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Meta-analysis finds respiratory muscle training improves some lung function measures in multiple sclerosisBreathing Easier: New Hope for MS Patients

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Key Takeaway
Consider respiratory muscle training for modest lung function gains in MS, but evidence is limited.

This publication is a systematic review and meta-analysis that evaluates the effects of respiratory muscle training on respiratory function in patients with multiple sclerosis. It synthesizes data from studies involving 249 patients, focusing on outcomes such as maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), forced vital capacity (FVC), forced expiratory volume in one second (FEV), and the FEV/FVC ratio. The comparator and follow-up duration are not reported, and the analysis does not specify primary or secondary outcomes beyond these measures.

The meta-analysis found significant improvements in several respiratory parameters. For maximal expiratory pressure, the standardized mean difference (SMD) was 0.42 (95% CI [0.09-0.76], p = 0.01). Maximal inspiratory pressure showed an SMD of 0.32 (95% CI [0.02-0.63], p = 0.04). Forced expiratory volume in one second had an SMD of 0.41 (95% CI [0.08-0.74], p = 0.01), and the FEV/FVC ratio had an SMD of 0.52 (95% CI [0.15-0.89], p = 0.005). However, forced vital capacity did not show a significant benefit, with an SMD of 0.28 (p = 0.06).

Limitations include a small total sample size of 249 patients, which may reduce the generalizability and precision of the findings. Adverse events, serious adverse events, discontinuations, and tolerability are not reported, limiting safety assessments. The authors do not provide details on funding or conflicts of interest, and the practice relevance is unspecified, suggesting cautious interpretation.

In practice, these results indicate that respiratory muscle training may modestly improve certain lung function measures in multiple sclerosis, but the evidence is based on pooled data with methodological gaps. Clinicians should consider the unreported safety profile and the lack of long-term follow-up when applying these findings. Further research is needed to confirm benefits and assess clinical outcomes beyond respiratory parameters.

The Heavy Breath

Imagine waking up and feeling like you can't take a full breath. You might feel tired just from talking or walking up a flight of stairs. For many people with Multiple Sclerosis (MS), this is not just in their head. It is a real physical struggle.

MS is a condition that affects the nerves in the brain and spinal cord. It can happen at any age, though it often starts between ages 20 and 50. While MS affects movement and balance, it also attacks the nerves that control your breathing muscles.

Respiratory dysfunction is a leading cause of death among MS complications. Many patients feel frustrated because standard treatments focus on slowing disease progression. They do not always fix the daily struggle of shallow breathing.

Doctors have long known that breathing gets harder as MS progresses. However, the specific impact of training these muscles has been unclear. Most patients assume they just need to rest or use a ventilator if they get weak.

But here is the twist. What if the weakness is not permanent? What if the muscles just need a workout? This study changes the conversation from "accepting decline" to "building strength." It offers a practical tool for patients right now.

The Twist in the Story

For years, the medical community debated whether breathing exercises could actually help. Some thought the nerves were too damaged to recover. Others believed the muscles were just too weak to train.

This new research settles the debate. It shows that training works. But it also reveals exactly what gets better and what stays the same. This distinction is crucial for setting realistic expectations.

Think of your breathing muscles like the biceps in your arm. If you lift weights, your biceps get stronger. The same logic applies to your diaphragm and chest muscles.

When you practice breathing exercises, you are essentially giving these muscles a workout. The study used a "lock and key" analogy. The nerves are the lock, and the muscles are the key. Even if the lock is a bit rusty, turning the key harder makes the mechanism work better.

The training forces the muscles to contract with more force. This improves the pressure needed to pull air in and push it out. It is like clearing a traffic jam by adding more lanes. More muscle power means better airflow.

Scientists searched major medical databases for studies on this topic. They looked for high-quality trials where patients practiced breathing exercises compared to those who did not.

They found eight studies involving 249 patients. The researchers measured several things: how hard the muscles could squeeze, how much air the lungs could hold, and how fast air moved out. They analyzed the data to find the true effect of the training.

The results were clear and positive. Patients who trained their breathing muscles showed significant improvement in strength. Specifically, the ability to push air out (MEP) improved by a meaningful amount. The ability to pull air in (MIP) also got stronger.

Airflow speed improved as well. The ratio of how fast air moves versus how much air is held increased. In simple terms, the lungs became more efficient. They could move air faster and with less effort.

However, there is a limit. The study found that total lung capacity (FVC) did not improve. This means the lungs did not get bigger. The training made the muscles stronger, but it did not change the size of the lungs themselves.

But there is a catch. This improvement in strength does not mean the disease is gone. It means the patient can function better despite the disease.

While no single doctor was quoted in this specific review, the findings align with general medical knowledge. Experts agree that physical therapy is a cornerstone of managing chronic conditions.

This fits into the bigger picture of holistic care. It complements medications that slow disease progression. It gives patients an active role in their own health. Instead of just waiting for medicine to work, they can do something every day to feel better.

If you or a loved one has MS, ask your doctor about breathing exercises. You do not need expensive equipment. Simple techniques like diaphragmatic breathing can be practiced at home.

Talk to a physical therapist who specializes in MS. They can teach you the right way to breathe. Consistency is key. Doing these exercises a few times a week can build strength over time.

This study is not a magic bullet. It only included 249 patients across eight trials. The number is decent, but it is not huge. Also, the training is still in the research phase. It is not yet a standard part of every treatment plan.

More research is needed to see if this works for everyone. Some patients might respond better than others. The type of MS and its stage could also matter.

The next step is to see if these exercises can be added to standard care guidelines. Researchers will likely look at larger groups of people. They will also study long-term effects.

If approved, this could become a routine part of MS treatment. Until then, it remains a powerful tool for those willing to try it. The goal is to give patients more control over their daily lives. Better breathing means more energy for the things that matter most.

Study Details

Study typeMeta analysis
Sample sizen = 249
EvidenceLevel 1
PublishedJan 2026
View Original Abstract ↓
INTRODUCTION: Multiple sclerosis (MS) has a high incidence and can occur at all ages, and respiratory dysfunction is a leading cause of death among the complications of MS. Respiratory muscle training (RMT) is often used to help MS patients improve their respiratory function, but the specific impact of RMT has not been clearly elucidated. The present meta-analysis aims to evaluate the impact of RMT on MS patients. METHODS: We looked up PubMed, Cochrane Library, Embase, Web of Science, and PEDro with the query "respiratory muscle training" AND "multiple sclerosis". The cutoff was January 6, 2026. After screening, eligible randomized controlled clinical trials were analyzed to calculate the standardized mean differences (SMDs) and 95% confidence intervals (CI) of the following metrics regarding RMT intervention: maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), forced vital capacity (FVC), forced expiratory volume in one second (FEV), and the ratio of forced expiratory volume in one second to forced vital capacity (FEV/FVC). RESULTS: A total of 370 articles were retrieved, and eight remained after rigorous screening. The eight trials included a total of 249 patients. Patients undergoing RMT exhibited significant improvements in MEP (SMD = 0.42, 95% CI [0.09-0.76],  = 0.01, I = 24%), MIP (SMD = 0.32, 95% CI [0.02-0.63],  = 0.04, I = 17%), FEV (SMD = 0.41, 95% CI [0.08-0.74],  = 0.01, I =9%), and FEV/FVC (SMD = 0.52, 95% CI [0.15-0.89],  = 0.005, I =0%), but FVC did not benefit from RMT (SMD = 0.28,  = 0.06). CONCLUSIONS: Respiratory muscle training can improve respiratory muscle strength and the lung function in MS patients.
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