Inter-day test–retest reliability and feasibility of isokinetic, isometric, and isotonic measurements to assess quadriceps endurance in people with chronic obstructive pulmonary disease: A multicenter study

Frykholm, Erik; Géphine, Sarah; Saey, Didier; Hees, Hieronymus W. H. van; Lemson, Arthur; Klijn, Peter; Maltais, François; Nyberg, André

doi:10.1177/1479973118816497

Cited by 24 publications

(26 citation statements)

References 27 publications

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“…Participants performed three maximal unilateral isometric knee extensions for five seconds at a knee angle of 60˚, interspersed with 15 seconds of rest. The maximal voluntary contraction was defined as the highest peak torque (Nm) [33] and was both expressed as absolute value as well as related to predicted normal values [34].…”

Section: Measurementsmentioning

confidence: 99%

Correlates of variability in endurance shuttle walk test time in patients with chronic obstructive pulmonary disease

Stoffels

Borst²,

Peters³

et al. 2021

PLoS ONE

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Background The endurance shuttle walk test (ESWT) is used to evaluate exercise tolerance in patients with chronic obstructive pulmonary disease (COPD). The recommended pre-intervention tolerated duration (Tlim) is between 3–8 minutes for optimal interpretation of treatment effects. However, this window may be exceeded and factors determining ESWT Tlim are not completely understood. Therefore, we aimed to determine whether pulmonary function, physical and incremental shuttle walk test (ISWT) performance measures are associated with ESWT Tlim in COPD patients. Methods Assessment data from patients eligible for pulmonary rehabilitation was retrospectively analyzed. Inclusion criteria were: diagnosis of COPD and complete data availability regarding ESWT and ISWT. Patients performed an ESWT at 85% of ISWT speed and were divided into three groups (ESWT Tlim: <3 minutes, 3–8 minutes, >8 minutes). Subject characteristics, severity of complaints, pulmonary function, physical capacity and activity, exercise tolerance and quadriceps muscle strength were evaluated. Results 245 COPD patients (FEV1 38 (29–52)% predicted) were included. Median ESWT Tlim was 6.0 (3.7–10.3) minutes, 41 (17%) patients walked <3 minutes and 80 (33%) patients walked >8 minutes. Body mass index, maximal oxygen consumption, Tlim on constant work rate cycle test, physical activity level, maximal ISWT speed, dyspnoea Borg score at rest and increase of leg fatigue Borg score during ISWT independently predicted Tlim in multivariate regression analysis (R2 = 0.297, p<0.001). Conclusion This study reported a large variability in ESWT Tlim in COPD patients. Secondly, these results demonstrated that next to maximal ISWT speed, other ISWT performance measures as well as clinical measures of pulmonary function, physical capacity and physical activity were independent determinants of ESWT Tlim. Nevertheless, as these determinants only explained ~30% of the variability, future studies are needed to establish whether additional factors can be used to better adjust individual ESWT pace in order to reduce ESWT Tlim variability.

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Section: Measurementsmentioning

confidence: 99%

Correlates of variability in endurance shuttle walk test time in patients with chronic obstructive pulmonary disease

Stoffels

Borst²,

Peters³

et al. 2021

PLoS ONE

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“…Furthermore, the availability of measurement equipment will likely vary between clinical settings and contexts, thus impacting the choice of the assessment strategy. The physiotherapist needs to acknowledge that measurement equipment and assessment strategies are not interchangeable and may provide different information even if the goal of the assessment would be the same [55,57].…”

Section: How To Assess Limb Muscles In Clinical Practicementioning

confidence: 99%

“…Targeting Limb Muscle Dysfunction in COPD http://dx.doi.org/10.5772/intechopen.90815 interventions to interpret findings [57][58][59][60][61], while validity, for example, could be an issue when using simple field tests to provide information on aspects of limb muscle function [62][63][64][65].…”

Section: How To Assess Limb Muscles In Clinical Practicementioning

confidence: 99%

“…Assessment of limb muscle endurance could in a similar way as limb muscle strength measurements were performed using both volitional and non-volitional techniques, with the former being the most clinically feasible. In COPD, direct measures of limb muscle endurance have primarily targeted the quadriceps muscle using sustained (isometric) or repeated (isokinetic/isotonic) contractions [19], providing reliable results [57].…”

