Changes of brain-derived neurotrophic factor (BDNF) levels after different exercise protocols: a systematic review of clinical studies in Parkinson's disease.

Brain-Derived Neurotrophic Factor (BDNF) serum levels are reduced in patients with Parkinson's Disease (PD). This study aimed to assess the effect of exercise intensity, volume and type on BDNF levels in patients with PD. We searched clinicaltrials.