A Pyle stop is a type of short, optional deep decompression stop performed by scuba divers at depths well below the first decompression stop mandated by a conventional dissolved phase decompression algorithm, such as the US Navy or Bühlmann decompression algorithms. They were named after Richard Pyle, an American ichthyologist from Hawaii,[1] who found that they prevented his post-dive fatigue symptoms after deep dives to collect fish specimens.[2]
The ascent pattern has become known as Pyle stops, or "deep stops" since the late 1990s.[3][4]
These stops were developed by Pyle based on personal experience,[2] and have had a significant influence on decompression theory and practice in the following years.[citation needed]
Deep
was invoked but never defined (see the help page).