Possible Neuroprotective Mechanisms of Physical Exercise in Neurodegeneration.
Level 5 - mechanism / opinion, no new human data
Narrative review focusing on mechanistic reasoning without systematic synthesis or new empirical data
PubMed 32824367 · doi:10.3390/ijms21165895
What was done
Narrative overview synthesizing existing literature on the molecular, cellular, and physiological mechanisms through which physical exercise exerts neuroprotective effects in neurodegenerative diseases.
What was found
The abstract reports no quantitative data or numerical findings. It qualitatively summarizes that physical exercise enhances the production of neurotrophic factors, neurotransmitters, and hormones; supports neuroplasticity, neurogenesis, angiogenesis, and autophagy; and is linked to improvements in cognition, memory, sleep, and mood, alongside reductions in neuroinflammation, stress, and insulin resistance.
Why it matters
Provides a broad theoretical map of the biological pathways that may mediate exercise-induced brain health and neuroprotection.
Limits
As a narrative review, it lacks a systematic search protocol, risk of bias assessment, and quantitative synthesis. The abstract presents purely qualitative mechanistic claims without primary human clinical data or effect sizes.
Cited by
- supports Exercise enhances production of brain-derived neurotrophic factor (BDNF), leading to neurogenesis, synaptogenesis, reduced inflammation, and improved insulin function.