Nordic Walking for Gait and Balance in Parkinson's Disease: A Review of the Evidence

We're always on the lookout for effective, evidence-based interventions to help our patients with Parkinson's disease. Today, let's talk about Nordic walking. It's been gaining popularity, and for good reason. A recent systematic review and meta-analysis gives us a clearer picture of its benefits, and the findings are worth discussing. First, what exactly is Nordic walking? It's a low-impact aerobic exercise that involves walking with specially designed poles. The poles are used to engage the upper body, turning a simple walk into a full-body workout. The technique is relatively easy to learn, and it's a safe and inexpensive activity that can be done almost anywhere. Now, let's get to the evidence. The 2022 systematic review and meta-analysis by Salse-Batán and colleagues looked at 12 randomized controlled trials. They found that Nordic walking led to clinically meaningful improvements in walking ability. This is a significant finding, as gait impairment is a major challenge for our patients. The review also showed that Nordic walking had a greater impact on gait parameters than free walking. Specifically, the meta-analysis showed a standardized mean difference (SMD) of 0.62 in favor of Nordic walking for the 6-Minute Walk Test, indicating a moderate effect size. For gait speed, the SMD was 0.43, a small to moderate effect. However, the review did not find clinically significant changes in global motor impairment (as measured by the UPDRS-III), functional mobility (Timed Up and Go test), or balance (Berg Balance Scale). This is an important distinction to make. While Nordic walking is great for improving walking, it may not be the best choice for addressing other motor symptoms. This helps us to tailor our interventions and manage patient expectations. So, how do we apply this in the clinic? The reviewed studies provide some useful parameters. Most programs lasted between 6 and 24 weeks, with sessions 2-3 times per week. Each session was typically 45-60 minutes long, including a warm-up and cool-down. The intensity was generally moderate, around 60-80% of heart rate reserve or a 13-17 on the Borg Rating of Perceived Exertion (RPE) scale. When it comes to patient selection, Nordic walking is suitable for individuals with mild to moderate Parkinson's disease (Hoehn and Yahr stages 1-3). It's important to assess each patient's balance and cognitive function to ensure their safety. Contraindications are similar to other forms of moderate-intensity exercise and would include unstable cardiovascular conditions or severe musculoskeletal issues.