- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07635979
Physiological Responses to Upper Limb NMES
Exploring Local Physiological Changes in the Arm During NMES Using the Firefly® Device
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Participants will undergo NMES using the Firefly® device, applied to two predefined regions of the upper limb: one targeting the anterior arm nerve bundle (a collective term referring to motor and sensory nerves within the anterior and medial compartments of the upper arm, including the musculocutaneous and adjacent (median, medial cutaneous, ulnar and radial) nerves, and the other targeting the median nerve in the proximal forearm.
Vascular responses will be assessed at two sites, the brachial artery and axillary vein, using Doppler ultrasound. For each nerve-vascular site pairing, NMES will alternate between stimulation OFF and ON conditions (10 OFF and 10 ON cycles), comprising one stimulation block of approximately 20 minutes. Each participant will complete four stimulation blocks in total.
During both ON and OFF phases, blood flow volume and haemodynamic parameters, including peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistive index (RI), will be recorded. Additionally, local muscle oxygen saturation (SmO₂) will be continuously monitored using functional near-infrared spectroscopy (fNIRS) to assess tissue-level physiological changes.
The total study participation time per individual is approximately 2 hours.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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-
Buckinghamshire
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High Wycombe, Buckinghamshire, Vereinigtes Königreich, HP11 1JX
- Firstkind
-
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
- Aged 18 to 45 years (inclusive)
- No known history of vascular or neurological conditions affecting the upper extremities
- Able to read, understand, and communicate in English to ensure informed consent and safe participation in the study
Exclusion Criteria:
- Presence of any condition that contraindicates the use of neuromuscular electrical stimulation (e.g., implanted pacemaker, epilepsy)
- Current or recent injury to the upper limbs that may interfere with stimulation or measurement
- Anatomical variations in the brachial artery or axillary vein, specifically vascular branching outside expected anatomical locations, as identified by ultrasound, which may impair accurate blood flow measurement or device placement
- Currently participating in another interventional or physiological research study or having done so within the past 30 days.
- Currently pregnant
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: N / A
- Interventionsmodell: Einzelgruppenzuweisung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Experimental: Single experimental arm: Firefly NMES
|
Firefly NMES device applied to the upper limb during a single-visit exploratory pysiological study
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Change in upper-limb blood flow volume during NMES (ON vs OFF)
Zeitfenster: During single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles
|
Within-subject change in upper-limb blood flow volume (mL/min) measured using Doppler ultrasound during neuromuscular electrical stimulation (NMES) delivered via the Firefly device, comparing stimulation ON versus OFF conditions.
Measurements will be collected across repeated stimulation cycles at predefined upper-limb stimulation zones and vascular assessment sites.
|
During single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles
|
|
Change in upper-limb peak systolic velocity during NMES (ON vs OFF)
Zeitfenster: During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
Within-subject change in upper-limb peak systolic velocity (PSV; cm/s) measured using Doppler ultrasound during NMES delivered via the Firefly device, comparing stimulation ON versus OFF conditions across repeated stimulation cycles at predefined upper-limb stimulation zones and vascular assessment sites.
|
During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
|
Change in upper-limb end-diastolic velocity during NMES (ON vs OFF)
Zeitfenster: During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
Within-subject change in upper-limb end-diastolic velocity (EDV; cm/s) measured using Doppler ultrasound during NMES delivered via the Firefly device, comparing stimulation ON versus OFF conditions across repeated stimulation cycles at predefined upper-limb stimulation zones and vascular assessment sites.
|
During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
|
Change in upper-limb resistive index during NMES (ON vs OFF)
Zeitfenster: During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
Within-subject change in upper-limb resistive index (RI; unitless ratio) derived from Doppler ultrasound measurements during NMES delivered via the Firefly device, comparing stimulation ON versus OFF conditions across repeated stimulation cycles at predefined upper-limb stimulation zones and vascular assessment sites.
|
During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
|
Change in upper-limb muscle oxygen saturation during NMES (ON vs OFF)
Zeitfenster: During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
Within-subject change in upper-limb muscle oxygen saturation (SmO₂; %) measured continuously using functional near-infrared spectroscopy (fNIRS) during NMES delivered via the Firefly device, comparing stimulation ON versus OFF conditions across repeated stimulation cycles at predefined upper-limb stimulation zones and assessment sites.
|
During a single study visit (approximately 2 hours), across repeated stimulation ON/OFF cycles.
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Incidence of adverse events and device-related effects
Zeitfenster: During single study visit (approximately 2 hours)
|
Number and type of adverse events (AEs), serious adverse events (SAEs), adverse device effects (ADEs), serious adverse device effects (SADEs), and device deficiencies observed during study participation.
|
During single study visit (approximately 2 hours)
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Mitarbeiter und Ermittler
Sponsor
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Andere Studien-ID-Nummern
- FFR-ARM-002 (Andere Zuschuss-/Finanzierungsnummer: Firstkind)
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Beschreibung des IPD-Plans
Art der unterstützenden IPD-Freigabeinformationen
- STUDIENPROTOKOLL
- ICF
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Produkt, das in den USA hergestellt und aus den USA exportiert wird
Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .
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