Current Search: bioelectrical impedance (x)
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- Title
- Noninvasive myographical assessments following unaccustomed resistance exercise.
- Creator
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Boone, Carleigh, Fragala, Maren, Hoffman, Jay, Stout, Jeffrey, Fukuda, David, University of Central Florida
- Abstract / Description
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Traditionally, post-exercise muscular alterations have been examined using invasive techniques that lack the ability to single out individual muscle groups. Sonomyography, tensiomyography, and electrical impedance myography allow for noninvasive skeletal muscle assessment. This project aimed to examine changes in muscle contractility and composition that occur in the early stages of recovery following unaccustomed exercise. METHODS: Twenty-one untrained adults (21.9 (&)#177; 1.9 y) performed...
Show moreTraditionally, post-exercise muscular alterations have been examined using invasive techniques that lack the ability to single out individual muscle groups. Sonomyography, tensiomyography, and electrical impedance myography allow for noninvasive skeletal muscle assessment. This project aimed to examine changes in muscle contractility and composition that occur in the early stages of recovery following unaccustomed exercise. METHODS: Twenty-one untrained adults (21.9 (&)#177; 1.9 y) performed exercise (-) 10 (&)#215; 10 maximal eccentric knee extensions (-) with their nondominant leg. For each repetition, participants moved through 90(&)deg; range of motion at 90(&)deg;•s-1 with a passive return to the start position. Each set was separated by 60 seconds of rest. Sonomyography, tensiomyography, electrical impedance myography, and maximal isometric contractions of the knee extensors (RF (&) VL) of both legs were performed before (BL), immediately after (IP), and 24 hours post-exercise (24H). RESULTS: Peak torque and rate of torque development were unaltered in response to the eccentric protocol. Significant limb (&)#215; time interactions were noted for reactance, phase angle, and delay time of the exercised VL, and echo intensity of the exercised RF. Compared to the dominant leg, the nondominant leg displayed significantly greater changes (p (<) 0.05) in VL delay time and RF echo intensity at IP. Following exercise, bilateral alterations were identified for reactance, phase angle, maximal displacement, delay time, contraction velocity, cross-sectional area, and thickness of the RF, as well as resistance, echo intensity, cross-sectional area, and thickness of the VL. No between-sex differences were noted in response to exercise. CONCLUSIONS: In the absence of performance decrements, sonomyography, tensiomyography, and electrical impedance myography successfully detected acute changes in skeletal muscle composition and function following an acute bout of eccentric exercise in untrained men and women. While the exercised leg exhibited specific responses in delay time and echo intensity, bilateral changes are theorized to have occurred due to contralateral stabilization of the non-exercised leg. The current results suggest that different muscle actions (i.e., eccentric and isometric) promote similar consequences to muscle strength, size, echogenicity, contractility, and bioelectrical properties.
Show less - Date Issued
- 2019
- Identifier
- CFE0007432, ucf:52731
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007432
- Title
- TOTAL BODY WATER AND ITS RELATIONSHIP TO FUNCTIONAL PERFORMANCE IN INDIVIDUALS WITH DIAGNOSED OSTEOARTHRITIS.
- Creator
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Hanson, Sara, Valdes, Anna, University of Central Florida
- Abstract / Description
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This study examines a possible relationship between Total Body Water (TBW) levels, osteoarthritic pain and functional performance in a sample of untrained adults. Participants will complete a Western Ontario and McMaster Universities Arthritis Index (WOMAC) questionnaire, TBW will be measured using Single-Frequency Bioelectrical Impedance (SF-BIA) and strength, balance and physical function will be measured by the completion of seven standardized functional tests. Participants in this study...
Show moreThis study examines a possible relationship between Total Body Water (TBW) levels, osteoarthritic pain and functional performance in a sample of untrained adults. Participants will complete a Western Ontario and McMaster Universities Arthritis Index (WOMAC) questionnaire, TBW will be measured using Single-Frequency Bioelectrical Impedance (SF-BIA) and strength, balance and physical function will be measured by the completion of seven standardized functional tests. Participants in this study will include adult men and women, age 35 years and older, who have been previously diagnosed with Osteoarthritis (OA) in the hip or knee, or currently score 35 or higher on the WOMAC. This study aims to determine if TBW values, specifically its intracellular compartment (ICW), will have a relationship to WOMAC scores and if TBW and ICW will have a positive correlation to participants' overall performance on balance, strength, and physical function tests. It is hypothesized that the data will show a negative correlation between ICW and WOMAC scores and a positive correlation between ICW and performance on balance, strength and physical function tests. Little research exists on the relationship between TBW and functional performance in older adults; particularly those whose TBW may be affected by inflammatory conditions such as OA. A goal of this study is to contribute to existing research on the relationship between performance and TBW, while providing insight and data on this relationship in an untrained population.
Show less - Date Issued
- 2015
- Identifier
- CFH0004741, ucf:45363
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004741