Table 4.

IMT in the glycemic index, autonomic function, and functional capacity.

Study	PEDro score	Diaphragmatic muscle strength	Glycemic index	Autonomic function	Functional capacity
Ahmad, 2020	4	Not mentioned	There was no statistical difference	Not assessed	Not assessed
Albarrati, 2020	7	Increased MIP	Not assessed	Not assessed	Increase in 6WT covered distance, TUG time, and palm grip strength
Correa, 2011	6	Increased MIP	Not assessed	There was no statistical difference	There were no significant results
Kaminski, 2015	4	Increased MIP	Not assessed	Reduction of the sympathetic component (LFn)	There were no significant results
Mowad, 2020	5	Increased MIP	Not assessed	Not assessed	Increased VO₂max
Pinto, 2021	9	Increased endurance	Reduced glycemic levels after 8 weeks of IMT at 30% MIP, with no difference after 12 weeks, neither in HbA1c	Not assessed	Not assessed

6WT=six-minute walk test; HbA1c=glycated hemoglobin; IMT=inspiratory muscle training; LFn=normalized low frequency; MIP=maximum inspiratory pressure; PEDro=Physiotherapy Evidence Database; TUG=Timed Up and Go; VO₂max=maximal oxygen consumption