TY - JOUR
T1 - Trunk muscle activation during movement with a new exercise device for lumbo-pelvic reconditioning
AU - Weber, Tobias
AU - Debuse, Dorothée
AU - Salomoni, Sauro E.
AU - Elgueta Cancino, Edith L.
AU - De Martino, Enrico
AU - Caplan, Nick
AU - Damann, Volker
AU - Scott, Jonathan
AU - Hodges, Paul W.
N1 - Publisher Copyright:
© 2017 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of The Physiological Society and the American Physiological Society.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Gravitational unloading leads to adaptations of the human body, including the spine and its adjacent structures, making it more vulnerable to injury and pain. The Functional Re-adaptive Exercise Device (FRED) has been developed to activate the deep spinal muscles, lumbar multifidus (LM) and transversus abdominis (TrA), that provide inter-segmental control and spinal protection. The FRED provides an unstable base of support and combines weight bearing in up-right posture with side alternating, elliptical leg movements, without any resistance to movement. The present study investigated the activation of LM, TrA, obliquus externus (OE), obliquus internus (OI), abdominis, and erector spinae (ES) during FRED exercise using intramuscular fine-wire and surface EMG. Nine healthy male volunteers (27 ± 5 years) have been recruited for the study. FRED exercise was compared with treadmill walking. It was confirmed that LM and TrA were continually active during FRED exercise. Compared with walking, FRED exercise resulted in similar mean activation of LM and TrA, less activation of OE, OI, ES, and greater variability of lumbo-pelvic muscle activation patterns between individual FRED/gait cycles. These data suggest that FRED continuously engages LM and TrA, and therefore, has the potential as a stationary exercise device to train these muscles.
AB - Gravitational unloading leads to adaptations of the human body, including the spine and its adjacent structures, making it more vulnerable to injury and pain. The Functional Re-adaptive Exercise Device (FRED) has been developed to activate the deep spinal muscles, lumbar multifidus (LM) and transversus abdominis (TrA), that provide inter-segmental control and spinal protection. The FRED provides an unstable base of support and combines weight bearing in up-right posture with side alternating, elliptical leg movements, without any resistance to movement. The present study investigated the activation of LM, TrA, obliquus externus (OE), obliquus internus (OI), abdominis, and erector spinae (ES) during FRED exercise using intramuscular fine-wire and surface EMG. Nine healthy male volunteers (27 ± 5 years) have been recruited for the study. FRED exercise was compared with treadmill walking. It was confirmed that LM and TrA were continually active during FRED exercise. Compared with walking, FRED exercise resulted in similar mean activation of LM and TrA, less activation of OE, OI, ES, and greater variability of lumbo-pelvic muscle activation patterns between individual FRED/gait cycles. These data suggest that FRED continuously engages LM and TrA, and therefore, has the potential as a stationary exercise device to train these muscles.
KW - Deep spinal muscles
KW - exercise device
KW - fine-wire electromyography
KW - lumbar spine
KW - rehabilitation
UR - http://www.scopus.com/inward/record.url?scp=85016300241&partnerID=8YFLogxK
U2 - 10.14814/phy2.13188
DO - 10.14814/phy2.13188
M3 - Article
C2 - 28320889
AN - SCOPUS:85016300241
SN - 2051-817X
VL - 5
JO - Physiological Reports
JF - Physiological Reports
IS - 6
M1 - e13188
ER -