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Effect of Different Resistance Respiratory Muscle Training on Swallowing Muscle Activity in Patients With Poststroke Dysphagia.

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Title: Effect of Different Resistance Respiratory Muscle Training on Swallowing Muscle Activity in Patients With Poststroke Dysphagia.
Authors: Su, Pan-pan1, Li, Shu-han2, Yang, Jiao2, He, Chuan1 he-chuan@outlook.com, Meng, Dian-huai2 dhdream@njmu.edu.cn
Source: American Journal of Speech-Language Pathology. Jul2026, Vol. 35 Issue 4, p1730-1743. 14p.
Subject Terms: *Exercise physiology, Respiratory muscle physiology, Cross-sectional method, Repeated measures design, Disease duration, Research funding, Neck muscles, Clinical trials, Hospitals, Descriptive statistics, Resistance training, Electromyography, Stroke rehabilitation, Analysis of variance, Friedman test (Statistics), Stroke, Deglutition, Stroke patients, Deglutition disorders, Disease complications
Geographic Terms: China
Abstract: Objective: This study aimed to investigate the activation characteristics of submental muscle (SM) and infrahyoid muscle (IM) in response to expiratory and inspiratory muscle training (EMT/IMT) at varying resistance loads in patients with poststroke dysphagia. Method: Twenty participants with poststroke dysphagia underwent surface electromyography during 5-ml water swallowing and graded EMT/IMT tasks. Key parameters including amplitude, duration, and root mean square (RMS) were analyzed. Statistical analysis was performed using repeated-measures analysis of variance or the Friedman test, with post hoc Bonferroni correction for multiple comparisons. Results: The peak amplitude of SM at 75% and 100% maximum expiratory pressure (MEP) was significantly higher than at lower MEP intensities (e.g., vs. 25% MEP, p = .002 and p < .001; vs. 50% MEP, p = .012 and p = .003) and all IMT intensities (all ps < .05). IM amplitude increased significantly at 80%--100% maximum inspiratory pressure (MIP), exceeding both the swallowing task and all EMT tasks (all ps < .05). Except for the affected-side IM during the 80% and 100% MIP tasks, the activity duration of both SM and IM was significantly longer during the 100% MEP task compared to other MEP intensities and all IMT tasks (all ps < .05). RMS values for both muscle groups were elevated at higher respiratory muscle training (RMT) levels. No consistent side-to-side differences were found in most parameters. Borg Dyspnea Scale scores increased progressively with training intensity, with significant differences between high-intensity tasks (e.g., 100% MEP vs. 25% MEP, p < .001; 100% MEP vs. 50% MEP, p = .002; 100% MIP vs. 30% MIP, p < .001). Conclusions: EMT preferentially activates the SM group in a load-dependent manner, while IMT selectively recruits IM. These findings support the use of targeted, intensity-specific RMT for enhancing swallowing-related muscle activation in rehabilitation. [ABSTRACT FROM AUTHOR]
Copyright of American Journal of Speech-Language Pathology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of Different Resistance Respiratory Muscle Training on Swallowing Muscle Activity in Patients With Poststroke Dysphagia.
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– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22China%22&quot;&gt;China&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Objective: This study aimed to investigate the activation characteristics of submental muscle (SM) and infrahyoid muscle (IM) in response to expiratory and inspiratory muscle training (EMT/IMT) at varying resistance loads in patients with poststroke dysphagia. Method: Twenty participants with poststroke dysphagia underwent surface electromyography during 5-ml water swallowing and graded EMT/IMT tasks. Key parameters including amplitude, duration, and root mean square (RMS) were analyzed. Statistical analysis was performed using repeated-measures analysis of variance or the Friedman test, with post hoc Bonferroni correction for multiple comparisons. Results: The peak amplitude of SM at 75% and 100% maximum expiratory pressure (MEP) was significantly higher than at lower MEP intensities (e.g., vs. 25% MEP, p = .002 and p &lt; .001; vs. 50% MEP, p = .012 and p = .003) and all IMT intensities (all ps &lt; .05). IM amplitude increased significantly at 80%--100% maximum inspiratory pressure (MIP), exceeding both the swallowing task and all EMT tasks (all ps &lt; .05). Except for the affected-side IM during the 80% and 100% MIP tasks, the activity duration of both SM and IM was significantly longer during the 100% MEP task compared to other MEP intensities and all IMT tasks (all ps &lt; .05). RMS values for both muscle groups were elevated at higher respiratory muscle training (RMT) levels. No consistent side-to-side differences were found in most parameters. Borg Dyspnea Scale scores increased progressively with training intensity, with significant differences between high-intensity tasks (e.g., 100% MEP vs. 25% MEP, p &lt; .001; 100% MEP vs. 50% MEP, p = .002; 100% MIP vs. 30% MIP, p &lt; .001). Conclusions: EMT preferentially activates the SM group in a load-dependent manner, while IMT selectively recruits IM. These findings support the use of targeted, intensity-specific RMT for enhancing swallowing-related muscle activation in rehabilitation. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of American Journal of Speech-Language Pathology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=ehh&AN=195279698
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1044/2026_AJSLP-25-00447
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1730
    Subjects:
      – SubjectFull: Exercise physiology
        Type: general
      – SubjectFull: Respiratory muscle physiology
        Type: general
      – SubjectFull: Cross-sectional method
        Type: general
      – SubjectFull: Repeated measures design
        Type: general
      – SubjectFull: Disease duration
        Type: general
      – SubjectFull: Research funding
        Type: general
      – SubjectFull: Neck muscles
        Type: general
      – SubjectFull: Clinical trials
        Type: general
      – SubjectFull: Hospitals
        Type: general
      – SubjectFull: Descriptive statistics
        Type: general
      – SubjectFull: Resistance training
        Type: general
      – SubjectFull: Electromyography
        Type: general
      – SubjectFull: Stroke rehabilitation
        Type: general
      – SubjectFull: Analysis of variance
        Type: general
      – SubjectFull: Friedman test (Statistics)
        Type: general
      – SubjectFull: Stroke
        Type: general
      – SubjectFull: Deglutition
        Type: general
      – SubjectFull: Stroke patients
        Type: general
      – SubjectFull: Deglutition disorders
        Type: general
      – SubjectFull: Disease complications
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Effect of Different Resistance Respiratory Muscle Training on Swallowing Muscle Activity in Patients With Poststroke Dysphagia.
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            NameFull: Su, Pan-pan
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            NameFull: Yang, Jiao
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            NameFull: He, Chuan
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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            – TitleFull: American Journal of Speech-Language Pathology
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