United Kingdom
| | - James E. Turner
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Samuel T. Orange
- School of Biomedical, Nutritional and Sport Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle, United Kingdom
| | - Richard S. Metcalfe
- Applied Sports Technology, Exercise and Medicine Research Centre, Swansea University, Swansea, United Kingdom
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Dovey Z, Horowitz A, Waingankar N. The influence of lifestyle changes (diet, exercise and stress reduction) on prostate cancer tumour biology and patient outcomes: A systematic review. BJUI COMPASS 2023; 4:385-416. [PMID: 37334023 PMCID: PMC10268595 DOI: 10.1002/bco2.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/05/2023] [Indexed: 06/20/2023] Open
Abstract
Background The mostly indolent natural history of prostate cancer (PCa) provides an opportunity for men to explore the benefits of lifestyle interventions. Current evidence suggests appropriate changes in lifestyle including diet, physical activity (PA) and stress reduction with or without dietary supplements may improve both disease outcomes and patient's mental health. Objective This article aims to review the current evidence on the benefits of all lifestyle programmes for PCa patients including those aimed at reducing obesity and stress, explore their affect on tumour biology and highlight any biomarkers that have clinical utility. Evidence acquisition Evidence was obtained from PubMed and Web of Science using keywords for each section on the affects of lifestyle interventions on (a) mental health, (b) disease outcomes and (c) biomarkers in PCa patients. PRISMA guidelines were used to gather the evidence for these three sections (15, 44 and 16 publications, respectively). Evidence synthesis For lifestyle studies focused on mental health, 10/15 demonstrated a positive influence, although for those programmes focused on PA it was 7/8. Similarly for oncological outcomes, 26/44 studies demonstrated a positive influence, although when PA was included or the primary focus, it was 11/13. Complete blood count (CBC)-derived inflammatory biomarkers show promise, as do inflammatory cytokines; however, a deeper understanding of their molecular biology in relation to PCa oncogenesis is required (16 studies reviewed). Conclusions Making PCa-specific recommendations on lifestyle interventions is difficult on the current evidence. Nevertheless, notwithstanding the heterogeneity of patient populations and interventions, the evidence that dietary changes and PA may improve both mental health and oncological outcomes is compelling, especially for moderate to vigorous PA. The results for dietary supplements are inconsistent, and although some biomarkers show promise, significantly more research is required before they have clinical utility.
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Affiliation(s)
- Zach Dovey
- Mount Sinai Health System, Department of UrologyIcahn Medical SchoolNew YorkNew YorkUSA
| | - Amir Horowitz
- Icahn School of MedicineThe Mount Sinai HospitalNew YorkNew YorkUSA
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Hanson ED, Sakkal S, Bates-Fraser LC, Que S, Cho E, Spielmann G, Kadife E, Violet JA, Battaglini CL, Stoner L, Bartlett DB, McConell GK, Hayes A. Acute exercise induces distinct quantitative and phenotypical T cell profiles in men with prostate cancer. Front Sports Act Living 2023; 5:1173377. [PMID: 37325799 PMCID: PMC10266416 DOI: 10.3389/fspor.2023.1173377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/12/2023] [Indexed: 06/17/2023] Open
Abstract
Background Reduced testosterone levels can influence immune system function, particularly T cells. Exercise during cancer reduces treatment-related side effects and provide a stimulus to mobilize and redistribute immune cells. However, it is unclear how conventional and unconventional T cells (UTC) respond to acute exercise in prostate cancer survivors compared to healthy controls. Methods Age-matched prostate cancer survivors on androgen deprivation therapy (ADT) and those without ADT (PCa) along with non-cancer controls (CON) completed ∼45 min of intermittent cycling with 3 min at 60% of peak power interspersed by 1.5 min of rest. Fresh, unstimulated immune cell populations and intracellular perforin were assessed before (baseline), immediately following (0 h), 2 h, and 24 h post-exercise. Results At 0 h, conventional T cell counts increased by 45%-64% with no differences between groups. T cell frequency decreased by -3.5% for CD3+ and -4.5% for CD4+ cells relative to base at 0 h with CD8+ cells experiencing a delayed decrease of -4.5% at 2 h with no group differences. Compared to CON, the frequency of CD8+CD57+ cells was -18.1% lower in ADT. Despite a potential decrease in maturity, ADT increased CD8+perforin+ GMFI. CD3+Vα7.2+CD161+ counts, but not frequencies, increased by 69% post-exercise while CD3+CD56+ cell counts increased by 127% and were preferentially mobilized (+1.7%) immediately following the acute cycling bout. There were no UTC group differences. Cell counts and frequencies returned to baseline by 24 h. Conclusion Following acute exercise, prostate cancer survivors demonstrate normal T cell and UTC responses that were comparable to CON. Independent of exercise, ADT is associated with lower CD8+ cell maturity (CD57) and perforin frequency that suggests a less mature phenotype. However, higher perforin GMFI may attenuate these changes, with the functional implications of this yet to be determined.
