NCT05228665

Brief Summary

Long COVID is a common but highly debilitating illness which develops after infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or COVID-19). It is thought to affect as many as 1 in 7 people following COVID-19 infection. It can produce a vast array of symptoms including fatigue, breathlessness, fast heart rate, blood pressure disturbance, temperature disturbance, and dry mouth. Many of these symptoms could be explained by the nervous system being predominantly in a stress or 'fight or flight' response, also known as dysautonomia. One way of assessing whether this is the case is by measuring heart rate variability (HRV). This is the time variation between heart beats and is a marker of how stressed the nervous system is or how strong is the 'fight or flight' response. Heart rate variability can be measured using devices which are worn round the wrist or attach to the chest. An increased variability in heart rate corresponds with a more relaxed nervous system and decreased variability with a more stressed nervous system. Monitoring HRV in real-time and implementing interventions such as a breathing regime to maximise HRV is known as HRV biofeedback. The body can be trained out of the fight or flight response and into the 'rest and digest' mode response of the nervous system in this way and potentially significantly improve symptoms. We propose that for people with Long COVID, a programme of structured breathing exercises over 4 weeks whilst tracking HRV can demonstrate an improvement in HRV and consequently improve Long COVID symptoms.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
30

participants targeted

Target at below P25 for not_applicable covid19

Timeline
Completed

Started Jan 2022

Longer than P75 for not_applicable covid19

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 24, 2022

Completed
6 days until next milestone

First Submitted

Initial submission to the registry

January 30, 2022

Completed
9 days until next milestone

First Posted

Study publicly available on registry

February 8, 2022

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2023

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2024

Completed
Last Updated

October 24, 2022

Status Verified

October 1, 2022

Enrollment Period

1.9 years

First QC Date

January 30, 2022

Last Update Submit

October 20, 2022

Conditions

Keywords

Long CovidPost-Covid SyndromePost-Covid ConditionPost-Acute Covid SyndromeAutonomic Nervous System

Outcome Measures

Primary Outcomes (1)

  • Modified C19-YRS (COVID-19 Yorkshire Rehabilitation Scale)

    The C19-YRSm will be completed by the patient every week for a total of 6 weeks. There will be a total of 7 C19-YRSm documents completed. The C19-YRSm consists of 17 items with each item rated on a 4-point numerical rating scale from 0 (no symptom) to 3 (life disturbing or affecting all aspects of daily life). The C19-YRSm is divided into four subscales (range of total score for each subscale): symptom severity score (0-30), functional disability score (0-15), other symptoms (0-25), and overall health (0-10). A higher score for the first 3 subscores represents higher severity. Conversely, a lower overall health score represents greater severity.

    Up to 6 weeks

Secondary Outcomes (1)

  • HRV (Heart Rate Variability) score

    Up to 6 weeks

Other Outcomes (4)

  • COMPASS 31(Composite Autonomic Symptom Score)

    Up to 6 weeks

  • EQ5D-5L(EuroQol Five Dimension Quality of Life)

    Up to 6 weeks

  • aAP(Adapted Autonomic Profile)

    Up to 6 weeks

  • +1 more other outcomes

Study Arms (1)

Prospective cohort

EXPERIMENTAL

Participants will be shown a paced breathing programme and instructed to implement this for 10 minutes twice daily for 4 weeks. During the 10-minute breathing exercises, the participant will need to wear the Polar H10 chest strap and can remove this when finished. The breathing will ideally be a breathing pattern of a 4-second nasal inhale, and 6-second nasal exhale using the 'resonance' programme in the 'biofeedback' section of EliteHRV app. They will be advised to monitor the graph of HRV on EliteHRV which allows real-time assessment of HRV and to aim to breathe in and out deeply to raise the HRV graph reading as much as possible each time. They will be advised to perform the breathing programme lying down with minimal distractions on waking in the morning and just before bed in the evening, preferably in the same location each time.

Behavioral: Heart Rate Variability Biofeedback (HRV-B)

Interventions

Breathing technique twice every day (10 min each) to increase HRV

Prospective cohort

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age \> 18 years
  • Confirmed Long COVID based on a positive PCR or antibody test and Long COVID symptoms as per the NICE criteria for post-COVID syndrome
  • Current Leeds COVID Rehabilitation service user
  • Self-rating of 'moderate/severe' on the Leeds COVID Rehabilitation Service Long COVID participant reported outcome measure (known as C19-YRS)
  • Abnormal NASA Lean Test (NLT)

You may not qualify if:

  • Age \< 18 years
  • Unable to use the wearable or smartphone app technology
  • Cognitive problems or mental health disorders causing inability to consent
  • Cardiac arrhythmia (current or prior tachyarrhythmia or bradyarrhythmia)
  • Existing significant cardiorespiratory disease which might be expected to affect studied symptoms of palpitations, presyncope, breathlessness and fatigue (asthma not included in this definition)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Leeds Community Healthcare NHS Trust

Leeds, Yorkshire, LS12 5SG, United Kingdom

RECRUITING

Related Publications (2)

  • Corrado J, Iftekhar N, Halpin S, Li M, Tarrant R, Grimaldi J, Simms A, O'Connor RJ, Casson A, Sivan M. HEART Rate Variability Biofeedback for LOng COVID Dysautonomia (HEARTLOC): Results of a Feasibility Study. Adv Rehabil Sci Pract. 2024 Jan 28;13:27536351241227261. doi: 10.1177/27536351241227261. eCollection 2024 Jan-Dec.

  • Corrado J, Halpin S, Preston N, Whiteside D, Tarrant R, Davison J, Simms AD, O'Connor RJ, Casson A, Sivan M. HEART rate variability biofeedback for long COVID symptoms (HEARTLOC): protocol for a feasibility study. BMJ Open. 2022 Nov 21;12(11):e066044. doi: 10.1136/bmjopen-2022-066044.

MeSH Terms

Conditions

COVID-19Post-Acute COVID-19 Syndrome

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesPost-Infectious DisordersChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Manoj Sivan, MD

    University of Leeds

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Manoj Sivan, MD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: Prospective cohort
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor and Consultant in Rehabilitation Medicine

Study Record Dates

First Submitted

January 30, 2022

First Posted

February 8, 2022

Study Start

January 24, 2022

Primary Completion

December 31, 2023

Study Completion

March 31, 2024

Last Updated

October 24, 2022

Record last verified: 2022-10

Data Sharing

IPD Sharing
Will share

Data will be made available on requesting the corresponding author

Shared Documents
STUDY PROTOCOL, SAP, ICF, CSR, ANALYTIC CODE
Time Frame
After completion of data collection from 30 participants
Access Criteria
Open Science Framework registration
More information

Locations