Effects of Different Intensities of Endurance Training on Neurotrophin Levels and Functional and Cognitive Outcomes in Post-Ischaemic Stroke Adults: A Randomised Clinical Trial.

Abstract

This study aimed to examine the effects of different intensities of endurance training combined with standard neurorehabilitation on selected blood biomarkers and physical outcomes of post-stroke individuals. We randomised patients with first-episode ischaemic stroke to an experimental group that received 4 × 45 min sessions of moderate-intensity continuous training (MICT) each week and 2 × 45 min of standard rehabilitation each day or to a control group that received 4 × 45 min sessions of low-intensity continuous training (LICT) each week and 2 × 45 min of standard rehabilitation each day. We measured the following outcomes at baseline and 3 weeks after the intervention: aerobic capacity; cognitive and motor function; and blood levels of brain-derived neurotrophic factor (BDNF), glial cell line-derived neurotrophic factor (GDNF), vascular endothelial growth factor A (VEGF-A), insulin-like growth factor-1 (IGF-1), and irisin. We included 52 patients with a mean age of 66.1 ± 8.0 years. After 3 weeks of rehabilitation, there was a clinically significant improvement in the Rivermead Motor Assessment-arm score in the MICT group. The study showed that after 3 weeks, an intervention combining MICT with standard neurorehabilitation was significantly more beneficial in improving aerobic capacity and arm motor function than an intervention combining LICT and standard neurorehabilitation.