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Not yet recruiting NCT07626749

DDK Acoustic Analysis and Swallowing Indicators

— Observational Swallowing Function Swallowing Risk Dysphagia

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
This is an observational study: the protocol does not assign a study treatment.
Who it may be relevant to
Registry conditions: Swallowing Function, Swallowing Risk, Dysphagia. Basic parameters: from 18 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Taiwan
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Acoustic Analysis of Performance in Diadochokinetic (DDK) Tasks and Swallowing Function Indicators Among Adults Across Different Age Groups

Overview

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.

Detailed description

This is a cross-sectional observational study examining the relationship between diadochokinetic (DDK) speech performance and swallowing function in community-dwelling adults aged 18 years and older. Participants will complete a single study visit, during which demographic and health-related information will be collected, the EAT-10 swallowing self-assessment will be administered, the Repetitive Saliva Swallowing Test (RSST) will be performed, and short DDK speech recordings of /pa/, /ta/, and /ka/ will be obtained in a quiet setting. Acoustic features will be extracted from the recordings and analyzed together with RSST and EAT-10 results to explore age-related differences and to develop a predictive screening model for swallowing risk. All data will be de-identified, securely stored, and retained according to study requirements.

Primary outcome measures

  • Repetitive Saliva Swallowing Test Classification [Time frame: Day 1]
Secondary outcome measures (10)
  • Eating Assessment Tool-10 Total Score [Time frame: Day 1]
  • Diadochokinetic Speech Rate [Time frame: Day 1]
  • Diadochokinetic Speech Fundamental Frequency [Time frame: Day 1]
  • Diadochokinetic Speech First Formant Frequency [Time frame: Day 1]
  • Diadochokinetic Speech Second Formant Frequency [Time frame: Day 1]
  • Diadochokinetic Speech Jitter [Time frame: Day 1]
  • Diadochokinetic Speech Shimmer [Time frame: Day 1]
  • Diadochokinetic Speech Harmonics-to-Noise Ratio [Time frame: Day 1]
  • Diadochokinetic Speech Root Mean Square Amplitude [Time frame: Day 1]
  • Diadochokinetic Speech Zero-Crossing Rate [Time frame: Day 1]

Eligibility criteria

Inclusion criteria

  • 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.

Exclusion criteria

  • 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.
  • 5.Any other condition deemed unsuitable for participation by the investigators.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Observational model
Cohort

Study locations

Taiwan · 1 center
  • Department of Sports Medicine, Kaohsiung Medical University, Taiwan — Kaohsiung City

Identifiers

NCT: NCT07626749 · KMUHIRB-F(II)-20260160 · KMUHIRB-F(II)-20260160

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