Pulmonary rehabilitation (PR) using minimal or specialist equipment:effects on quadriceps strength

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Background: PR using minimal equipment (PR-min) may expand the number of settings that can deliver PR. Previous data suggest that PR-min produced benefits in exercise capacity and health status that are non-inferior to PR delivered using specialist gym equipment (PR-gym). However little data exist for resistance training outcomes. Hypothesis: PR-min is non-inferior to PR-gym in improving bilateral knee extension one repetition maximum (1RM). Methods: Participants: Individuals with COPD referred for PR. Intervention:PR comprising 2 supervised sessions per week for 8 weeks using PR-min; n=390. Control:PR-gym. Propensity score matched 1:1 (n=390). Outcomes:1RM, exercise capacity (incremental shuttle walk: ISW) and health status (COPD Assessment Test:CAT). Analysis: Non-inferiority analysis with pre-defined non-inferiority limit for 1RM of 2.5kg. Results: Significant improvements in 1RM, ISW and CAT was seen in both groups, with no differences in Δ1RM between PR-min and PR-gym (Table 1). However non-inferiority was inconclusive (Fig 1) erj;66/suppl_69/PA2660/TB1 T1 TB1 Table 1: Response to PR and between group differences PR-gym PR-min Mean(95% CI between group difference) Δ1RM, kg 11.8(10.3 to 13.2) 10.4(8.9 to 11.9) -1.3(-3.4 to 0.7) ΔISW, m 53(44 to 62) 57(48 to 66) 4(-9 to 16) ΔCAT -3.1(-3.5 to -2.3) -3.2(-4.0 to 2.5) -0.2(-1.2 to 1.0) erj;66/suppl_69/PA2660/F1 F1 F1 Conclusion: PR-min produces similar improvements in knee extension 1RM as PR-gym although non-inferiority was inconclusive.

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