Psikolojik İyi Oluşun Biyolojik Temelleri: Egzersiz ve Dopamin Etkileşiminde Biyopsikolojik Çıktılar

Abstract

Fiziksel egzersizin psikolojik iyi oluşu artırdığına ilişkin yaygın görüş birliğine rağmen, bu yararları yönlendiren özgül dopaminerjik ve nöroplastik mekanizmalar kavramsal açıdan hâlen parçalı bir görünüm sergilemektedir. Bu anlatı derlemesi, farklı egzersiz modaliteleri, ödül işleme süreçleri ve ruh sağlığı çıktıları arasındaki çok katmanlı etkileşimi sentezlemeyi amaçlamaktadır. 2010 yılından bu yana yayımlanan İngilizce literatürü inceleyerek, preklinik hayvan modelleri ile insan klinik/nörogörüntüleme çalışmalarından elde edilen translasyonel kanıtları bütünleştirdik. Sentezlenen veriler, psikolojik iyi oluşun tek boyutlu bir yapı olmadığını; bunun yerine duygudurum, içsel motivasyon, stres dayanıklılığı ve anhedoninin hafifletilmesinden oluşan bileşik bir yapı olduğunu ortaya koymaktadır. Kritik olarak, kanıtlar farklı egzersiz modalitelerinin birbirinden ayrışan nörobiyolojik profiller sergilediğini düşündürmektedir: aerobik egzersiz ve yüksek yoğunluklu aralıklı antrenman (HIIT), ağırlıklı olarak geniş kapsamlı ödülle ilişkili işlemleme ve beyin kaynaklı nörotrofik faktörün (brain-derived neurotrophic factor, BDNF) ekspresyonunu modüle ederken, direnç egzersizi nükleus akkumbens (nucleus accumbens) içindeki dopaminerjik reseptör modülasyonu üzerinde daha hedefe yönelik bir etki göstermektedir. Ayrıca, bu adaptasyonların zamansal dinamikleri de belirgin biçimde farklılık göstermektedir: akut egzersiz esas olarak ödül reaktivitesi ve duygudurumda geçici değişimler oluştururken, kronik sürdürüm kalıcı nöroplastik adaptasyonları kolaylaştırmaktadır. Klinik açıdan, egzersize bağlı dopaminerjik modülasyon, anhedoninin azaltılması ve madde kullanım bozukluklarında relaps kırılganlığının düşürülmesi için yardımcı bir müdahale olarak önemli bir potansiyel taşımaktadır. Bununla birlikte, literatürün yüksek derecede heterojen olması ve insan çalışmalarının dopaminerjik etkinliğin dolaylı belirteçlerine sıklıkla dayanması nedeniyle, kritik translasyonel sınırlılıklar mevcuttur. Bu derleme, egzersiz-beyin bağlantısını tek bir nörokimyasal yola indirgemek yerine, hedefe yönelik fiziksel aktivitenin karmaşık ve birbiriyle etkileşim hâlindeki dopaminerjik ve nöroplastik yollar aracılığıyla çok boyutlu psikolojik iyi oluşu nasıl destekleyebileceğini haritalandıran bütünleştirici bir çerçeve sunmaktadır.

Keywords

• dopaminerjik sinyalizasyon
• ödül işleme
• nöroplastisite
• BDNF
• anhedoni
• akut ve kronik egzersiz
• translasyonel kanıt
• psikolojik iyi oluş

Biological Foundations of Psychological Well-being: Biopsychological Outcomes of the Exercise-Dopamine Interplay

Abstract

Despite widespread consensus that physical exercise enhances psychological well-being, the specific dopaminergic and neuroplastic mechanisms driving these benefits remain conceptually fragmented. This narrative review aims to synthesize the multi-layered interplay between distinct exercise modalities, reward processing, and mental health outcomes. Examining English-language literature published since 2010, we integrated translational evidence from preclinical animal models and human clinical/neuroimaging trials. The synthesized data underscores that psychological well-being is not a monolithic construct, but a composite of mood, intrinsic motivation, stress resilience, and the amelioration of anhedonia. Crucially, evidence suggests that distinct exercise modalities exhibit divergent neurobiological profiles: aerobic and high-intensity interval training (HIIT) predominantly modulate broad reward-related processing and brain-derived neurotrophic factor (BDNF) expression, whereas resistance training demonstrates a targeted influence on dopaminergic receptor modulation within the nucleus accumbens. Furthermore, the temporal dynamics of these adaptations differ significantly: acute exercise primarily induces transient shifts in reward reactivity and mood, whereas chronic adherence facilitates lasting neuroplastic adaptations. Clinically, exercise-induced dopaminergic modulation shows significant promise as an adjunctive intervention for mitigating anhedonia and reducing relapse vulnerability in substance use disorders. However, critical translational limits exist, as the literature is highly heterogeneous and human trials frequently rely on indirect markers of dopaminergic activity. Rather than reducing the exercise-brain connection to a single neurochemical pathway, this review provides an integrative framework that maps how targeted physical activity may support multidimensional psychological well-being through complex, interacting dopaminergic and neuroplastic pathways.

