PUBLICATIONS

Selected recent Publications in international peer-reviewed journals:

  1. Steinacker et al. Precision Prevention for Health: The Global Alliance Framework for the Promotion of Physical Activity. Sports Medicine, 2026
  2. Angelos Vlahoyiannis, Panagiotis Bargiotas, Giorgos K. Sakkas, Georgios M. Hadjigeorgiou, Gregory C. Bogdanis, Christoforos D. Giannaki. Toward a Standardized Framework for Assessing Athletes’ Sleep: Determinants, Tools, and Practical Applications. Current Sleep Medicine Reports, 12, 11, 2026
  3. Christoforos D. Giannaki, Angelos Vlahoyiannis, Arnaldo L. Mortatti, Fabio Y. Nakamura, Gregory C. Bogdanis. Sleep Tight, Play Right: Practical Insights into Sleep for Soccer Players. Frontiers in Sports and Active Living, 8:1740420, 2026
  4. Angelos Vlahoyiannis, Costas N Tsouloupas, Pinelopi S. Stavrinou, Panayiotis Andreou, Pantelis Lysandrou, Stylianos Shiantonas, and Christoforos D. Giannaki. Who Sleeps Worse and Why? An Analysis of Sex, Chrononutrition, Anxiety, and Sleep in Adolescent Athletes. Accepted for publication to Journal of Sports Science & Coaching, 2026
  5. Upadhya B, Giannaki CD, Stavrinou PS, McDonagh J, Schlögl M, Lip GYH, Prokopidis K. Differences in peak oxygen uptake in heart failure patients with and without cachexia: a systematic review and meta-analysis. Physiological Reports. 13(22):e70663, 2025
  6. Andreas Mavrommatis, Nicos Mitsides, Myrtani Pieri, Eleni P Andreou,Giorgos K. Sakkas, Kyproula Demitriou, Michalis Spartalis, Maria Arsali, Themis Christofi, Theophanis Theophanous, Bettina Wollesen, Georgios M.Hadjigeorgiou, Christoforos D. Giannaki#. The effect of intradialytic exercise on cognition in renal patients undergoing hemodialysis: an updated systematic review of randomized controlled trials. Healthcare, 21;13(23):3016, 2025
  7. Bettina Wollesen, Piesie A. G. Asuako, Mona Herden, Christoforos D. Giannaki, Nicola Lamberti, Melanie Mack, Michel Audiffren, Yael Netz and Claudia Voelcker-Rehage. Reporting Randomised Trials on Physical Exercise or Training Interventions in Older Adults: the PETIO Guideline. European Review of Aging and Physical Activity. 2;22(1):24, 2025
  8. Konstantinos Prokopidis, Giuseppe Dario Testa, Christoforos D. Giannaki, Pinelopi Stavrinou, Eirini Kelaiditi, Emiel O. Hoogendijk, Nicola Veronese.  Prognostic and associative significance of malnutrition in sarcopenia: a systematic review and meta-analysis. Advances in Nutrition, 16(5):100428, 2025
  9. Pinelopi S. Stavrinou, Todd A. Astorino, Christoforos D. Giannaki, George Aphamis, Gregory C. Bogdanis. Customizing intense interval exercise training prescription using the “Frequency, Intensity, Time, and Type of exercise” (FITT) principle. Frontiers in Physiolοgy, 16:1553846, 2025
  10. Vlahoyiannis A. Andreou E, Aphamis G, Felekkis K, Pieri M, Sakkas GK, Giannaki CD. Evaluating the Evening Carbohydrate Dilemma: The Effect of Within-the-Day Carbohydrate Periodization on Body Composition and Physical Fitness. European Journal of Nutrition, 2025, 64(1), 23
  11. Christiana A. Demetriou, Dona Hileti, Elisavet Onisiphorou, Christiana Kazafanioti, Marios Alogakos, Dionysia Vardakastani, Erato Christofidou, Eleni Andreou, Christoforos D. Giannaki, Pinelopi Stavrinou, Philippos Philippou, Fofi Constantinidou and Elena Philippou. Associations between chrono-nutrition behaviours and cognitive outcomes in middle-aged adults: the NUTRICO cross-sectional cohort study. 50(2):262-277, 2025 Nutrition Bulletin
  12. Ataei L, Giannaki CD, Petrou C, Aphamis G. Tribulus Terrestris failed to improve exercise performance and body composition following a detraining period. Sport Sciences for Health, 21, 747–757 ,2025
