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Deep and superficial abdominal muscle activation during trunk stabilization exercises with and without instruction to hollow.
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- Bjerkefors, Anna (author)
- Gymnastik- och idrottshögskolan,Laboratoriet för biomekanik och motorisk kontroll (BMC)
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- Nordlund Ekblom, Maria M (author)
- Karolinska Institutet,Gymnastik- och idrottshögskolan,Laboratoriet för biomekanik och motorisk kontroll (BMC)
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- Josefsson, Karin (author)
- Gymnastik- och idrottshögskolan,Laboratoriet för biomekanik och motorisk kontroll (BMC)
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- Elsevier BV, 2010
- 2010
- English.
- In: Manual Therapy. - : Elsevier BV. - 1356-689X .- 1532-2769. ; 15:5, s. 502-7
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The deepest muscle of the human ventro-lateral abdominal wall, the Transversus Abdominis (TrA), has been ascribed a specific role in spine stabilization, which has motivated special core stability exercises and hollowing instruction to specifically involve this muscle. The purpose here was to evaluate the levels of activation of the TrA and the superficial Rectus Abdominis (RA) muscles during five common stabilization exercises performed in supine, bridging and four-point kneeling positions, with and without instruction to hollow, i.e. to continuously pull the lower part of the abdomen towards the spine. Nine habitually active women participated and muscle activity was recorded bilaterally from TrA and RA with intramuscular fine-wire electrodes introduced under the guidance of ultrasound. Results showed that subjects were able to selectively increase the activation of the TrA, isolated from the RA, with the specific instruction to hollow and that side differences in the amplitude of TrA activity, related to the asymmetry of the exercises, remained even after the instruction to hollow. The exercises investigated caused levels of TrA activation from 4 to 43% of that during maximal effort and can thus be used clinically to grade the load on the TrA when designing programs aiming at training that muscle.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Keyword
- Physiology
- Fysiologi
- Medicin/Teknik
- Medicine/Technology
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Manual Therapy
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- The Swedish School of Sport and Health Sciences
- Karolinska Institutet
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