Keywords

• dopaminergic signaling
• reward processing
• neuroplasticity
• BDNF
• anhedonia
• acute versus chronic exercise
• translational evidence
• psychological well-being

References

1. Basso, J. C., & Suzuki, W. A. (2017). The effects of acute exercise on mood, cognition, neurophysiology, and neurochemical pathways: A review. Brain Plasticity, 2(2), 127-152. https://doi.org/10.3233/BPL-160040
2. Bastioli, G., Arnold, J. C., Mancini, M., Mar, A. C., Gamallo-Lana, B., Saadipour, K., Chao, M. V., & Rice, M. E. (2022). Voluntary exercise boosts striatal dopamine release: Evidence for the necessary and sufficient role of BDNF. Journal of Neuroscience, 42(23), 4725–4736. https://doi.org/10.1523/JNEUROSCI.2273-21.2022
3. Bothe, N., Zschucke, E., Dimeo, F., Heinz, A., Wüstenberg, T., & Ströhle, A. (2013). Acute exercise influences reward processing in highly trained and untrained men. Medicine & Science in Sports & Exercise, 45(3), 583–591. https://doi.org/10.1249/MSS.0b013e318275306f
4. Chaddock, L., Erickson, K. I., Prakash, R. S., VanPatter, M., Voss, M. W., Pontifex, M. B., Raine, L. B., Hillman, C. H., & Kramer, A. F. (2010). Basal ganglia volume is associated with aerobic fitness in preadolescent children. Developmental Neuroscience, 32(3), 249–256. https://doi.org/10.1159/000316648
5. Chen, C., Nakagawa, S., An, Y., Ito, K., Kitaichi, Y., & Kusumi, I. (2017). The exercise-glucocorticoid paradox: How exercise is beneficial to cognition, mood, and the brain while increasing glucocorticoid levels. Frontiers in Neuroendocrinology, 44, 83-102. https://doi.org/10.1016/j.yfrne.2016.12.001
6. Esch, T., & Stefano, G. B. (2010). Endogenous reward mechanisms and their importance in stress reduction, exercise and the brain. Archives of Medical Science, 6(3), 447–455. https://doi.org/10.5114/aoms.2010.14269
7. Fernandes, M. S. de S., Ordônio, T. F., Santos, G. C. J., Santos, L. E. R., Calazans, C. T., Gomes, D. A., & Santos, T. M. (2020). Effects of physical exercise on neuroplasticity and brain function: A systematic review in human and animal studies. Neural Plasticity, 2020, 8856621. https://doi.org/10.1155/2020/8856621
8. Flack, K. D., Ufholz, K., Johnson, L., & Roemmich, J. N. (2019). Increasing the reinforcing value of exercise in overweight adults. Frontiers in Behavioral Neuroscience, 13, 265. https://doi.org/10.3389/fnbeh.2019.00265