  13. Eleni Andreou, Angelos Vlahogiannis, Evridiki Georgaki, Elli Mattheou, Vasiliki Giannopoulou, Ariana Georgiou, Kalliroi Dokopoulou, Andreas Pafitis, Christiana Philippou, Nicoletta Ntorzi, Christoforos Christoforou, Christoforos Giannaki, George Aphamis, Evelina Charidemou, Christos Papaneophytou, Dimitrios Papandreou. COVID-19 – change in eating, shopping habits and lifestyle in Greece and Cyprus during COVID-19 lockdown, an observational study. Nutrients, 2025,  7(2):214
  14. Koudellis M, Tsouloupas C, Christou M, Aphamis G, Bogdanis G, Giannaki CD. Physical Fitness, Psychological Characteristics, and Game Performance in Youth Male Soccer Players of Different Levels of Competition. Accepted for publication to the International Journal of Performance Analysis in Sport, 2024
  15. Giorgos Posnakidis, Christoforos D. Giannaki, Vassilis Mougios, Marios Pantzaris5, Ioannis Patrikios, Philip C. Calder, Dina K Sari, Gregory G. Bogdanis, George Aphamis Effects of Supplementation with Omega-3 and Omega-6 Poly-unsaturated Fatty Acids and Antioxidant Vitamins, Combined with High-Intensity Functional Training, on Exercise Perfor-mance and Body Composition: A Randomized, Double-blind, Placebo-Controlled Trial. Nutrients, 1;16(17):2914, 2024
  16. Giannaki CD, Sakkas GK, Manconi M. Hadjigeorgiou GM, Bargiotas P. Unfolding the role of exercise in the management of sleep disorders. European Journal of Applied Physiology, 124(9):2547-2560, 2024
  17. Sakkas GK, Giannaki CD, Wilund KR, Karatzaferi C. How to cultivate Sustainable Physical Health and Wellness in Transplant Recipients: The emerging and enduring role of exercise scientists. Current Opinion in Organ Transplantation, 1;29(4):294-298, 2024
  18. Angelos Vlahoyiannis, Eleni Andreou, Panagiotis Bargiotas, George Aphamis, Giorgos K. Sakkas, Christoforos D. Giannaki#. From Diet to Sleep and Psychological State: Insights and Future Perspectives. Clinical Nutrition, 43(6):1676-1677, 2024
  19. Komodromou I, Andreou E., Vlahoyiannis A., Christofidou M., Felekkis K., Pieri M., Giannaki C.D#. Exploring the Dynamic Relationship Between the Gut Microbiome and Body Composition Across the Human Lifespan: A Systematic Review. Nutrients, 2024,  16(5), 660
  20. Angelos Vlahoyiannis, Eleni Andreou, Panagiotis Bargiotas, George Aphamis, Giorgos K. Sakkas, Christoforos D. Giannaki#. The Effect of Chrono-Nutritional Manipulation of Carbohydrate Intake on Sleep Macrostructure: a Randomized Controlled Trial. Clinical Nutrition, 2024,  43(3):858-868
  21. Bettina Wollesen, Mona Herden, Nikola Lamberti, Christoforos D. Giannaki. Defining and reporting exercise intensity in interventions for older adults: a modified Delphi process. European Review of Aging and Physical Activity, 2024, 2;21(1):3
  22. Krase A, Giannaki CD, Flouris AD, Liakos D, Stefanidis I, Karatzaferi C, Sakkas GK. The acute, combined, and separate effects of cold hemodialysis and intradialytic exercise in insulin sensitivity and glucose disposal. ASAIO Journal, 2024, 70(5), pp. 436–441
  23. Bogdanis G and Giannaki CD. Dietary Supplements and Musculoskeletal Health and Function. Nutrients, 2023, 15(20), 4404
  24. Zavros A, Andreou E, Aphamis G, Bogdanis G, Sakkas GK, Roupa Z, Giannaki CD#. The Effects of Zinc and Selenium Co-Supplementation on Resting Metabolic Rate, Thyroid Function, Physical Fitness, and Functional Capacity in Overweight and Obese People under a Hypocaloric Diet: A Randomized, Double-Blind, and Placebo-Controlled Trial. Nutrients, 2023, 15(14), 3133
