Conch blowing could help to alleviate sleep apnoea, study suggests
Conch blowing, also known as shankh blowing, is an ancient ritual that involves breathing in deeply and exhaling into the spiral-shaped shell.
The practice could improve sleep for patients with obstructive sleep apnoea (OSA), which usually needs to be treated with uncomfortable machinery, according to the research.
OSA occurs when breathing starts and stops during sleep. Symptoms include loud snoring and making gasping or choking noises.
Thirty people living with the disorder and aged between 19 and 65 were involved in the trial, led by researchers at the Eternal Heart Care Centre and Research Institute in Jaipur, India.
About half of the group were taught how to use the shell, while the others carried out deep breathing exercises. Both groups were encouraged to practise their techniques for at least 15 minutes, five days a week.
Six months later, the trial found that those who had practiced shankh blowing were 34% less sleepy during the day. They also had higher blood oxygen levels during the night, and four to five fewer OSA episodes an hour on average.
'Shankh blowing is a simple low-cost breathing technique that could help improve sleep and reduce symptoms without the need for machines or medication,' said Dr Krishna K Sharma, who led the research.
'The way the shankh is blown is quite distinctive. This action creates strong vibrations and airflow resistance, which likely strengthens the muscles of the upper airway, including the throat and soft palate, areas that often collapse during sleep in people with OSA.'
The most common form of treatment for sleep apnoea is a continuous positive airway pressure (Cpap) machine, which involves patients wearing a mask that blows pressurised air into the nose and throat while asleep. Previous research has also found that playing a woodwind instrument could help with the condition.
Although the machines are effective, they can be uncomfortable, leading the researchers to suggest that shankh blowing could be a promising alternative.
A larger trial involving several hospitals is being planned.
'The findings of this trial are encouraging, but the small scale of the trial means it's too soon to say for certain that conch blowing can help people manage their obstructive sleep apnoea,' said Dr Erika Kennington, the head of research and innovation at Asthma + Lung UK.
'It's also not clear from this research why blowing through a conch shell regularly might improve someone's symptoms. It would be good to see the conch blowing approach tested on a larger scale and compared with other proven strategies, such as limiting alcohol, staying active and maintaining good bedtime habits.
'OSA is a long-term condition, but with the right treatments and lifestyle changes, people can make a real difference to their symptoms.'
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