Section: Muscle Endurance and Fatiguementioning

confidence: 99%

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Targeting Limb Muscle Dysfunction in COPD

Nyberg¹,

Frykholm²

2020

Physical Therapy Effectiveness

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Chronic obstructive pulmonary disease (COPD), is today one of the world's most common chronic diseases, estimated by the World Health Organization to be the third leading cause of death worldwide by the year 2030. An often neglected aspect of COPD is that the course of the disease is linked to extrapulmonary manifestations that are currently not dealt with optimally, but that has a direct and substantial impact on the condition. Limb muscle dysfunction, at the functional level defined as the reduction of either strength or endurance (or both) properties of the muscle, is highly prevalent in COPD, closely linked to critical clinical and prognostic outcomes including functional status, quality of life, and even mortality. If the goal is to improve limb muscle function among people with COPD is exercise training recommended before other treatment modalities, highly prioritized in international guidelines. In this chapter, why and how to assess and manage limb muscle dysfunction among people with COPD will be targeted, highlighting the vital role of physical therapy and the physiotherapist.

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“…Performance fatigability has been described as "… the magnitude or rate of change in a performance criterion relative to a reference value over a given time of task performance or measure of mechanical output," [22], p.411. Recent investigations [16,27] have examined the inter-day consistency of performance fatigability (i.e., percent decline in peak torque) resulting from various isokinetic fatiguing tasks. For example, Frykholm et al [16] reported low day-to-day consistency in performance fatigability and demonstrated that following 30 unilateral, maximal, concentric, isokinetic (90°/s) leg extension muscle actions there were 39.8% and 41.9% decreases in peak torque on Day 1 and Day 2, respectively.…”

Section: Introductionmentioning

confidence: 99%

Day to Day Consistency and Inter-subject Variability of Neuromuscular Responses and Performance Fatigability as the Result of Maximal, Bilateral, Dynamic Leg Extensions

Keller

Housh

Anders

et al. 2020

J. of SCI. IN SPORT AND EXERCISE

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Purpose The purpose of the present study was to examine the day-to-day consistency and inter-subject variability of composite and individual, neuromuscular and torque patterns of responses as a result of a fatiguing bout of maximal, bilateral, isokinetic leg extension muscle actions. Methods Ten men (Mean ± SD = 21.6 ± 2.5 years) completed two testing visits consisting of pretest and posttest maximal voluntary isometric contractions (MVIC) as well as 25 maximal, bilateral, isokinetic (180°/s), leg extension muscle actions. Electromyographic (EMG) and mechanomyographic (MMG) signals were collected from the vastus lateralis and normalized to the MVIC. Performance fatigability was defined as the percent decline in torque between the average of repetitions 1, 2, and 3 and repetitions 23, 24, and 25. Polynomial regression was used to examine the individual and composite relationships between EMG amplitude (AMP), EMG mean power frequency (MPF), MMG AMP, MMG MPF, and torque versus repetitions. Results There was no significant difference (d = 0.80; P = 0.17) in the performance fatigability between Day 1 (19.3% ± 7.1%) and Day 2 (26.9% ± 11.3%). Polynomial regression indicated substantial inter-subject variability, but high day-to-day consistency. ConclusionThe composite EMG AMP, MMG AMP, and MMG MPF patterns of responses demonstrated consistency across days. The composite EMG MPF patterns of responses, however, were not consistent between Day 1 and Day 2. In addition, based on the high inter-subject variability, future studies should present both composite patterns of neuromuscular responses and the patterns of responses on a subject-by-subject basis to make inferences regarding fatigue-induced changes in motor unit activation strategies.

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Inter-day test–retest reliability and feasibility of isokinetic, isometric, and isotonic measurements to assess quadriceps endurance in people with chronic obstructive pulmonary disease: A multicenter study

Cited by 24 publications

References 27 publications

Correlates of variability in endurance shuttle walk test time in patients with chronic obstructive pulmonary disease

Correlates of variability in endurance shuttle walk test time in patients with chronic obstructive pulmonary disease

Targeting Limb Muscle Dysfunction in COPD

Day to Day Consistency and Inter-subject Variability of Neuromuscular Responses and Performance Fatigability as the Result of Maximal, Bilateral, Dynamic Leg Extensions

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