  25. Giannaki CD, Grigoriou SS, George K, Karatzaferi C, Zigoulis P, Lavdas E, Chaniotis D, Stefanidis I, Sakkas GK. Nine months of hybrid intradialytic exercise training improve ejection fraction and cardiac autonomic nervous system activity in hemodialysis patients. Sports, 2023, 11(4), 79
  26. Posnakidis G, Aphamis G, Giannaki CD#, Mougios V, Aristotelous P, Bogdanis G. The Addition of High-Load Resistance Exercises to a High-Intensity Functional Training Program Elicits Further Improvements in Body Composition and Strength: A Randomized Trial. Sports, 2022, 13;10(12):207
  27. Ataei L, Giannaki CD, Petrou C, Aphamis G. Effect of Tribulus terrestris L. supplementation on Exercise-Induced Oxidative Stress and Delayed Onset Muscle Soreness Markers: A Pilot Study.  Journal of Dietary Supplements, 2022, 8:1-21
  28. Stavrinou P, Aphamis G, Pantzaris M, Sakkas GK, Giannaki CD. Exploring the Associations between Functional Capacity, Cognitive Function and Well-Being in Older Adults. Life, 13;12(7):1042, 2022
  29. Zavros A, Giannaki CD, Roupa Z, Aphamis G, Andreou E. The effects of zinc and selenium supplementation on body composition and thyroid function in overweight-obese individuals: A systematic review. Journal of Dietary Supplements, 9:1-29, 2022
  30. Ataei L, Giannaki CD, Petrou C, Aphamis G. Effect of Tribulus terrestris L. supplementation on Exercise-Induced Oxidative Stress and Delayed Onset Muscle Soreness Markers: A Pilot Study. Journal of Dietary Supplements, 8:1-21, 2022
  31. Gregory C. Bogdanis, Mary E. Nevill, George Aphamis, Pinelopi S. Stavrinou, David G. Jenkins, Christoforos D. Giannaki, Henryk K.A. Lakomy, Clyde Williams. Effects of Oral Creatine Supplementation on Power Output During Repeated Treadmill Sprinting. Nutrients, 8;14(6):1140, 2022
  32. Papaneophytou C., Alabajos-Cea A., Viosca-Herrero E, Calvis C, Costa M., Christodoulides A.E., Kroushovski A., Lapithis A., Maligianni Lapithi M.V.,  Papayiannis I., Christou A., Messeguer R., Giannaki C.D., Felekkis K.  Associations between biomarkers of cartilage and synovial metabolism, risk factors, pain categories and severity in knee osteoarthritis: a pilot study. BMC Musculoskeletal Disorders, 2022,  2;23(1):195
  33. Posnakidis G, Aphamis G, Giannaki CD, Mougios V, Aristotelous P, Samouris G, Bogdanis G. High intensity functional training improves cardiorespiratory fitness and neuromuscular performance without inflammation or excessive muscle damage. Journal of Strength and Conditioning Research, 2022, 36(3):615-623
  34. Pieri M, Theori E, Dweep H, Flourentzou M, Kalampalika F, Maniori MA, Papagregoriou G, Papaneophytou C, Felekkis K. A bovine miRNA, bta-miR-154c, withstands in vitro human digestion but does not affect cell viability of colorectal human cell lines after transfection. FEBS Open Bio. 2022
  35. Stavrinou P, Aphamis G, Andreou E, Pantzaris M, Giannaki CD. Association of body composition with functional capacity and cognitive function in older adults living in nursing homes. Current Aging Science, 2022, 15 (1) 77-82
  36. Krase AA, Terzis G, Giannaki CD, Stasinaki I, Wilkinson TJ, Smith AC, Karatzaferi C, Stefanidis I, Sakkas GK. Seven months of aerobic intradialytic exercise training can prevent muscle loss in haemodialysis patients: an ultrasonography study. International Urology and Nephrology, 2022, 54(2):447-456
  37. Aristotelous P., Stefanakis M., Pantzaris M., Pattichis C.S., Calder P.C.,   Patrikios I.S., Sakkas G.K. and. Giannaki C.D. The Effects of Specific Omega-3 and Omega-6 Polyunsaturated Fatty Acids and Antioxidant Vitamins on Gait and Functional Capacity Parameters in Patients with Relapsing-Remitting Multiple Sclerosis. Nutrients, 2021, 13(10):3661
