Lingual Endurance Exercise in Treating Post-Stroke Dysphagia
NCT ID: NCT05523973
Last Updated: 2025-05-07
Study Results
Results available
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View full resultsBasic Information
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Recruitment Status
COMPLETED
Clinical Phase
NA
Total Enrollment
19 participants
Study Classification
INTERVENTIONAL
Study Start Date
2022-08-02
Study Completion Date
2023-11-28
Brief Summary
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Aim 1: Determine feasibility of lingual endurance training for individuals with persistent dysphagia after ischemic stroke. Primary outcome measures: % patient adherence (# of attempted repetitions/# prescribed repetitions) and % dose delivery (# of repetitions meeting goal/# prescribed repetitions). Aim 2: Determine preliminary efficacy of lingual endurance training on improving critical aspects of oropharyngeal swallowing (physiologic impairments, clearance of oropharyngeal residue, airway protection), functional oral intake, and patient reported swallowing quality of life in individuals with persistent dysphagia after ischemic stroke. Primary outcome measures: improvement on videofluoroscopic assessment of swallowing function using the gold standard Modified Barium Swallowing Impairment Profile (MBSImP) Overall Impression (OI) score and Functional Oral Intake Scale (FOIS) score. Secondary outcome measures: Analysis of Swallow Physiology, Events, Timing and Kinematics (ASPEKT); airway invasion - Penetration Aspiration Scale (PAS). Patient reported outcome measures: EAT-10 (Eating Assessment Tool) and the Swallowing Quality of Life Questionnaire (SWAL-QoL).
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Detailed Description
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Implications of Post-Stroke Dysphagia Dysphagia (swallowing impairment) after stroke is common, estimated to affect 78% of patients.1 Dysphagia results in additional negative consequences that complicate patient recovery and increase the risk of developing pulmonary complications (aspiration pneumonia) and may result in suboptimal nutrition. These comorbidities increase cost of care, up to $6,243 on average per patient, placing a burden not only on the individual, but also the healthcare system at large. The effects of dysphagia post-stroke extend beyond physical health concerns and increase the risk of depression, with devastating impacts on quality of life. Given these undesirable and dangerous health consequences, adequate assessment and treatment of swallowing impairments after stroke is a critical component of rehabilitation for this patient population.
Limitations to Current Treatment Approaches Current treatment approaches to alleviate dysphagia after stroke, especially in acute and sub-acute phases, have primarily focused on diet modification, compensatory posturing, and providing alternate access to hydration and nutrition. While the goal of these strategies is to improve swallow safety and avoid negative consequences of airway invasion, these techniques can be burdensome to the patient if implemented long-term. Additionally, these approaches do not target rehabilitation of swallowing function, but rather provide a somewhat temporary solution to what is, for many patients, a life-long issue. Available rehabilitative approaches to target improvements in function of oropharyngeal musculature during swallowing include both swallowing exercises (task-specific) and non-swallowing exercises (e.g. tongue exercise), which rely on the principles of transference to improve swallowing function. However, evidence is inconsistent regarding efficacy of these "exercise-based" interventions that target the oropharyngeal musculature, and the scientific validity of these trials varies greatly. Of these non-swallowing exercise approaches, lingual (tongue) exercise has been frequently studied and can be facilitated by medical devices which provide bio-feedback of lingual pressure generative capabilities to the patient and clinician. However, there is little to no evidence that lingual strengthening improves swallow physiology or functional outcomes in post-stroke dysphagia, and a majority of these previous studies lack use of standardized outcomes or randomized controlled trial procedures. Also, lingual strengthening may not induce biological changes to tongue muscle fiber size, as would be expected with a resistance-based exercise program. Despite these mixed findings, lingual strengthening is still routinely to treat post-stroke dysphagia. A major limitation of these current approaches is a sole focus on increasing muscular strength alone without consideration for other aspects of muscle physiology necessary for swallowing, such as endurance.
