Physical Activity Effects on Stroke Recovery

Physical activity is a cornerstone of post-stroke rehabilitation, exerting benefits at molecular, cellular and systems levels to support motor and cognitive recovery. Aerobic, resistance and task-specific training promote angiogenesis, neurogenesis and synaptic plasticity, driven in part by upregulation of neurotrophic factors such as brain-derived neurotrophic factor. Exercise modulates inflammatory processes, attenuating microglial activation and apoptosis while enhancing oligodendrogenesis and remyelination in perilesional white matter. Early initiation and appropriate dosing of physical activity can limit secondary brain injury by improving cerebral perfusion and stabilising the blood–brain barrier. In clinical settings, structured programmes improve balance, gait and upper-limb coordination, and may reduce long-term disability when integrated with pharmacological and technological interventions. Habitual physical activity prior to stroke onset is associated with reduced initial severity and faster functional gains. The development of personalised exercise prescriptions, reflecting stroke subtype, severity and patient comorbidities, is a priority to maximise recovery and quality of life worldwide. Ongoing research continues to refine optimal timing, intensity and modality to harness the brain’s intrinsic capacity for repair and adaptation.

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Physical Activity Effects on Stroke Recovery publication trend

The graph below shows the total number of articles in physical activity effects on stroke recovery across all publications each year (not limited to Nature Index journals).

Technical terms

Neuroplasticity: The capacity of the nervous system to reorganise structure, function and connections in response to experience, learning or injury.

Angiogenesis: The physiological process by which new blood vessels form from existing vasculature, improving tissue perfusion.

Oligodendrogenesis: The generation and maturation of oligodendrocyte precursor cells into myelinating oligodendrocytes, essential for white matter integrity.

Remyelination: The restoration of the myelin sheath around axons, which enhances conduction velocity and neurological function after injury.

Brain-derived neurotrophic factor (BDNF): A neurotrophin that supports neuronal survival, differentiation and synaptic plasticity, often upregulated by physical activity.

References

1. TREM2 mediates physical exercise-promoted neural functional recovery in rats with ischemic stroke via microglia-promoted white matter repair. Journal of Neuroinflammation (2023).
2. Motor Rehabilitation Provides Modest Functional Benefits After Intracerebral Hemorrhage: a Systematic Review and Meta-Analysis of Translational Rehabilitation Studies. Translational Stroke Research (2023).
3. Prestroke physical activity could influence acute stroke severity (part of PAPSIGOT). Neurology (2018).
4. The Effects of Voluntary, Involuntary, and Forced Exercises on Brain-Derived Neurotrophic Factor and Motor Function Recovery: A Rat Brain Ischemia Model. PLOS ONE (2011).
5. Effects of Exercise Intensity on Spatial Memory Performance and Hippocampal Synaptic Plasticity in Transient Brain Ischemic Rats. PLOS ONE (2013).
6. Physical exercise improves functional recovery through mitigation of autophagy, attenuation of apoptosis and enhancement of neurogenesis after MCAO in rats. BMC Neuroscience (2013).
7. Early exercise improves cerebral blood flow through increased angiogenesis in experimental stroke rat model. Journal of NeuroEngineering and Rehabilitation (2013).
8. Early Exercise Protects the Blood-Brain Barrier from Ischemic Brain Injury via the Regulation of MMP-9 and Occludin in Rats. International Journal of Molecular Sciences (2013).
9. Exercise Therapy Downregulates the Overexpression of TLR4, TLR2, MyD88 and NF-κB after Cerebral Ischemia in Rats. International Journal of Molecular Sciences (2013).
10. Physical Exercise as a Diagnostic, Rehabilitation, and Preventive Tool: Influence on Neuroplasticity and Motor Recovery after Stroke. Neural Plasticity (2015).
11. Defining Optimal Aerobic Exercise Parameters to Affect Complex Motor and Cognitive Outcomes after Stroke: A Systematic Review and Synthesis. Neural Plasticity (2016).