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Respiratory and Relaxation Training in Lower Extremity Lymphedema

10. juli 2026 opdateret af: Idil Esin Unlu, Toros University

Effect of Respiratory and Relaxation Training Added to Complex Decongestive Therapy on Functional Capacity and Muscle Oxygenation in Patients With Lower Extremity Lymphedema: A Single-Center Randomized Controlled Trial

This randomized controlled trial aims to investigate the effectiveness of respiratory and relaxation training added to standard complex decongestive therapy (CDT) on muscle oxygenation, functional capacity, and limb volume in patients with lower extremity lymphedema. Participants will be randomly assigned to receive either standard CDT alone or CDT combined with respiratory and relaxation exercises. Outcomes will be assessed before treatment, immediately after treatment, and two months after completion.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Lower extremity lymphedema is a chronic condition characterized by impaired lymphatic drainage, limb swelling, pain, reduced physical function, and decreased quality of life. Complex decongestive therapy (CDT) is considered the gold standard treatment; however, additional interventions that may improve physiological and functional outcomes remain under investigation.

Respiratory exercises may facilitate lymphatic return through changes in intrathoracic pressure, whereas relaxation training may reduce sympathetic activation and improve exercise tolerance. Despite these theoretical benefits, there is limited evidence regarding their combined effect on muscle oxygenation in patients with lower extremity lymphedema.

Therefore, this randomized controlled study will evaluate whether adding respiratory and relaxation training to CDT improves muscle oxygenation measured by wearable near-infrared spectroscopy (MOXY), functional capacity assessed with the Six-Minute Walk Test, and limb volume compared with CDT alone.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

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Studiekontakt

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

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Ingen

Beskrivelse

Inclusion Criteria:

  • Female patients aged 18 years or older.
  • Clinically diagnosed with secondary lower extremity lymphedema.
  • Presence of lower extremity lymphedema for at least 3 months.
  • Able to stand and walk independently to complete the Six-Minute Walk Test.
  • Willing and able to provide written informed consent.

Exclusion Criteria:

  • Acute cellulitis or other active infection within the previous 2-4 weeks.
  • Current or recent deep vein thrombosis (DVT) or uncontrolled peripheral vascular disease.
  • Severe cardiovascular, pulmonary, orthopedic, or neurological conditions that could interfere with participation or outcome assessments.
  • Pregnancy.
  • Skin lesions or irritation preventing placement of the near-infrared spectroscopy (MOXY) sensor.
  • Inability to comply with the study protocol or follow-up assessments.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Respiratory and relaxation
Participants in this group will receive standard Complex Decongestive Therapy (CDT), including manual lymphatic drainage, compression therapy, skin care, and therapeutic exercises, together with respiratory and relaxation training. Respiratory and relaxation exercises will be performed for approximately 10-20 minutes following each CDT session over 15 treatment sessions. Participants will also perform a daily home exercise program.
Andet: Complex Decongestive Therapy
Standard Complex Decongestive Therapy consisting of manual lymphatic drainage, compression therapy (bandaging and/or compression garments), skin care education, and therapeutic exercises. Treatment will be provided in 15 sessions according to the standard clinical protocol.
Andet: Respiratory and Relaxation Training
A structured respiratory and relaxation program performed after each Complex Decongestive Therapy session. The intervention includes diaphragmatic breathing, thoracic expansion exercises, prolonged expiration breathing, and progressive muscle relaxation or breathing awareness exercises for approximately 10-20 minutes per session. Participants will also be instructed to perform the exercises at home once or twice daily.
Aktiv komparator: Complex Decongestive Therapy
Participants in this group will receive standard Complex Decongestive Therapy (CDT), including manual lymphatic drainage, compression therapy, skin care, and therapeutic exercises for 15 treatment sessions.
Andet: Complex Decongestive Therapy
Standard Complex Decongestive Therapy consisting of manual lymphatic drainage, compression therapy (bandaging and/or compression garments), skin care education, and therapeutic exercises. Treatment will be provided in 15 sessions according to the standard clinical protocol.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Muscle Oxygen Saturation
Tidsramme: Baseline, immediately after 15 treatment sessions, and 2-month follow-up
Muscle oxygen saturation will be assessed using a wearable near-infrared spectroscopy device placed over the vastus lateralis muscle. SmO₂ values will be recorded before, during, and after the Six-Minute Walk Test.
Baseline, immediately after 15 treatment sessions, and 2-month follow-up

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change in Six-Minute Walk Test Distance
Tidsramme: Baseline, immediately after 15 treatment sessions, and 2-month follow-up
Functional capacity will be assessed using the Six-Minute Walk Test. The total walking distance covered in six minutes will be recorded in meters.
Baseline, immediately after 15 treatment sessions, and 2-month follow-up
Change in Lower Extremity Limb Volume
Tidsramme: Baseline, immediately after 15 treatment sessions, and 2-month follow-up
Limb volume will be calculated from serial circumference measurements taken at 4-cm intervals from the lateral malleolus using the truncated cone formula.
Baseline, immediately after 15 treatment sessions, and 2-month follow-up

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Toros University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. marts 2026

Primær færdiggørelse (Anslået)

1. marts 2027

Studieafslutning (Anslået)

1. marts 2027

Datoer for studieregistrering

Først indsendt

6. juli 2026

Først indsendt, der opfyldte QC-kriterier

10. juli 2026

Først opslået (Faktiske)

13. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 25.02.2026-1213/23

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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