Following this puts new work involving it at the top of your briefing, with a note saying why it is there. Links are taken from the source record, never inferred.
This is a registry record for a planned interventional trial with no results posted; enrollment has not yet begun, making it an early-stage announcement of intent rather than evidence of efficacy.
This is a completed clinical trial registry record with no posted results; the study design and enrollment are described but outcomes are not yet reported.
This is an active clinical trial registration with no results reported; the evidence base is a planned study design examining inspiratory muscle training in heart failure with preserved ejection fraction.