Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders
In healthy persons, there is an excellent relation between the timing of the (two) surface electromyography (sEMG) thresholds and the (two) ventilatory thresholds during exercise. The primary aim of this study was to determine the relative timing of both sEMG and ventilatory thresholds in patients w...
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2022.821584/full |
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| author | Nicoline B. M. Voet Nicoline B. M. Voet Christiaan G. J. Saris Dick H. J. Thijssen Vincent Bastiaans David E. Sluijs Mariska M. H. P. Janssen Mariska M. H. P. Janssen |
| author_facet | Nicoline B. M. Voet Nicoline B. M. Voet Christiaan G. J. Saris Dick H. J. Thijssen Vincent Bastiaans David E. Sluijs Mariska M. H. P. Janssen Mariska M. H. P. Janssen |
| author_sort | Nicoline B. M. Voet |
| collection | DOAJ |
| description | In healthy persons, there is an excellent relation between the timing of the (two) surface electromyography (sEMG) thresholds and the (two) ventilatory thresholds during exercise. The primary aim of this study was to determine the relative timing of both sEMG and ventilatory thresholds in patients with neuromuscular disorders compared with healthy subjects during a maximal ergospirometry cycling test. We hypothesized that in patients with neuromuscular disorders, the sEMG thresholds would occur relatively earlier in time than the ventilatory thresholds, compared to healthy subjects, because performance fatigability occurs more rapidly. In total, 24 healthy controls and 32 patients with a neuromuscular disorder performed a cardiopulmonary exercise test on a bicycle using a 10-min ramp protocol, during which we collected ergospirometry data: power at both ventilatory and sEMG thresholds, and sEMG data of lower leg muscles. In line with our hypothesis, normalized values for all thresholds were lower for patients than healthy subjects. These differences were significant for the first ventilatory (p = 0.008) and sEMG threshold (p < 0.001) but not for the second sEMG (p = 0.053) and ventilatory threshold (p = 0.238). Most parameters for test–retest reliability of all thresholds did not show any fixed bias, except for the second ventilatory threshold. The feasibility of the sEMG thresholds was lower than the ventilatory thresholds, particularly of the first sEMG threshold. As expected, the sEMG thresholds, particularly the first threshold, occurred relatively earlier in time than the ventilatory thresholds in patients compared with healthy subjects. A possible explanation could be (a combination of) a difference in fiber type composition, disuse, and limited muscle-specific force in patients with neuromuscular disorders. sEMG measurements during submaximal dynamic exercises are needed to generalize the measurements to daily life activities for future use in prescribing and evaluating rehabilitation interventions. |
| first_indexed | 2024-12-12T23:54:36Z |
| format | Article |
| id | doaj.art-1c8a19f1497b40588a5ce058781aaccb |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-12T23:54:36Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Physiology |
| spelling | doaj.art-1c8a19f1497b40588a5ce058781aaccb2022-12-22T00:06:36ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2022-03-011310.3389/fphys.2022.821584821584Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular DisordersNicoline B. M. Voet0Nicoline B. M. Voet1Christiaan G. J. Saris2Dick H. J. Thijssen3Vincent Bastiaans4David E. Sluijs5Mariska M. H. P. Janssen6Mariska M. H. P. Janssen7Department of Rehabilitation, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, NetherlandsKlimmendaal, Rehabilitation Center, Arnhem, NetherlandsDepartment of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, NetherlandsDepartment of Physiology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, NetherlandsSports Medicine Center, HAN Seneca, HAN University of Applied Sciences, Nijmegen, NetherlandsSports Medicine Center, HAN Seneca, HAN University of Applied Sciences, Nijmegen, NetherlandsDepartment of Rehabilitation, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Nijmegen, NetherlandsKlimmendaal, Rehabilitation Center, Arnhem, NetherlandsIn healthy persons, there is an excellent relation between the timing of the (two) surface electromyography (sEMG) thresholds and the (two) ventilatory thresholds during exercise. The primary aim of this study was to determine the relative timing of both sEMG and ventilatory thresholds in patients with neuromuscular disorders compared with healthy subjects during a maximal ergospirometry cycling test. We hypothesized that in patients with neuromuscular disorders, the sEMG thresholds would occur relatively earlier in time than the ventilatory thresholds, compared to healthy subjects, because performance fatigability occurs more rapidly. In total, 24 healthy controls and 32 patients with a neuromuscular disorder performed a cardiopulmonary exercise test on a bicycle using a 10-min ramp protocol, during which we collected ergospirometry data: power at both ventilatory and sEMG thresholds, and sEMG data of lower leg muscles. In line with our hypothesis, normalized values for all thresholds were lower for patients than healthy subjects. These differences were significant for the first ventilatory (p = 0.008) and sEMG threshold (p < 0.001) but not for the second sEMG (p = 0.053) and ventilatory threshold (p = 0.238). Most parameters for test–retest reliability of all thresholds did not show any fixed bias, except for the second ventilatory threshold. The feasibility of the sEMG thresholds was lower than the ventilatory thresholds, particularly of the first sEMG threshold. As expected, the sEMG thresholds, particularly the first threshold, occurred relatively earlier in time than the ventilatory thresholds in patients compared with healthy subjects. A possible explanation could be (a combination of) a difference in fiber type composition, disuse, and limited muscle-specific force in patients with neuromuscular disorders. sEMG measurements during submaximal dynamic exercises are needed to generalize the measurements to daily life activities for future use in prescribing and evaluating rehabilitation interventions.https://www.frontiersin.org/articles/10.3389/fphys.2022.821584/fullmuscle fatigueneuromuscular disordersexerciseperformance fatigabilitycyclingsurface electromyography thresholds |
| spellingShingle | Nicoline B. M. Voet Nicoline B. M. Voet Christiaan G. J. Saris Dick H. J. Thijssen Vincent Bastiaans David E. Sluijs Mariska M. H. P. Janssen Mariska M. H. P. Janssen Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders Frontiers in Physiology muscle fatigue neuromuscular disorders exercise performance fatigability cycling surface electromyography thresholds |
| title | Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders |
| title_full | Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders |
| title_fullStr | Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders |
| title_full_unstemmed | Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders |
| title_short | Surface Electromyography Thresholds as a Measure for Performance Fatigability During Incremental Cycling in Patients With Neuromuscular Disorders |
| title_sort | surface electromyography thresholds as a measure for performance fatigability during incremental cycling in patients with neuromuscular disorders |
| topic | muscle fatigue neuromuscular disorders exercise performance fatigability cycling surface electromyography thresholds |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2022.821584/full |
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