Effects of Functional Electrical Stimulation on Metaboreflex Activation in Healthy Individuals
Effects of Functional Electrical Stimulation Compared to Isometric Exercise on Metaboreflex Activation in Healthy Individuals: Randomized Crossover Clinical Trial
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Gedetailleerde beschrijving
Studietype
Studietype
Inschrijving (Verwacht)
Inschrijving
Fase
Fase
- Vroege fase 1
Contacten en locaties
Studiecontact
Studiecontact
- Naam: Beatriz Dr Schaan, PhD
- Telefoonnummer: +55 5193138534
- E-mail: beatrizschaan@gmail.com
Studie Contact Back-up
- Naam: Aline Dr Macedo, Graduate
- Telefoonnummer: +55 5197016966
- E-mail: alinechagastelles@gmail.com
Studie Locaties
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RS
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Porto Alegre, RS, Brazilië, 90035-003
- Werving
- Hospital de Clinicas de Porto Alegre
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Hoofdonderzoeker:
- Beatriz Schaan, PhD
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Contact:
- Aline Macedo, Graduate
- Telefoonnummer: +55 51 97016966
- E-mail: alinechagastelles@gmail.com
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Healthy individuals
- Both genders
- Aged 35-70 years
- Sedentary
- Not using continuous medications
Exclusion Criteria:
- Cardiovascular disease
- Neurological disease
- Malignant disease
- Peripheral vascular disorders (varicose veins or deep vein thrombosis)
- Peripheral sensitivity alterations
- Contraindication to performing physical exercise
- Refusal to sign the consent form
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Crossover-opdracht
- Masker: Enkel
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Experimenteel: Functional electric stimulation
Other: The FES will be placed at the flexor muscles of the forearm and knee extensors, for evaluation of upper and lower limbs, respectively.
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The FES will be placed at the flexor muscles of the forearm and knee extensors, for evaluation of upper and lower limbs, respectively.
The stimulation frequency will be 20 Hz.
The pulse width used will be 0.5 milliseconds and the contraction time will be 60 seconds (TON: 60s) with a 1-second rest interval (TOFF: 1s).
The total time of application will be determined for the muscle fatigue that will be evaluated by 10-point Borg scale and by the measurement of lactate accumulation that must not exceed 30 minutes.
The intensity will be adjusted individually, taking into account the patient's ability to promote the full flexion of the wrist / knee extension and comfort during contractions.
Along with the application of FES a 1 Kg overload will be applied to intensify the fatigue time.
Andere namen:
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Placebo-vergelijker: Isometric exercise
For the upper limbs the isometric contraction exercise with handgrip will be performed for 5 minutes with 30% of loading, previously measured by maximum voluntary contraction test.
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For the upper limbs the isometric contraction exercise with handgrip will be performed for 5 minutes with 30% of loading, previously measured by maximum voluntary contraction test.
For the lower limbs the knee extension exercise will be conducted in a training station.
The SBP, DBP, MBP and HR will be recorded through the protocols.
Fatigue will be determined every minute by the 10-point Borg scale and by measurement of lactate accumulation before, immediately after the protocol, and 5 minutes during the recovery period.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Forearm and calf blood flow change
Tijdsspanne: 5 minutes of exercise ( when PECO-) or to fatigue (when PECO +)
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When performed the protocol with FES measurements will be taken for 3 minutes of rest (in both PECO+ and PECO-), 5 minutes of exercise (when PECO-) or to fatigue (when PECO +), during the 3 minutes of occlusion (when PECO +) and 3 minutes final recovery (in both PECO+ and PECO-).
When performed the protocol with isometric exercise measurements will be at 3 minutes basal (in both PECO+ and PECO-), 3 minutes of exercise (in both PECO+ and PECO-), 3 minutes of occlusion when PECO + and 3 minutes of ultimate recovery (in both PECO+ and PECO-).
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5 minutes of exercise ( when PECO-) or to fatigue (when PECO +)
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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Maximum muscle strength
Tijdsspanne: The maximum peak strength will be measured 3 times with 1 minute interval between each measurement before a session of isometric exercise
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Before starting the evaluations of blood flow, the maximum peak strength is measured three times with 1 minute interval between each measurement, after is calculated 30% of the maximum value and the determined load exercise.
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The maximum peak strength will be measured 3 times with 1 minute interval between each measurement before a session of isometric exercise
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Peripheral vascular resistance
Tijdsspanne: It is calculated using data obtained from blood flow and mean arterial pressure in the protocols at 3 minutes in both PECO+ and PECO-
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Ratio between the mean arterial pressure (MBP) and muscle blood flow.
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It is calculated using data obtained from blood flow and mean arterial pressure in the protocols at 3 minutes in both PECO+ and PECO-
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Medewerkers en onderzoekers
Sponsor
Sponsor
Onderzoekers
Onderzoekers
- Hoofdonderzoeker: Beatriz Dr Schaan, PhD, Hospital de Clinicas de Porto Alegre
- Studie stoel: Aline Macedo, Graduate, Federal University of Rio Grande do Sul
Publicaties en nuttige links
Algemene publicaties
- Sbruzzi G, Ribeiro RA, Schaan BD, Signori LU, Silva AM, Irigoyen MC, Plentz RD. Functional electrical stimulation in the treatment of patients with chronic heart failure: a meta-analysis of randomized controlled trials. Eur J Cardiovasc Prev Rehabil. 2010 Jun;17(3):254-60. doi: 10.1097/HJR.0b013e328339b5a2.
- Mitchell JH. J.B. Wolffe memorial lecture. Neural control of the circulation during exercise. Med Sci Sports Exerc. 1990 Apr;22(2):141-54. No abstract available.
- Rowell LB, O'Leary DS. Reflex control of the circulation during exercise: chemoreflexes and mechanoreflexes. J Appl Physiol (1985). 1990 Aug;69(2):407-18. doi: 10.1152/jappl.1990.69.2.407.
- Kim JK, Sala-Mercado JA, Rodriguez J, Scislo TJ, O'Leary DS. Arterial baroreflex alters strength and mechanisms of muscle metaboreflex during dynamic exercise. Am J Physiol Heart Circ Physiol. 2005 Mar;288(3):H1374-80. doi: 10.1152/ajpheart.01040.2004. Epub 2004 Nov 11.
- Karavidas AI, Raisakis KG, Parissis JT, Tsekoura DK, Adamopoulos S, Korres DA, Farmakis D, Zacharoulis A, Fotiadis I, Matsakas E, Zacharoulis A. Functional electrical stimulation improves endothelial function and reduces peripheral immune responses in patients with chronic heart failure. Eur J Cardiovasc Prev Rehabil. 2006 Aug;13(4):592-7. doi: 10.1097/01.hjr.0000219111.02544.ff.
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Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Andere studie-ID-nummers
Andere studie-ID-nummers
- 14-0359
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