Minimal important difference of two methods for assessment of quadriceps femoris strength post exercise program in individuals with COPD

The assessment of quadriceps femoris (QF) strength is recommended by international guidelines as an outcome of exercise training (ET) programs in patients with chronic obstructive pulmonary disease (COPD). To identify the minimal important difference (MID) of two methods for the assessment of improv...

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Bibliographic Details
Published in:Heart & lung 2022-07, Vol.54, p.56-60
Main Authors: Santin, Laís, Fonseca, Jéssica, Hirata, Raquel P., Hernandes, Nidia A., Pitta, Fabio
Format: Article
Language:English
Subjects:
Chronic obstructive pulmonary disease
Exercise
Exercise Therapy
Humans
Lower limb
Muscle Strength
Pulmonary Disease, Chronic Obstructive
Quadriceps Muscle
Walk Test
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Summary:The assessment of quadriceps femoris (QF) strength is recommended by international guidelines as an outcome of exercise training (ET) programs in patients with chronic obstructive pulmonary disease (COPD). To identify the minimal important difference (MID) of two methods for the assessment of improvement of QF strength after a high-intensity ET program in individuals with COPD: 1-repetition maximum (1RM) and maximal voluntary contraction (MVC). Individuals with moderate to very-severe stable COPD were submitted to high-intensity ET (3 days/week, 36 sessions). Lung function (spirometry), exercise capacity (6-minute walk test [6MWT]) and QF strength (1RM test and MVC by using a strain-gauge) were assessed before and after the ET program. Twenty-one individuals were studied (65±8 years, BMI 27±6; FEV1 51±16%predicted). At the end of the ET program, QF strength improved significantly (10±4 Nm for MVC and 8 ± 6 kg for 1RM) (P
ISSN:0147-9563
1527-3288
DOI:10.1016/j.hrtlng.2022.03.008