Pursed-lip breathing
At least one paper behind this review states what this option was measured against. That is not a ranking, and this option carries no evidence profile of its own.
- pre-sleep wind-downSleep · 1 paper put it here (inferred by the extraction, not stated in the paper)
Inspiration through the nose, expiration through the mouth while pursing the lips. Frequency: 0.1 Hz (6 breaths per minute). Duration: 3 minutes. Inspiration to expiration ratio: 1:2. Posture: Seated comfortably with upper body and arms supported.
Psychophysiological responses to various slow, deep breathing techniques.Sit on a chair with feet supported, inhale slowly through the nose, purse lips, exhale slowly through pursed lips.
Breathing exercises and pranayamas to decrease perceived exertion during breath-holding while locked-down due to COVID-19 online randomized study
Nothing states what this option's dose measures — no library step prescribes this option and its review states no dose unit.
No row states a dose or a time for this option.
Equipment is a property of the movement and is authored, never derived from the evidence corpus (docs/research/round2/ROUND2_KNOWN_CORRECTIONS.md §1). This option resolves to no catalogue exercise, so nothing has authored it yet.
R8's level field records who was eligible for the trial, not what a person needs before trying the practice, so it is not carried here.
No row states how to make this option harder or easier.
The papers behind this option report nothing on contraindications, which is not the same as saying there are none.
No row describes the setting.
- Diaphragmatic / abdominal — a paper measured this option against it“Diaphragmatic Breathing Exercises (DBE” · M. Shukla, Diksha Chauhan, Ritu Raj (2020) · 10.1016/j.ctcp.2020.101248
A paper measuring one option against another does not make the two interchangeable, and it does not say which to choose. These are listed as what the papers did, and nothing here proposes a substitution.