Prevalence and factors associated with post COVID-19 syndrome

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20230918002

Enrollment

166

Registered

2023-09-18

Start date

2023-01-23

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Post COVID-19 syndrome Post COVID-19 syndrome, Prevalence,

Interventions

Individuals with post covid-19 symptoms

Screening

post covid

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Aged between 18 and 60 years. 2. Experiencing at least one of the following post-COVID-19 symptoms for a duration of at least four weeks after the COVID-19 infection: fatigue, dyspnea, musculoskeletal pain, cough, headache, palpitation, decreased exercise capacity, loss of appetite, nausea, etc. 3. Have received a diagnosis of COVID-19 infection through RT-PCR or ATK testing. 4. Capable of effective communication and able to follow instructions.

Exclusion criteria

Exclusion criteria: 1. History of cardiovascular diseases. 2. History of syncope or autonomic abnormalities before COVID-19 infection. 3. Use of drugs affecting the autonomic nervous system, e.g., beta-blockers, etc. 4. Alcoholism or current smoking. 5. Pregnancy. 6. History of cleft lip and cleft palate. 7. Body temperature exceeding 37.5 degrees Celsius. 8. Unstable cardiovascular function: heart rate > 100 bpm, blood pressure < 90/60 mmHg or > 140/90 mmHg, or SpO2 less than 95%.

Design outcomes

Primary

Measure	Time frame
Prevalence of respiratory disorder First visit of study Borg scale, mmRc, pulmonary function test,Prevalence of neurocognitive disorder First visit of study Montreal Cognitive Assessment (MoCA) score,Prevalence of autonomic dysfunction First visit of study Deep breathing test, Head-up tilt table test, NASA 10-minute lean test,Prevalence of mental health disorder First visit of study State anxiety inventory, depression, and risk of suicide questionnaires,Prevalence of musculoskeletal disorder First visit of study Fatigue Severity Scale,Prevalence of exercise Intolerance First visit of study 1-minute sit to stand test, the modified Bruce protocol	—

Measure

Time frame

Prevalence of respiratory disorder First visit of study Borg scale, mmRc, pulmonary function test,Prevalence of neurocognitive disorder First visit of study Montreal Cognitive Assessment (MoCA) score,Prevalence of autonomic dysfunction First visit of study Deep breathing test, Head-up tilt table test, NASA 10-minute lean test,Prevalence of mental health disorder First visit of study State anxiety inventory, depression, and risk of suicide questionnaires,Prevalence of musculoskeletal disorder First visit of study Fatigue Severity Scale,Prevalence of exercise Intolerance First visit of study 1-minute sit to stand test, the modified Bruce protocol

—

Secondary

Measure	Time frame
Cardiovascular responses to Head-up tilt table test and the NASA 10-minute lean test First visit of study Heart rate and blood pressure ,Exercise capacity of 1-minute sit to stand test and the modified Bruce protocol First visit of study Exercise time and time of sit-to-stand	—

Countries

Thailand

Contacts

Public ContactNontanat Sathaporn

Mae Fah Luang University

nontanat.sat@mfu.ac.th0867628925

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026