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Sequential Pulse Compression's effect on muscle blood flow in the lower extremity

Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works. ;ISBN: 1339695766 ;ISBN: 9781339695761

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  • Title:
    Sequential Pulse Compression's effect on muscle blood flow in the lower extremity
  • Author: Brock, Kelly
  • Subjects: Alternative Medicine ; Health sciences ; Physiology
  • Description: Context: Delayed onset muscle soreness (DOMS) affects physically active individuals at all levels and can last for multiple days. These conditions may leave the individual with symptoms of soreness, inflammation, and decreased strength, which can affect his or her performance. One popular approach to reduce the intensity and duration of the symptoms associated with DOMS centers around the use of extremity compression. Common methods by which this is accomplished include massage, compression garments, intermittent pneumatic compression, and most recently, Sequential Pulse Compression (SPC). These treatments aim to increase blood flow to alleviate symptoms. However, to date, no research has examined if SPC alters total blood flow of the treatment area in physically active individuals. Objective: To examine the acute effects of a single treatment of SPC on blood flow compared to a control condition. Design: Single cohort, crossover design. Setting: University research laboratory Patients or Other Participants: Thirty-four participants (females = 12, males = 22; 22 ± 2.9 years; height = 179.20 ± 11.99 cm; mass = 79.70 ± 19.23 kg) who reported exercising a minimum of 200 minutes per week volunteered for this study. Participants reported no current or history (past 12 months) of surgery, lower extremity injury, or cardiovascular, neurologic, or metabolic disease. Interventions: Participants reported to the University research laboratory on two separate occasions. Participants were randomly assigned to receive either the experimental condition or control condition during the first session. Participants’ average power (AP) and total work (TW) were measured via isokinetic dynamometry (Biodex Medical Systems, New York, USA) in knee flexion and extension at the start and end of each session. The experimental condition included the application of SPC boots (NormaTec MVP Pro, MA, USA) for 30-minutes in a resting, supine position at a compression level of 80 mmHg in each cell. The control condition included 30-minutes of quiet lying in a resting, supine position. Baseline measures of total blood flow were collected following a 10-minute rest period and at the conclusion of the 30 minute experimental or control condition. No less than 24 hours after the conclusion of session one, participants returned to the research laboratory to complete the second session. Main Outcome Measures: Relative change in total blood flow between pre- and post-condition measurements as measured by near-infrared spectroscopy at the medial gastrocnemius muscle. Change in AP and TP between pre- and post-condition measurement as measure by the Biodex. Results: We found a significant increase in THb (t33= 2.946, p = 0.00, d = 0.505) and O2Hb (t33= 4.35, p ≤ 0.000, d = 0.745) change between SPC and control condition. We found a non-statistically significant difference in HHb change between SPC and control condition (t 33= -1.989, p = 0.055, d = 0.339). We found no significant differences in TW output in extension (t33= 1.067, p = 0.294) or flexion (t 33= 0.874, p = 0.388) pre- and post-intervention. There were no significant changes in AP output in extension (t33 = 0.677, p = 0.503) or flexion (t33 = -0.035, p = 0.972) pre and post intervention. Conclusions: These data suggest that a 30 minute treatment of SPC increases blood flow in the lower extremity, but does not improve muscle strength. These findings may have implications for the treatment and management of DOMS.
  • Publisher: ProQuest Dissertations Publishing
  • Creation Date: 2016
  • Language: English
  • Identifier: ISBN: 1339695766
    ISBN: 9781339695761
  • Source: AUTh Library subscriptions: ProQuest Central
    ProQuest Central

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