Lingual Endurance Training as an Alternative Approach In this preliminary study, we have proposed to examine the effects of lingual endurance training in individuals with dysphagia after stroke, as an alternative approach to traditional progressive lingual strength training, because this patient group is known to have specific deficits in lingual function after stroke. Both oral and pharyngeal tongue movements are essential for safe and efficient swallowing. Thus, exercise of the lingual musculature is a reasonable goal. However, swallowing is an endurance task; lingual pressures required for swallowing are submaximal, requiring repeated and sustained contraction over the course of a meal. Thus, targeting improvement in lingual endurance over strength alone may provide greater transferrable benefit to daily swallowing tasks. However, there are currently no randomized controlled trials investigating efficacy of lingual endurance training as a treatment for dysphagia in any patient population. As such, this proposed preliminary trial is essential to gathering the necessary pilot evidence regarding whether lingual endurance training is feasible and effective as an alternative approach to dysphagia rehabilitation for individuals with swallowing impairments after stroke. The long-term goal of this proposed work is to develop improved, evidence-based protocols for lingual exercise training for individuals with dysphagia after stroke. Ultimately, the results of this proposed pilot will be highly significant in creating movement towards more specific and evidence-based approaches for this unique patient group, who currently have very few rehabilitative options available. In this initial trial, we will assess if lingual endurance training will be feasible (Aim 1) and effective (Aim 2) for improving swallowing function in post-stroke dysphagia.
Limitations to Current Treatment Approaches Current treatment approaches to alleviate dysphagia after stroke, especially in acute and sub-acute phases, have primarily focused on diet modification, compensatory posturing, and providing alternate access to hydration and nutrition. While the goal of these strategies is to improve swallow safety and avoid negative consequences of airway invasion, these techniques can be burdensome to the patient if implemented long-term. Additionally, these approaches do not target rehabilitation of swallowing function, but rather provide a somewhat temporary solution to what is, for many patients, a life-long issue. Available rehabilitative approaches to target improvements in function of oropharyngeal musculature during swallowing include both swallowing exercises (task-specific) and non-swallowing exercises (e.g. tongue exercise), which rely on the principles of transference to improve swallowing function. However, evidence is inconsistent regarding efficacy of these "exercise-based" interventions that target the oropharyngeal musculature, and the scientific validity of these trials varies greatly. Of these non-swallowing exercise approaches, lingual (tongue) exercise has been frequently studied and can be facilitated by medical devices which provide bio-feedback of lingual pressure generative capabilities to the patient and clinician. However, there is little to no evidence that lingual strengthening improves swallow physiology or functional outcomes in post-stroke dysphagia, and a majority of these previous studies lack use of standardized outcomes or randomized controlled trial procedures. Also, lingual strengthening may not induce biological changes to tongue muscle fiber size, as would be expected with a resistance-based exercise program. Despite these mixed findings, lingual strengthening is still routinely to treat post-stroke dysphagia. A major limitation of these current approaches is a sole focus on increasing muscular strength alone without consideration for other aspects of muscle physiology necessary for swallowing, such as endurance.
Lingual Endurance Training as an Alternative Approach In this preliminary study, we have proposed to examine the effects of lingual endurance training in individuals with dysphagia after stroke, as an alternative approach to traditional progressive lingual strength training, because this patient group is known to have specific deficits in lingual function after stroke. Both oral and pharyngeal tongue movements are essential for safe and efficient swallowing. Thus, exercise of the lingual musculature is a reasonable goal. However, swallowing is an endurance task; lingual pressures required for swallowing are submaximal, requiring repeated and sustained contraction over the course of a meal. Thus, targeting improvement in lingual endurance over strength alone may provide greater transferrable benefit to daily swallowing tasks. However, there are currently no randomized controlled trials investigating efficacy of lingual endurance training as a treatment for dysphagia in any patient population. As such, this proposed preliminary trial is essential to gathering the necessary pilot evidence regarding whether lingual endurance training is feasible and effective as an alternative approach to dysphagia rehabilitation for individuals with swallowing impairments after stroke. The long-term goal of this proposed work is to develop improved, evidence-based protocols for lingual exercise training for individuals with dysphagia after stroke. Ultimately, the results of this proposed pilot will be highly significant in creating movement towards more specific and evidence-based approaches for this unique patient group, who currently have very few rehabilitative options available. In this initial trial, we will assess if lingual endurance training will be feasible (Aim 1) and effective (Aim 2) for improving swallowing function in post-stroke dysphagia.
