Table 3.
Intervention description of the included studies
| Study | IMT group description | Comparison group | Score PEDro | |||||
|---|---|---|---|---|---|---|---|---|
| Intensity (MIP) | Frequency (day/week) | Duration (week) | Time | Intensity type | Training type | Description | ||
| Campos et al (2018)34 | 15 cmH2O 20 cmH2O | 3 | 8 | 30 mins | Low | Resistor Threshold PEP | Control | 6/10 |
| Rodrigues et al (2018)40 | 30% (1 week) 50% after | 2×day/5–7 days | 5 | 30 breaths | Moderate | Resistor PowerBreathe Classic | Control | 4/10 |
| DeLucia et al (2018)36 | 75% | 5 | 6 | – | High | Resistor Pressure Transducer | Sham (15%PImax) | 7/10 |
| Moreno et al (2017)39 | 30% | 6 | 8 | 30 mins | Low | Resistor Threshold IMT and Powerbreathe | Control | 5/10 |
| Feriani et al (2017)42 | 30% | 3 sets | 1 | 15 mins | Low | Resistor Threshold IMT | Control | 5/10 |
| Vranish et al (2016)41 | 75% | Twice/day | 6 | 30 breaths | High | Resistor PowerBreathe Classic | Sham (15% PImax) | 5/10 |
| Mills et al (2015)38 | 50% | 7 | 8 | 30 breaths | Low | Resistor PowerBreathe Classic | Control | 5/10 |
| Ferreira et al (2013)9 | 30% | 7 | 8 | 30 mins | Low | Resistor Threshold IMT | Control | 6/10 |
| Mello et al (2012)37 | 30% | 3×day during 7 week | 12 | 10 mins | Low | Resistor Threshold IMT | Control | 4/10 |
| Correa et al (2011)35 | 30% | 7 | 8 | 30 mins | Low | Resistor Threshold IMT | Control | 6/10 |
Abbreviations: PEP, positive expiratory pressure; IMT, inspiratory muscle training; MIP, maximal inspiratory pressure.