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Effects of an Osteopathic Manual Therapy Protocol on Heart Rate Variability, Stress, and Anxiety in Young Adults

3 luglio 2026 aggiornato da: Natália Maria Oliveira Campelo, Escola Superior de Tecnologia da Saúde do Porto

Effect of an Osteopathic Intervention Protocol on the Parasympathetic System on Stress and Anxiety in Young Adults: a Randomized Clinical Trial

Anxiety is characterized by excessive worry and anticipation of future threats, often accompanied by physiological and behavioral manifestations. Anxiety disorders are among the most prevalent mental health conditions worldwide and represent a significant public health concern, particularly among young adults and university students, who frequently experience academic, social, and financial stressors. The aim of this randomized clinical trial is to evaluate the effect of a protocol, consisting of 4 manual techniques, compared to a placebo group, in heart rate variability immediately after the intervention and in anxiety after one week in young adults. The main questions it aims to answer are:

Does the osteopathic intervention protocol influence the parasympathetic nervous system? Does the osteopathic intervention protocol influence anxiety and stress?

The researchers will compare the osteopathic protocol to a placebo (simulation technique), in order to see if the protocol influences anxiety and stress. Participants will:

Prior to the intervention, complete the EADS questionnaire and undergo measurement of heart rate variability; Undergo the protocol or placebo; Immediately after the intervention, they will undergo the measurement of heart rate variability; After one week in the intervention, complete the questionnaire EADS.

Panoramica dello studio

Descrizione dettagliata

Stress and anxiety are highly prevalent mental health conditions, particularly among young adults and university students, and are associated with reduced well-being, impaired academic performance, and autonomic nervous system (ANS) dysregulation. Increased sympathetic activity and reduced parasympathetic activity have been linked to psychological distress, with heart rate variability (HRV) being recognized as a reliable biomarker of autonomic function. Lower HRV parameters, particularly RMSSD and pNN50, have been associated with higher levels of stress and anxiety.

Osteopathic Manipulative Treatment (OMT) may influence autonomic regulation by reducing musculoskeletal tension and promoting parasympathetic activity. The present randomized controlled trial aims to investigate the effects of a manual therapy protocol consisting of Compression of the Fourth Ventricle (CV4), suboccipital decompression, diaphragmatic myofascial release, and sacral rocking on HRV, stress, and anxiety in young adults. These techniques were selected based on their potential influence on vagal activity, respiratory mechanics, and autonomic nervous system regulation.

Participants will be randomly allocated to either an intervention group receiving the manual therapy protocol or a placebo group. The primary outcome is the immediate effect of the intervention on HRV parameters (RMSSD and pNN50), while secondary outcomes include changes in self-reported stress and anxiety symptoms one week after the intervention (EADS-21). The study aims to determine whether a single-session manual therapy protocol can improve autonomic regulation and reduce short-term symptoms of stress and anxiety.

Tipo di studio

Interventistico

Iscrizione (Stimato)

30

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

  • Nome: Natália MO Campelo, PhD
  • Numero di telefono: +351 222 061 000
  • Email: nmc@ess.ipp.pt

Luoghi di studio

    • Porto District
      • Porto, Porto District, Portogallo, 4200-072
        • Escola Superior de Saúde do Porto

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  • age between 18 and 35 years old;
  • presence of symptoms/diagnosis of stress and/or anxiety in the last week.

Exclusion Criteria:

  • individuals with cognitive impairments that prevent participation;
  • individuals with cardiovascular problems;
  • pregnant women;
  • those taking medications that affect cardiac function, anxiolytics, and antidepressants;
  • caffeine consumption in the last 4 hours;
  • alcohol consumption in the previous 24 hours;
  • tobacco use in the last 48 hours;
  • recent cervical trauma;
  • students of osteopathy.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Doppio

