Multi-frequency bioimpedance in equine muscle assessment

Harrison, Adrian P.; Elbrønd, Vibeke Sødring; Riis-Olesen, Kiwa; Bartels, Else Marie

doi:10.1088/0967-3334/36/3/453

Cited by 21 publications

(32 citation statements)

References 16 publications

(24 reference statements)

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“…Body bioimpedance is a non-invasive, safe, easy-touse, portable, and low-cost technique to estimate body composition (Lukaski 2013;Collins et al, 2013;Dittmar et al, 2015;Harrison et al, 2015), and seems to be a promising method in poultry production for the evaluation of egg and body composition.…”

Section: Introductionmentioning

confidence: 99%

Bioimpedance as a Non-Invasive Method to Evaluate Eggs and Poultry

Klein

Vale

Silva

et al. 2016

Rev. Bras. Cienc. Avic.

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The need to comply with animal welfare has motivated the research for non-invasive methods that allow the evaluation of poultry and eggs to be painless while providing accurate measurements. In this scenario, bioelectrical impedance was tested as a minimally invasive tool for sexing day-old chicks of two different chicken strains and for evaluating the quality of eggs submitted to different days of storage relative to their hatchability. The resistance and phase angle measured allowed the differentiation between chicken strains, but not between sexes. Eggs stored for seven days showed higher resistance and lower phase angle those stored for only one day. Although the bioimpedance method seems to be a promising method to evaluate egg and chick quality, the results of the present study suggest that further studies are needed to validate its utilization, particularly in terms of electrode type and positioning, as well as for the determination of which electrodes and equipment are best suited for different evaluation purposes.

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Section: Introductionmentioning

confidence: 99%

Bioimpedance as a Non-Invasive Method to Evaluate Eggs and Poultry

Klein

Vale

Silva

et al. 2016

Rev. Bras. Cienc. Avic.

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“…Using this approach, any slight movement artifacts or changes in the resistance and reactance values due to cable movement, change in the stance, body or electrode movement were minimized. For details concerning the mf-BIA recordings see (Harrison et al 2015;Bartels et al 2015).…”

Section: Mf-bia Recordingsmentioning

confidence: 99%

“…Resistance is inversely related to the fluid content, and Xc indicates cell membrane mass, function and interface. BIA therefore enables characterization or classification of relative changes in hydration and cell health/damage in a noninvasive fashion (Nescolarde et al 2013;Harrison et al 2015;Bartels et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…fc provides important information regarding the relative density of muscle tissue e.g. more or less contracted at rest (Harrison et al 2015;Bartels et al 2015). This arises since a contracted, and relatively more dense muscle requires a higher frequency to attain the maximal Xc value.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, values for membrane capacitance (Mc) are achievable, thus an indication of the cell transport activity of a muscle can also be obtained. Furthermore, newer BIA units also allow for a more precise measurement of the extracellular resistance (Re) and the intracellular resistance (Ri), allowing an assessment of localized swelling, dehydration and muscle damage (Harrison et al 2015;Bartels et al 2015). Indeed, recently it was shown that a very high correlation (r = 0.89) exists between Ri and VO 2max in a cohort of 115 individuals (Stahn et al 2008).…”

Section: Introductionmentioning

confidence: 99%

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Multi-frequency bioimpedance and myofascial release therapy: An equine “AtlasOrange1” validation study

Harrison

Elbrønd²,

Krasnodebska³

2015

MRAJ

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Background: Measurable sources of muscle tension include viscoelastic tone, physiological contracture, voluntary contraction, and muscle spasm, and if left untreated, they can over a period of time result in clinical pain as a direct result of increased myofascia tension. Typically, physiotherapy is used to stretch affected muscles, thereby reducing motor neuron excitability, and as a consequence give the patient a sensation of correct posture and movement, thereby facilitating normal movement patterns. However, cases of documented therapy effectiveness are rare.Methods: A total of 6 horses with myofascial tension/imbalance issues were selected for this trial. The horses were assessed manually by a qualified Veterinarian and note was taken of regions with high resting myofascial tension as well as movement restrictions. The horses were then measured using a multi-frequency BioImpedance Analysis unit (SFB7) by a technician blinded to the manual assessment. AtlasOrange1, a new form of mechanical physiotherapy massage was used to treat all 6 horses. Treatment was applied directly to two anatomically identifiable myo-fascial regions for a total period of two minutes. Subsequently, the effects of treatment were followed using multi-frequency bioimpedance at an interval of 1, 24 and 48 hours.Results: Regions of increased myofascial tonus/stiffness were detected manually and noted for all 6 horses. The bioimpedance data was analyzed for centre frequency (fc) and extracellular resistance (Re) and delta values between the right-and left-hand sides of each horse were calculated. Treatment induced a 39% decrease for Re (NS) and a 58% decrease for fc (P=0.003) over 48 hours post-treatment. The mfBIA values were subsequently compared with the findings of the manual evaluation revealing a 94.4% overall agreement.Conclusion: We suggest that a high level of resting myofascial tension/stiffness is measureable using mf-BIA, and that it can be relieved with massage forms of treatment like AtlasOrange1. (299 of 300 words)

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