Effects of Proximal Limb Blood Flow Restriction Training on Distal Limb Performance and Recovery

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dc.contributorAguiar, Elroy J
dc.contributorMacDonald, Hayley V
dc.contributorWind, Stefanie A
dc.contributor.advisorWinchester, Lee J
dc.contributor.authorSaffold, Keith
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2021-11-23T14:34:10Z
dc.date.available2021-11-23T14:34:10Z
dc.date.issued2021
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractPurpose: To determine if proximal limb blood flow restriction (BFR) influences muscular performance and recovery of the distal limb musculature (i.e., gastrocnemius, soleus, and tibialis anterior). Methods: Participants (N = 20; M±SD: 23.0 ± 3.8 years; 174.1 ± 9.0 cm; 77.9 ± 13.0 kg; 23.8 ± 8.6%body fat) completed a baseline visit and two experimental conditions consisting of exercise only (control; CON) and exercise with BFR. CON and BFR were performed in a counter-balanced order. Personal tourniquet pressure (PTP) was determined in each leg using the Delfi PTS II system at the BFR session only. Participants underwent the following assessments before and after each experimental visit: anatomical cross-sectional area (CSA) of the gastrocnemius, toe tap test, average stride length test, and counter-movement jump. The exercise protocol consisted of 3 sets of 15 repetitions of ankle plantarflexion (PF) and dorsiflexion (DF at 60 and 500 degrees per second, respectively, using an isokinetic dynamometer. Average force per repetition and total work performed were measured by the isokinetic dynamometer for both PF and DF during exercise. The only difference between BFR and CON was the application of BFR during the exercise protocol (unilateral occlusion at 80% of PTP, applied 30 s before initiating exercise on each leg). Two-way repeated measures analysis of variance (ANOVA) was performed to determine if changes in CSA, and measures of muscular strength and performance differed by BFR application (condition x time). Significance was set as p<0.05. Results: Average force per repetition and total work performed was lower during BFR compared to CON for both PF and DF (p<0.05 for both). CSA was increased post- versus pre-exercise following BFR compared to CON (p<0.05). Likewise, toe taps and stride length performance was decreased post- versus pre-exercise following BFR compared to CON(both p<0.05). Jump height decreased post- compared to pre-exercise with no difference between conditions (p<0.05). Conclusion: The addition of BFR to exercise elicited higher levels of muscular fatigue and decreased muscular performance compared to CON. These impairments were far greater than expected, producing significant reductions in force production, neuromuscular activation, and recovery rate.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otherhttp://purl.lib.ua.edu/181488
dc.identifier.otheru0015_0000001_0003927
dc.identifier.otherSaffold_alatus_0004M_14611
dc.identifier.urihttp://ir.ua.edu/handle/123456789/8159
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectBlood Flow Restriction
dc.subjectCalf
dc.subjectExercise
dc.subjectPerformance
dc.subjectRecovery
dc.subjectStrength
dc.titleEffects of Proximal Limb Blood Flow Restriction Training on Distal Limb Performance and Recoveryen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Kinesiology
etdms.degree.disciplineKinesiology
etdms.degree.grantorThe University of Alabama
etdms.degree.levelmaster's
etdms.degree.nameM.A.

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