  38. Grigoriou S, Giannaki CD, George K, Karatzaferi C, Zigoulis P, Eleftheriadis T, Stefanidis I, Sakkas GK. A single bout of hybrid intradialytic exercise did not affect left-ventricular function in exercise-naĂŻve dialysis patients: a randomized, cross-over trial. International Urology and Nephrology, 2021, 54(1):201-208
  39. Vlahoyiannis A, Giannaki CD, Sakkas GK, Aphamis G, Andreou E.  A systematic review, meta -analysis and meta-regression on the effect of carbohydrates on sleep. Nutrients, 2021, 13(4) 1283
  40. Grigoriou S, Krase A, Karatzaferi C, Giannaki CD, Lavdas E, Mitrou G, Bloxham S, Stefanidis I, Sakkas GK. Long-term intradialytic hybrid exercise training on fatigue symptoms in patients receiving hemodialysis therapy. International Urology and Nephrology, 2021, 53(4):771-784
  41. Vlahoyiannis A, Ala Eddin D, Aphamis G, Giannaki CD. The effect of evening cycling at different intensities on sleep in healthy young adults with intermediate chronobiological phenotype: A randomized, cross-over trial. Journal of Sports Sciences. 2021, 39(2):192-199
  42. Felekkis K and Papaneophytou C. Challenges in using circulating micro-rnas as biomarkers for cardiovascular diseases. International Journal of Molecular Sciences. 2020, 21(2), 561.
  43. Savvides A, Giannaki CD, Vlahoyiannis A, Stavrinou P, Aphamis G. Effects of mild dehydration on archery performance, subjective feelings and heart rate during a competition simulation. Journal of Functional Morphology and Kinesiology. 2020, 5(3),67
  44. Vlahoyiannis A, Aphamis G, Bogdanis G, Sakkas GK, Andreou E, Giannaki CD. Deconstructing athletes’ sleep: a systematic review of the influence of age, sex, athletic expertise, sport type and season on sleep characteristics. Journal of Sport and Health Sciences, 2021, 10(4):387-402
  45. Stavrinou P, Andreou E, Pantzaris M, Aphamis G, Ioannou M, Patrikios IS, Giannaki CD. The effects of a 6-month high dose omega-3 and omega-6 polyunsaturated fatty acids and antioxidant vitamins supplementation on functional capacity and cognitive function in older adults with mild cognitive impairment. Nutrients. 2020, 12 (2):325
  46. Stavrinou P, Giannaki CD, Andreou E, Aphamis G. Prevalence of hypohydration in adolescents during the school day in Cyprus: seasonal variations. Eastern Mediterranean Health Journal, 2020, 26 (9): 1034-1041.
  47. Aristotelous P, Stefanakis M, Pantzaris M, Pattichis C, Hadjigeorgiou GM, Giannaki CD. Associations between functional capacity, isokinetic leg strength, sleep quality and cognitive function in Multiple Sclerosis patients: a cross-sectional study. Postgraduate Medicine. 2019, 131 (7): 453-460
  48. Evangelou C, Kartakoullis N, Hadjicharalambous M, Aphamis G, Hadjimarkou M, Sakkas GK, Giannaki CD. Depressive symptoms, sleep quality, physical fitness and fatigue among adult women with different obesity status. Sport Sciences for Health, 2019, 15 (3): 605-614.
  49. Aphamis G, Stavrinou P, Andreou E, Giannaki CD. Hydration status, total water intake and subjective feelings of adolescents living in a hot environment, during a typical school day. International Journal of Adolescent Medicine and Health, 2019, 33, no. 4, 2021, 20180230
  50. Aristotelous P, Aphamis G, Sakkas GK, Andreou E, Pantzaris M, Kyprianou T, Hadjigeorgiou GM, Manconi M, Giannaki CD. Effects of controlled dehydration on sleep quality and quantity: a polysomnographic study in healthy young adults. Journal of Sleep Research. 2019, 18(3):e12662
  51. Vlachoyiannis A, Aphamis G, Andreou E, Samoutis G, Sakkas GK, Giannaki CD. Effects of high vs. low glycemic index of post-exercise meals on sleep and exercise performance: a randomized, double-blind, counterbalanced polysomnographic study. Nutrients, 2018, 18;10(11). pii: E1795