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Affiliation(s)
- Erik D. Hanson
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, United States
- Human Movement Science Curriculum, University of North Carolina, Chapel Hill, NC, United States
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Samy Sakkal
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Lauren C. Bates-Fraser
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, United States
- Human Movement Science Curriculum, University of North Carolina, Chapel Hill, NC, United States
| | - Shadney Que
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Eunhan Cho
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, United States
| | - Guillaume Spielmann
- School of Kinesiology, Louisiana State University, Baton Rouge, LA, United States
| | - Elif Kadife
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - John A. Violet
- Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Claudio L. Battaglini
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, United States
- Human Movement Science Curriculum, University of North Carolina, Chapel Hill, NC, United States
| | - Lee Stoner
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, United States
- Human Movement Science Curriculum, University of North Carolina, Chapel Hill, NC, United States
| | - David B. Bartlett
- School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Glenn K. McConell
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
| | - Alan Hayes
- Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Victoria University, Melbourne, VIC, Australia
- Department of Medicine—Western Health, Melbourne Medical School, The University of Melbourne, Melbourne, VIC, Australia
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Koivula T, Lempiäinen S, Rinne P, Rannikko JH, Hollmén M, Sundberg CJ, Rundqvist H, Minn H, Heinonen I. The effect of acute exercise on circulating immune cells in newly diagnosed breast cancer patients. Sci Rep 2023; 13:6561. [PMID: 37085562 PMCID: PMC10121717 DOI: 10.1038/s41598-023-33432-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/12/2023] [Indexed: 04/23/2023] Open
Abstract
The role of exercise in cancer prevention and control is increasingly recognized, and based on preclinical studies, it is hypothesized that mobilization of leukocytes plays an important role in the anti-tumor effect. Thus, we examined how 10-min acute exercise modulates immune cells in newly diagnosed breast cancer patients. Blood samples were taken at rest, immediately after exercise and 30 min after exercise and phenotypic characterization of major leukocyte subsets was done using 9-color flow cytometry. Total leukocyte count increased by 29%, CD8+ T cell count by 34%, CD19+ B cell count by 18%, CD56+CD16+ NK cell count by 130%, and CD14+CD16+ monocyte count by 51% immediately after acute exercise. Mobilization of CD45+, CD8+, CD19+, and CD56+CD16+ cells correlated positively with exercising systolic blood pressure, heart rate percentage of age predicted maximal heart rate, rate pressure product, and mean arterial pressure. Our findings indicate that a single bout of acute exercise of only 10 min can cause leukocytosis in breast cancer patients. Mobilization of leukocytes appear to be directly related to the intensity of exercise. It is possible that the positive effect of exercise on oncologic outcome might be partly due to immune cell mobilization as documented in the present study.
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Affiliation(s)
- Tiia Koivula
- Turku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland.
| | - Salla Lempiäinen
- Turku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland
| | - Petteri Rinne
- Institute of Biomedicine, University of Turku, Turku, Finland
| | - Jenna H Rannikko
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Maija Hollmén
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Carl Johan Sundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
- Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden
| | - Helene Rundqvist
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Heikki Minn
- Department of Oncology and Radiotherapy, Turku University Hospital, Turku, Finland
| | - Ilkka Heinonen
- Turku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520, Turku, Finland
- Rydberg Laboratory of Applied Sciences, University of Halmstad, Halmstad, Sweden
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Bröde P, Claus M, Gajewski PD, Getzmann S, Golka K, Hengstler JG, Wascher E, Watzl C. Calibrating a Comprehensive Immune Age Metric to Analyze the Cross Sectional Age-Related Decline in Cardiorespiratory Fitness. BIOLOGY 2022; 11:1576. [PMID: 36358277 PMCID: PMC9687950 DOI: 10.3390/biology11111576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/30/2022]
Abstract
Cardiorespiratory fitness (CRF) is essential for sustained work ability in good health, but declines with aging, as does the functionality of the immune system, the latter process commonly referred to as immunosenescence. This study aimed to compare the capacity of immunosenescence biomarkers with chronological age for predicting low CRF in a cross-sectional sample recruited from the regional working population. CRF was determined by submaximal bicycle ergometer testing in a cross-sectional sample of 597 volunteers aged 20-70 years from the 'Dortmund Vital Study' (DVS, ClinicalTrials.gov Identifier: NCT05155397). Low CRF was scored if the ergometer test was not completed due to medical reasons or if the power output projected to a heart rate of 130 bpm divided by body mass was below sex-specific reference values of 1.25 W/kg for females and 1.5 W/kg for males, respectively. In addition to established biomarkers of immunosenescence, we calibrated a comprehensive metric of immune age to our data and compared its predictive capacity for low CRF to chronological age, while adjusting our analysis for the influence of sex, obesity, and the level of regular physical activity, by applying univariate and multiple logistic regression. While obesity, low physical activity, chronological and immune age were all associated with increased probability for low CRF in univariate analyses, multiple logistic regression revealed that obesity and physical activity together with immune age, but not chronological age, were statistically significant predictors of low CRF outcome. Sex was non-significant due to the applied sex-specific reference values. These results demonstrate that biological age assessed by our immunological metric can outperform chronological age as a predictor for CRF and indicate a potential role for immunosenescence in explaining the inter-individual variability of the age-related decline in cardiorespiratory fitness.
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Affiliation(s)
- Peter Bröde
- Leibniz Research Centre for Working Environment and Human Factors at TU Dortmund (IfADo), Ardeystrasse 67, D-44139 Dortmund, Germany
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