Parkinson's disease and intensive exercise therapy - An updated systematic review and meta-analysis.

This systematic review and meta-analysis updated a 2015 review on exercise therapy in Parkinson's disease, adding 33 new randomized controlled trials. In total it covered 18 resistance training (RT) studies, 14 endurance training (ET) studies, and 1 study of other intensive exercise modalities (OITM), building on the 8, 6, and 4 studies respectively from the earlier review. All three exercise types were found feasible and did not worsen PD symptoms. Pooled analyses showed RT improved muscle strength (SMD 0.83), functional capacity via Timed Up and Go (SMD -0.62), and quality of life (SMD -0.41).

ET improved cardiorespiratory fitness (SMD 0.27) and 6-Minute Walk Test performance (SMD 0.89), with smaller, less certain effects on motor symptoms (UPDRS-III) and Timed Up and Go. The authors note inconsistencies across studies for some functional and mood outcomes, meaning conclusions there should be treated cautiously.

This review looked at whether structured exercise programs help people with Parkinson's disease. Researchers combined results from 33 new clinical trials, along with earlier ones, covering 18 resistance training studies, 14 endurance (cardio) training studies, and 1 study of other intensive exercise types.

All exercise types tested were feasible for participants and did not make Parkinson's symptoms worse. When results were combined, resistance training (like weight lifting) showed improvements in muscle strength, in how quickly people could get up and walk (Timed Up and Go test), and in quality of life. Endurance training (like cycling or walking programs) improved cardiorespiratory fitness and distance walked in six minutes, with smaller and less certain effects on motor symptoms and mobility testing. The review notes that findings on things like balance and mood were inconsistent across the included studies, so those results should be viewed cautiously.

This means resistance and endurance training show fairly consistent benefits for strength and fitness measures, while other outcomes need more research before firm conclusions can be drawn.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This updated systematic review and meta-analysis substantially expands the evidence base from the 2015 Uhrbrand review, incorporating 33 new RCTs for a total of 18 RT, 14 ET, and 1 OITM studies in people with Parkinson's disease. All modalities were reported as feasible and did not appear to worsen PD symptoms, though the abstract does not detail formal risk-of-bias or adverse event assessment beyond feasibility and safety framing. Pooled effect sizes indicate RT had solid effects on muscle strength (SMD 0.83), TUG (SMD -0.62), and quality of life (SMD -0.41).

ET showed effects on cardiorespiratory fitness (SMD 0.27) and 6-Minute Walk Test (SMD 0.89), with smaller, CI-crossing-zero effects on TUG and both on- and off-medication UPDRS-III scores, indicating uncertain motor symptom impact. Findings on balance and depressive symptoms were described as inconsistent across studies, warranting cautious interpretation. Only one OITM study was identified, limiting conclusions for that category.

Overall, RT and ET show the most consistent pooled benefits, but heterogeneity and inconsistency across secondary outcomes mean the evidence, while expanded, remains mixed in certainty for several clinically relevant domains.