Effect of Blood Flow-restricted Exercise Frequency on Strength Recovery Following Incomplete SCI
Effect of Blood Flow-restricted Resistance Exercise Frequency on Strength Recovery Following Incomplete Cervical Spinal Cord Injury
The goal of this clinical trial is to determine the effect of treatment frequency on the physical recovery of adults with incomplete spinal cord injury. The treatment will last for eight weeks and will occur either either two or three times weekly. The main research questions are:
- How do changes in muscle strength compare between participants who receive eight weeks of blood flow-restricted exercise two times vs. three times weekly?
- How do changes in the level of independence performing a selected functional task compare between participants who receive eight weeks of treatment two times vs. three times weekly?
- How do changes in the perceived exertion needed to perform a functional task compare between participants who receive eight weeks of treatment two times vs. three times weekly?
The researchers will compare people receiving treatment two vs. three times per week to see if they differ in the amount of change seen in muscle strength, level of independence performing a functional task requiring use of the targeted muscle group, and/or perceived exertion required to perform the functional task.
Participants will:
- complete three pre-treatment evaluation sessions to establish muscle strength, level of independence performing a functional task, and perceived exertion required to perform a functional task.
- perform four sets of 20 muscle contraction repetitions of blood flow-restricted exercise on the left and right sides of the body using the targeted muscle group either two times or three times weekly depending on treatment group assignment.
- complete three post-treatment evaluation sessions to establish muscle strength, level of independence performing a functional task, and perceived exertion required to perform a functional task.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Participants in both treatment groups will receive blood flow-restricted (BFR) intervention for eight weeks. Other than substituting BFR exercises for those typically performed with the target muscle group, a participant's established treatment program will not change with study enrollment.
Participants will engage in pre-treatment data collection measuring the strength and functional use of the target muscle group for three consecutive days before beginning the BFR protocol. We will use a dynamometer to measure in Newtons the maximum force a participant can exert with the left and right target muscle. To measure functional use, we will assess the assistance a participant needs to perform a designated functional task using the Functional Independence Measure (FIM) rating scale. Participants will rate their perceived effort with the Borg category-ratio 10 Rating of Perceived Exertion (Borg) scale.
Each BFR exercise session will begin with measuring resting blood pressure to ensure it is between 80/50 mmHg and 150/90 mmHg. We will then place a 50% inflated pneumatic cuff either with or without an electrical stimulation (ES) device, as appropriate, on the participant's target limb. The participant will perform 4 sets of 20 low-dose contractions of the target muscle with 30 s rest between sets. We will only use ES supplementation when a participant can not perform additional set repetitions independently. Resistance band placement will increase repetition difficulty as strength increases. The treatment regimen will then repeat with the contralateral limb.
We will repeat the measurement of muscle strength and functional task performance for three consecutive days at the conclusion of the eight-week treatment regimen. Again, we will rate the assistance provided for functional task performance using the FIM scale, and the participant will report the effort exerted using the Borg scale.
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Nebraska
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Omaha, Nebraska, Verenigde Staten, 68104
- Quality Living, Inc.
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- A current client receiving treatment for a spinal cord injury at Quality Living, Inc.
Exclusion Criteria:
- Does not speak English
- Can not follow commands
- Recent history of deep vein thrombosis, autonomic dysreflexia, orthostatic hypotension, or cardiovascular disease
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Actieve vergelijker: Two times per week
Participants will received blood flow-restricted exercise treatment two times per week for eight weeks.
Treatment will target one muscle group both on the left and right side of the body.
Participants will complete four sets of 20 muscle contraction repetitions with a 30-second rest period between each set.
If a participant can not complete all 20 repetitions in a set, they will receive electrical stimulation to the muscle to prompt performance of the remaining set contractions.
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Blood flow-restricted exercise involves performance of low-load contractions of a target muscle group while a pneumatic cuff placed proximally on the limb partially restricts blood flow to muscles and venous return to central circulation.
Andere namen:
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Actieve vergelijker: Three times per week
Participants will received blood flow-restricted exercise treatment three times per week for eight weeks.
Treatment will target one muscle group both on the left and right side of the body.
Participants will complete four sets of 20 muscle contraction repetitions with a 30-second rest period between each set.
If a participant can not complete all 20 repetitions in a set, they will receive electrical stimulation to the muscle to prompt performance of the remaining set contractions.
|
Blood flow-restricted exercise involves performance of low-load contractions of a target muscle group while a pneumatic cuff placed proximally on the limb partially restricts blood flow to muscles and venous return to central circulation.
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Torque in Newton-meters
Tijdsspanne: Three consecutive days pre- and post-treatment
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Rotational force exerted when contracting the target muscle group
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Three consecutive days pre- and post-treatment
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Andere uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Functional Independence Measure rating
Tijdsspanne: Three consecutive days pre- and post-treatment
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The Functional Independence Measure (FIM) is a seven-point scale (i.e., 1=total assistance, 7=complete independence) for quantifying the support needed for a participant to perform a designated functional task.
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Three consecutive days pre- and post-treatment
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Borg category-ratio 10 Rating of Perceived Exertion scale
Tijdsspanne: Three consecutive days pre- and post-treatment
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The Borg category-ratio 10 Rating of Perceived Exertion scale (Borg) provides a means for participants to rate their perceived effort during functional task performance (0=no exertion; 10=highest effort possible).
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Three consecutive days pre- and post-treatment
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie directeur: Karen Hux, Ph.D., Quality Living, Inc.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- BFR exercise frequency
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
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