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New research presented at The Physiological Society's Long COVID: Mechanisms, Risk Factors, and Recovery on 22 – 23 February shows that a small handheld breathing device helped reduced breathlessness and improved physical fitness of people with long COVID. The low cost, home-based rehabilitation programme increased the strength of respiratory muscles speeding up the rate of recovery from COVID-19.

Approximately, one in ten people recovering from COVID-19 experience long COVID (reports on this figure still vary), which negatively impacts quality of life. Many people with long COVID feel breathless, tired and can have difficulties performing basic tasks of daily living.

The new intervention improved respiratory health and fitness levels of people with long COVID by training the muscles that you use to breath. Training the breathing muscles strengthens them just like other muscles in the body. Participants felt less breathless, stronger, fitter, flonase rx vs otc and could move around more easily, similar to pre-COVID levels.

148 participants took part in the study. They were recruited through social media and included a few discharged hospital patients. They were randomised into intervention and control groups.

Participants were provided with their own small handheld device to do breathing exercises three times a week for about 20 minutes over eight weeks. They would breathe into the device as deeply as they could for as long as they could. The device would then feedback to the user. The results were compared with participants in a control group who had no intervention.

Breathlessness was reduced by 33%, twice the level considered clinically meaningful, in the intervention group compared with the control group. Estimated fitness increased by approximately 10% and respiratory strength increased by approximately 36% in the intervention group compared to control group. The health improvements were 2-14 times greater for the intervention group compared to the control group.

The intervention was developed by a UK-wide team of breathing experts, who have worked with people with many types of respiratory conditions such as chronic obstructive pulmonary disease, asthma and cystic fibrosis. The clinical benefits suggest the programme should be considered for wider implementation as part of COVID-19 recovery strategies.

One-to-one interviews were carried out to evaluate participants' experiences of COVID, recovery from it and the impact of the inspiratory muscle training. Researchers assessed breathlessness, quality of life, the strength of the respiratory muscles and estimated aerobic fitness.

The study was conducted during various phases of UK-wide COVID-19 restrictions and lockdowns. Conducting it entirely remotely via online video conferencing limited the robustness of the measures the research team could use.

It's vital we develop safe and effective home-based rehabilitation methods to help people recover quickly and fully from COVID-19. Breathing muscle training enabled people to return to activities they had been unable to do for weeks or months, providing physical and mental health benefits. The unsupervised nature of this method and the relatively low cost of the devices could be used to ease the strain on the NHS."

Professor Melitta McNarry, the presenter and lead author, University of Swansea, UK

Further funding is needed to implement this rehabilitation programme in collaboration with healthcare providers to assess its feasibility in a real-world setting.