Conditions
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Dysphagia, Oral Phase
Stroke, Ischemic
Study Design
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Allocation Method
NA
Intervention Model
SINGLE_GROUP
Some participants will practice only lingual endurance exercise 3 times a day, others will have a effortful swallow exercise to practice in place of their third session.
Primary Study Purpose
TREATMENT
Blinding Strategy
NONE
Study Groups
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Lingual Endurance Training
Participants will complete lingual endurance training 2-3 times a day. Half of the participants will also complete a session of effortful swallows with the device.
Group Type
EXPERIMENTAL
Lingual Endurance Training
Intervention Type
OTHER
Participants will participate in 3 training sessions per day for 8 weeks. Some participants will complete 3 sessions of lingual endurance exercise. For example, if the participant completed 100 repetitions during the baseline measurement, they would complete 75 repetitions during their exercise session. Other participants will complete effortful swallows during their 3rd training session. These participants will complete 30 swallows where they are instructed to press their tongue hard on the bulb and swallow their saliva.
Interventions
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Lingual Endurance Training
Participants will participate in 3 training sessions per day for 8 weeks. Some participants will complete 3 sessions of lingual endurance exercise. For example, if the participant completed 100 repetitions during the baseline measurement, they would complete 75 repetitions during their exercise session. Other participants will complete effortful swallows during their 3rd training session. These participants will complete 30 swallows where they are instructed to press their tongue hard on the bulb and swallow their saliva.
Intervention Type
OTHER
Eligibility Criteria
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Inclusion Criteria
* ≥3 months since initial diagnosis ischemic, non-hemorrhagic stroke occurring in areas involving anterior or posterior circulation and affecting underlying cortical or subcortical structures (including brainstem)
* are safe to tolerate some oral intake required for assessment of swallowing function via Modified Barium Swallow Study
* able to follow 2-step commands
* are safe to tolerate some oral intake required for assessment of swallowing function via Modified Barium Swallow Study
* able to follow 2-step commands
Exclusion Criteria
* a history of dysphagia prior to or after the stroke caused by any of the following conditions: gastrointestinal disease, traumatic brain injury, head and neck cancer, or a surgical procedure involving the pharynx or larynx
* a history of other neurological disease including traumatic brain injury, multiple sclerosis, Amyotrophic lateral sclerosis (ALS), Parkinson, or dementia
* Pregnant women
* Patients with a history of Temporomandibular joint dysfunction (TMJ) or Epilepsy
* a history of other neurological disease including traumatic brain injury, multiple sclerosis, Amyotrophic lateral sclerosis (ALS), Parkinson, or dementia
* Pregnant women
* Patients with a history of Temporomandibular joint dysfunction (TMJ) or Epilepsy
Minimum Eligible Age
21 Years
Eligible Sex
ALL
Accepts Healthy Volunteers
No
Sponsors
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Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Sponsor Role
collaborator
University of Cincinnati
OTHER
Sponsor Role
lead
Responsible Party
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Brittany Krekeler
Assistant Professor
Responsibility Role
PRINCIPAL_INVESTIGATOR
Principal Investigators
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Brittany Krekeler, PhD
Role: PRINCIPAL_INVESTIGATOR
University of Cincinnati, Department of Otolaryngology-Head and Neck Surgery
Locations
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Medical Sciences Building
Cincinnati, Ohio, United States
Site Status
Countries
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United States
References
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Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Other Identifiers
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2022-0218
Identifier Type: -
Identifier Source: org_study_id
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Computer-based Training on Cognitive Dysphagia in Stroke Survivors
NCT06328816
NOT_YET_RECRUITING
NA
Community-based Group Rehabilitation Program for Stroke Patients With Dysphagia
NCT06370390
NOT_YET_RECRUITING
NA
Enhancing Post-Stroke Dysphagia Rehabilitation
NCT06887855
RECRUITING
NA
Myofunctional and Respiratory Intervention on Phonation in Stroke
NCT06322368
RECRUITING
NA
Your Mind Can Exercise Too: Swallowing Motor Imagery Practice
NCT06526910
NOT_YET_RECRUITING
NA
Laryngeal Adaptation for Speech and Swallowing
NCT03770377
WITHDRAWN
NA
Dysphagia After Different Swallowing Therapies
NCT03048916
COMPLETED
NA