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Experimental Group
Osteopathic Intervention Protocol
This technique is performed with the patient in the supine position and lower limbs straight. The technique, according to Sutherland consists of a slight compression performed with the thenar eminence of the Osteopath in the supraoccipital region, precisely on the scale of the patient's occipital bone with compression initiated by the expiration phase of the primary respiratory mechanism and maintaining the compression for 5 min.
The patient is in the supine position, in maximum comfort. The Osteopath is located at the bedside of the table seated. Place both hands inferior to the occiput, and apply pressure to the area located between the occiput and axis, with the distal phalanges of your fingers. Then, apply a force in the anterior and cranial direction. The application of force should be maintained for 5 minutes.
The patient must position himself in the supine position with the lower limbs relaxed, the Osteopath must be at the head of the table and make a manual contact on the lower edge of the last costal arch, in the phase of inspiration the hands of the Osteopath bring laterally and cephalically the diaphragm, following the elevation of the ribs. During expiration, the Osteopath increases contact with the internal costal margin, maintaining resistance. The technique should be performed in a set of 10 deep breaths on each side, with a one-minute interval between them.
The patient is in the prone position. The therapist is positioned laterally at the level of the patient's hip and places the palm of the cephalic hand over the spinous of the first spiny of the sacrum and allows his fingers to rest on the rest of the sacrum. The therapist's caudal hand is placed on the other hand with the thenar and hypothenar zone on the fourth and fifth spinous of the sacrum and the fingers of that same hand towards the patient's head. The therapist instructs the patient to inhale deeply, and the therapist follows the natural movement of the sacral base afterwards. At the end of inspiration, the therapist applies light pressure with the caudal hand to exaggerate sacral extension. The therapist then instructs the patient to exhale and follows the sacrum in flexion. At the end of exhalation, the therapist applies and maintains light pressure with the cephalic hand to exaggerate sacral flexion. This process is repeated for 3 minutes.
Comparatore placebo: Control Group
Sham intervention
The patient is in the supine position and the Osteopath is seated at the head of the table, contacting the patient's skull with both hands as follows: 2nd finger on the greater wings of the sphenoid, 3rd finger on the temporal bone in front of the ears, 4th finger on the temporal bone behind the ears and 5th finger on the occipital bone, while the 1st finger rests on the head, and if possible in contact with each other to act as an external fixed point. To carry out this, the Osteopath only used the contacts, as described, in a period of 5 minutes, without any therapeutic intent.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change in Anxiety Score
Lasso di tempo: 1 week before intervention and 1 week after intervention
Anxiety symptoms assessed using the Anxiety subscale of the Portuguese version of the Depression Anxiety Stress Scale (DASS-21/EADS-21). Higher scores indicate greater anxiety symptoms.
1 week before intervention and 1 week after intervention
Change in Stress Score
Lasso di tempo: 1 week before intervention and 1 week after intervention
Stress symptoms assessed using the Stress subscale of the Portuguese version of the Depression Anxiety Stress Scale (DASS-21/EADS-21). Higher scores indicate greater stress symptoms.
1 week before intervention and 1 week after intervention
Heart Rate Variability (change in RMSSD and pNN50)
Lasso di tempo: Immediately before intervention and immediately after intervention.

Heart Rate Variability (HRV) is defined as the time between adjacent heartbeats (IBI). This is regulated by the interactions of the divisions of the autonomic nervous system.

The analysis of heart rate variability that allows the observation of the Fluctuations that occur over periods of time is a non-invasive method and selective observation of ANS function. For the analysis of the cardiovagal function, the methods developed typically involve the measurement of heart rate variability.

Root Mean Square of Successive Differences (RMSSD), a time-domain heart rate variability parameter reflecting parasympathetic nervous system activity, measured using a Polar H10 heart rate monitor and Elite HRV software.

Percentage of adjacent normal-to-normal intervals differing by more than 50 ms (pNN50), a heart rate variability parameter associated with parasympathetic activity, measured using a Polar H10 heart rate monitor and Elite HRV software.

Immediately before intervention and immediately after intervention.

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Investigatori

  • Investigatore principale: Natália MO Campelo, ESS

Pubblicazioni e link utili

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Pubblicazioni generali

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 giugno 2026

Completamento primario (Stimato)

1 agosto 2026

Completamento dello studio (Stimato)

1 settembre 2026

Date di iscrizione allo studio

Primo inviato

22 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

22 giugno 2026

Primo Inserito (Effettivo)

26 giugno 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

7 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

3 luglio 2026

Ultimo verificato

1 giugno 2026

Maggiori informazioni

Termini relativi a questo studio

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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