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CompletedNCT04789512Updated Apr 1, 2021

Respiratory Muscle Strength in Volleyball Players Suffered From COVID-19

An observational study in Covid19, sponsored by Gazi University. Completed at 1 site in Turkey. Open to female participants aged 15 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-04-01.

Sponsored by Gazi University · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
42
Ages
15 Years to 35 Years
Sex
Female
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Study summary

In literature, there is no data evaluating respiratory functions in volleyball players during Covid-19 pandemic. The aim of this study is to evaluate and compared pulmonary functions, respiratory muscle strength, body compositions and performance situations perceptions in female volleyball players with Covid-19 and non-Covid-19.

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Conditions studied

  • Covid19

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Keywords

  • respiratory muscles
  • pulmonary functions
03

In context

COVID-19

7,641 studies on the registry are indexed under COVID-19; 487 are open to participants now.

This study's enrollment of 42 is below the median of 261 across 3,136 observational studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

Gazi University is the lead sponsor of 532 studies on the registry; 99 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
15 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

Female volleyball players

Inclusion criteria

  • having passed at least 30 days after the Polymerase Chain Reaction (PCR) test turned negative
  • willing to participate in the study

Exclusion criteria

Exclusion Criteria:

  • having a history of chronic lung disease
  • unwilling to participate in the study
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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
42 participants (actual)
Patient registry
No

Groups and cohorts

  • Covid-19 players

    Female volleyball players with Covid-19

    Other: Respiratory functions

  • non-Covid-19 players

    Female volleyball players with non Covid-19

    Other: Respiratory functions

Interventions

  • OtherRespiratory functions

    Respiratory muscle strength, pulmonary functions and body composition were evaluated in volleyball players

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What researchers measure

Primary outcomes

  1. Respiratory muscle strength

    Maximal inspiratory and expiratory muscle strength will be evaluated using mouth pressure device.

    Time frame: 10 minute

Secondary outcomes

  1. FEV1

    Pulmonary function tests will be performed using a spirometry according to the American Thoracic Society and European Respiratory Society criteria. FEV1 will be evaluated. The percentage of predicted value \<70% will be expressed as abnormal.

    Time frame: 5 minute

  2. FVC

    Pulmonary function tests will be performed using a spirometry according to the American Thoracic Society and European Respiratory Society criteria. FVC will be evaluated. The percentage of predicted value \<70% will be expressed as abnormal

    Time frame: 5 minute

  3. FEV1/FVC

    Pulmonary function tests will be performed using a spirometry according to the American Thoracic Society and European Respiratory Society criteria. FEV1/FVC will be evaluated.

    Time frame: 5 minute

  4. PEF

    Pulmonary function tests will be performed using a spirometry according to the American Thoracic Society and European Respiratory Society criteria. PEF will be evaluated. The percentage of predicted value \<70% will be expressed as abnormal.

    Time frame: 5 minute

  5. FEF2575

    Pulmonary function tests will be performed using a spirometry according to the American Thoracic Society and European Respiratory Society criteria. FEF2575 will be evaluated. The percentage of predicted value \<50% will be expressed as abnormal.

    Time frame: 5 minute

  6. Fat mass

    Fat mass will be evaluated using TANITA bioelectrical impedance analysis.

    Time frame: 2 minute

  7. Fat mass percent

    Fat mass percent will be evaluated using TANITA bioelectrical impedance analysis.

    Time frame: 2 minute

  8. Fat-free mass

    Fat-free mass will be evaluated using TANITA bioelectrical impedance analysis.

    Time frame: 2 minute

  9. Body mass index

    Body mass index will be evaluated using TANITA bioelectrical impedance analysis.

    Time frame: 2 minute

  10. Predicted muscle mass

    Predicted muscle mass will be evaluated using TANITA bioelectrical impedance analysis.

    Time frame: 2 minute

  11. Symptom severity perceptions

    Symptom severity perceptions will be evaluated Numeric Rating Scale.The severity of symptoms perceptions related to Covid are scored 0-10 point. Higher scores indicate higher severity of symptoms.

    Time frame: 1 minute

  12. Performance situations perceptions

    Performance situations perceptions will be evaluated Numeric Rating Scale. Performance situations perceptions of all players are also scored 0-10 point. Higher scores indicate greater performance.

    Time frame: 1 minute

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Study locations

1 site
  • Gazi University
    Ankara, Çankaya 06490, Turkey
08

References and documents

Publications

  • Celik Z, Guzel NA, Kafa N, Kokturk N. Respiratory muscle strength in volleyball players suffered from COVID-19. Ir J Med Sci. 2022 Oct;191(5):1959-1965. doi: 10.1007/s11845-021-02849-z. Epub 2021 Nov 8. PubMed 34748144 ↗

Individual participant data

Plan to share: Yes

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 1, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04789512
Lead sponsor
Gazi University
Responsible party
Zeliha ÇELİK (Research assistant, Gazi University) — Principal investigator
First posted
Mar 9, 2021
Start date
Mar 1, 2021
Primary completion
Mar 26, 2021
Completion
Mar 29, 2021
Last update
Apr 1, 2021

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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