DDK Acoustic Analysis and Swallowing Indicators

ConditionsSwallowing Function Swallowing Risk Dysphagia

Trial statusNot yet recruiting

Trial phaseNot listed

Trial typeObservational

Biological sexAll

Age18+

SponsorKaohsiung Medical University

About this trial

This study examines whether simple speech tasks and a swallowing screening test can help identify swallowing risk in adults of different ages. Participants will complete basic questions, a swallowing self-assessment, a saliva swallowing test, and short voice recordings of rapid syllables. The study is non-invasive, takes about 75 minutes, and may help develop an easy, low-cost screening tool for early swallowing problems.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

1.Community-dwelling adults aged 18 years or older, with no upper age limit.

2.Ability to communicate in Mandarin or Taiwanese and understand the study procedures.

3.Willingness to provide written informed consent.

4 .Ability to complete the DDK tasks and RSST.

Disqualifiers

1.Presence of acute respiratory infection, upper respiratory inflammation, or other acute conditions that may significantly affect speech or swallowing.

2.Impaired consciousness, significant cognitive deficits, or inability to understand the study procedures.

3.Recent surgery or radiotherapy involving the oral cavity or pharynx that affects speech or swallowing.

4.Severe hearing impairment that prevents understanding of instructions.

Trial population

The study population consists of community-dwelling adults aged 18 years and older, with no upper age limit, who are able to communicate in Mandarin or Taiwanese, provide informed consent, and complete DDK tasks, RSST, and EAT-10 assessment. Participants will be recruited from community organizations and related settings in the Kaohsiung-Pingtung region. The study uses a single-visit observational design with age-based subgroup analyses and no intervention.

Trial design

Design model

Cohort

Time perspective

Cross-sectional

Treatments tested in this trial

Not listed

Trial groups

720 Participants

are grouped into 1 trial group

Group A: Age-Based Cohort

Trial outcomes

Primary outcomes

Repetitive Saliva Swallowing Test Classification

Classification of swallowing function based on the Repetitive Saliva Swallowing Test (RSST). Participants will be classified as having normal RSST performance if they complete greater than or equal to 3 swallows in 30 seconds, and abnormal RSST performance if they complete fewer than 3 swallows in 30 seconds.

Time frame

Day 1

Secondary outcomes

Eating Assessment Tool-10 Total Score

Total score on the Eating Assessment Tool-10 (EAT-10), a 10-item self-report questionnaire used to assess swallowing-related symptoms. The total score ranges from 0 to 40, where higher scores indicate worse swallowing-related symptoms. A score of 3 or higher suggests possible swallowing difficulty.

Time frame

Day 1

Diadochokinetic Speech Rate

Rate of repeated diadochokinetic speech productions of /pa/, /ta/, and /ka/. The rate will be reported as syllables per second.

Time frame

Day 1

Diadochokinetic Speech Fundamental Frequency

Fundamental frequency (F0) extracted from repeated diadochokinetic (DDK) speech recordings of /pa/, /ta/, and /ka/. Fundamental frequency will be reported in Hertz (Hz).

Time frame

Day 1

Diadochokinetic Speech First Formant Frequency

First formant frequency (F1) extracted from repeated diadochokinetic (DDK) speech recordings of /pa/, /ta/, and /ka/. F1 reflects the first resonance frequency of the vocal tract and will be reported in Hertz (Hz).

Time frame

Day 1

Other outcomes

Participant Age

Age of participants collected at baseline, reported in years.

Time frame

Day 1

Participant Sex

Sex of participants collected on Day 1, reported as male or female according to the study case report form.

Time frame

Day 1

Education Level

Highest level of education completed by participants collected at baseline, categorized as primary school or below, junior high school, senior high school, or college or above.

Time frame

Day 1

Body Mass Index

Body mass index (BMI) calculated from measured height and weight at baseline. Height will be measured in meters and weight in kilograms; BMI will be reported in kg/m².

Time frame

Day 1

Locations

Map coordinates are unavailable for these locations. Locations are shown below instead.

Department of Sports Medicine, Kaohsiung Medical University, Taiwan Status unavailable 807, Kaohsiung City, Taiwan Taiwan

Taiwan

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Kaohsiung Medical University

Lead sponsor

Source ClinicalTrials.gov

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