Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
NA
62 participants
INTERVENTIONAL
2022-09-01
2025-12-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
OTHER
DOUBLE
Study Groups
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Post-covid patients
High-Intensity-Interval-Exercise
Subjects will perform high-intensity-interval exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Moderate-Intensity-Continuous-Exercise
Subjects will perform moderate intensity continuous exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Strength training
Subjects will perform a series of a whole-body resistance exercises, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Baseline assessment
Subjects will perform a series of baseline assessment including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
1 year follow-up
Subjects will perform the same series of baseline assessment in 1-year time, including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
Control
High-Intensity-Interval-Exercise
Subjects will perform high-intensity-interval exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Moderate-Intensity-Continuous-Exercise
Subjects will perform moderate intensity continuous exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Strength training
Subjects will perform a series of a whole-body resistance exercises, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Baseline assessment
Subjects will perform a series of baseline assessment including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
1 year follow-up
Subjects will perform the same series of baseline assessment in 1-year time, including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
Interventions
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High-Intensity-Interval-Exercise
Subjects will perform high-intensity-interval exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Moderate-Intensity-Continuous-Exercise
Subjects will perform moderate intensity continuous exercise, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Strength training
Subjects will perform a series of a whole-body resistance exercises, where the acute exercise responses will be closely monitored, including measurements of O2 saturation, heart rate, blood pressure, borg scale and blood lactate. In addition, symptoms via multiple validated questionnaries and blood samples will be collected before, immediately after each exercise session to describe leukocyte and cytokine release as well as systemic metabolism. After a 48-hour rest period subjects will return to the laboratory for symptom assessment, submaximal exercise response (CPET), and blood sampling.
Baseline assessment
Subjects will perform a series of baseline assessment including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
1 year follow-up
Subjects will perform the same series of baseline assessment in 1-year time, including neurophysiological function, circulatory and vascular function, blood volume assessment, respiratory/ventilatory function, maximal oxygen uptake, strength, physical function and fitness, blood status and muscle biopsy.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Symptoms persisting for at least 3 months (validaded with DSQ-PEM questionnarie) (only for post-COVID group)
Exclusion Criteria
* Previous history cardiovascular, respiratory disease or other autoimmune disease
* History of general anxiety syndrome or somatic symptom disorder
18 Years
64 Years
ALL
Yes
Sponsors
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Karolinska University Hospital
OTHER
Karolinska Institutet
OTHER
Responsible Party
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Tommy Lundberg
Lecturer
Principal Investigators
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Thomas Gustafsson, Prof
Role: STUDY_CHAIR
Karolinska Institutet and Karolinska University Hospital
Helene Rundqvist, PhD
Role: PRINCIPAL_INVESTIGATOR
Karolinska Institutet
Tommy Lundberg, PhD
Role: PRINCIPAL_INVESTIGATOR
Karolinska Institutet
Kaveh Pourhamidi, PhD
Role: STUDY_CHAIR
Karolinska University Hospital
Andrea Tryfonos, PhD
Role: STUDY_DIRECTOR
Karolinska Institutet
Locations
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Karolinska University Hospital Huddinge
Stockholm, Huddinge, Sweden
Countries
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References
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Tryfonos A, Jornaker G, Rundqvist H, Pourhamidi K, Melin M, Wallin H, Larsen FJ, Pantelios S, Mutvei AP, Tillander V, Tietge UJF, Diaz SP, Crafoord D, Lovric A, Fernandez-Gonzalo R, Rullman E, Stal P, Gustafsson T, Rundqvist H, Lundberg TR. Muscle Abnormalities in Nonhospitalised Patients With Post-COVID-19 Condition. J Cachexia Sarcopenia Muscle. 2025 Oct;16(5):e70085. doi: 10.1002/jcsm.70085.
Tryfonos A, Pourhamidi K, Jornaker G, Engvall M, Eriksson L, Elhallos S, Asplund N, Mandic M, Sundblad P, Sepic A, Rullman E, Hyllienmark L, Rundqvist H, Lundberg TR, Gustafsson T. Functional Limitations and Exercise Intolerance in Patients With Post-COVID Condition: A Randomized Crossover Clinical Trial. JAMA Netw Open. 2024 Apr 1;7(4):e244386. doi: 10.1001/jamanetworkopen.2024.4386.
Other Identifiers
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2021-05758-01
Identifier Type: -
Identifier Source: org_study_id
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