9. Gorrell, S., Shott, M. E., & Frank, G. K. W. (2022). Associations between aerobic exercise and dopamine-related reward-processing: Informing a model of human exercise engagement. Biological Psychology, 171, 108350. https://doi.org/10.1016/j.biopsycho.2022.108350
10. Greenwood, B. N., & Fleshner, M. (2011). Exercise, stress resistance, and central serotonergic systems. Exercise and Sport Sciences Reviews, 39(3), 140-149. https://doi.org/10.1097/JES.0b013e31821f7e45
11. Hearing, C. M., Chang, W. C., Szuhany, K. L., Deckersbach, T., Nierenberg, A. A., & Sylvia, L. G. (2016). Physical exercise for treatment of mood disorders: A critical review. Current Behavioral Neuroscience Reports, 3(4), 350–359. https://doi.org/10.1007/s40473-016-0089-y
12. Heijnen, S., Hommel, B., Kibele, A., & Colzato, L. S. (2016). Neuromodulation of aerobic exercise—A review. Frontiers in Psychology, 6, 1890. https://doi.org/10.3389/fpsyg.2015.01890
13. Hird, E. J., Slanina-Davies, A., Lewis, G., Hamer, M., & Roiser, J. P. (2024). From movement to motivation: A proposed framework to understand the antidepressant effect of exercise. Translational Psychiatry, 14(1), 273. https://doi.org/10.1038/s41398-024-02922-y
14. Huppertz, C., Bartels, M., Groen-Blokhuis, M. M., Dolan, C. V., de Moor, M. H. M., Abdellaoui, A., ... & de Geus, E. J. C. (2014). The dopaminergic reward system and leisure time exercise behavior: A candidate allele study. BioMed Research International, 2014, 591717. https://doi.org/10.1155/2014/591717
15. Leventhal, A. M. (2012). Relations between anhedonia and physical activity. American Journal of Health Behavior, 36(6), 860–872. https://doi.org/10.5993/AJHB.36.6.12
16. Mikkelsen, K., Stojanovska, L., Polenakovic, M., Bosevski, M., & Apostolopoulos, V. (2017). Exercise and mental health. Maturitas, 106, 48-56. https://doi.org/10.1016/j.maturitas.2017.09.003
17. Robertson, C. L., Ishibashi, K., Chudzynski, J., Mooney, L. J., Rawson, R. A., Dolezal, B. A., ... & London, E. D. (2016). Effect of exercise training on striatal dopamine D2/D3 receptors in methamphetamine users during behavioral treatment. Neuropsychopharmacology, 41(6), 1629–1636. https://doi.org/10.1038/npp.2015.331
18. Ruiz-Tejada, A., Neisewander, J. L., & Katsanos, C. S. (2022). Regulation of voluntary physical activity behavior: A review of evidence involving dopaminergic pathways in the brain. Brain Sciences, 12(3), 333. https://doi.org/10.3390/brainsci12030333
19. Sleiman, S. F., Henry, J., Al-Haddad, R., El Hayek, L., Abou Haidar, E., Stringer, T., ... & Chao, M. V. (2016). Exercise promotes the expression of brain derived neurotrophic factor (BDNF) through the action of the ketone body β-hydroxybutyrate. eLife, 5, e15092. https://doi.org/10.7554/eLife.15092
20. Smith, M. A., Fronk, G. E., Abel, J. M., Lacy, R. T., Bills, S. E., & Lynch, W. J. (2018). Resistance exercise decreases heroin self-administration and alters gene expression in the nucleus accumbens of heroin-exposed rats. Psychopharmacology, 235(4), 1245–1255. https://doi.org/10.1007/s00213-018-4840-9
21. Strickland, J. C., Abel, J. M., Lacy, R. T., Beckmann, J. S., Witte, M. A., Lynch, W. J., & Smith, M. A. (2016). The effects of resistance exercise on cocaine self-administration, muscle hypertrophy, and BDNF expression in the nucleus accumbens. Drug and Alcohol Dependence, 163, 186–194. https://doi.org/10.1016/j.drugalcdep.2016.04.019
22. Tyler, J., Podaras, M., Richardson, B., Roeder, N., Hammond, N., Hamilton, J., ... & Thanos, P. K. (2023). High intensity interval training exercise increases dopamine D2 levels and modulates brain dopamine signaling. Frontiers in Public Health, 11, 1257629. https://doi.org/10.3389/fpubh.2023.1257629
23. Fang, C. L., Zheng, G. H., Fang, C. L., & Zheng, G. H. (2024). Impact of physical exercise on the executive function and mental health of heroin addicts. Exercise Science, 33(4), 477-493.
24. Wardle, M. C., Lopez-Gamundi, P., & LaVoy, E. C. (2018). Effects of an acute bout of physical exercise on reward functioning in healthy adults. Physiology & Behavior, 194, 552–559. https://doi.org/10.1016/j.physbeh.2018.07.010
25. Li, Y., Chen, X., Wang, T., Zou, W., Tang, Y., & Li, Z. (2024). Exercise as a promising adjunct treatment for methamphetamine addiction: Advances in understanding neuroplasticity and clinical applications. Brain Sciences, 15(12), 1339. https://doi.org/10.3390/brainsci15121339