Transversus abdominis and multifidus asymmetry in runners measured by MRI : a cross-sectional study
Mitchell, U. H., Johnson, A. W., Owen, P. J., Rantalainen, T., & Belavy, D. (2019). Transversus abdominis and multifidus asymmetry in runners measured by MRI : a cross-sectional study. BMJ Open Sport & Exercise Medicine, 5, Article e000556. https://doi.org/10.1136/bmjsem-2019-000556
Julkaistu sarjassa
BMJ Open Sport & Exercise MedicineTekijät
Päivämäärä
2019Tekijänoikeudet
© Author(s) 2019
Objective: The transversus abdominis muscle (TrA) is active during running as a secondary respiratory muscle and acts, together with the multifidus, as trunk stabiliser. The purpose of this study was to determine size and symmetry of TrA and multifidus muscles at rest and with contraction in endurance runners without low back pain.
Design: Cross-sectional study.
Setting: A medical imaging centre in Melbourne, Australia.
Participants: Thirty middle-aged (43years±7) endurance-trained male (n=18) and female (n=12) runners without current or history of low back pain.
Outcome measures: MRI at rest and with the core engaged. The TrA and multifidus muscles were measured for thickness and length (TrA) and anteroposterior and mediolateral thickness (multifidus). Muscle activation was extrapolated from rest to contraction and compared with the same and contralateral side. Paired t-tests were performed to compare sides and contraction status.
Results: Left and right TrA and multifidus demonstrated similar parameters at rest (p>0.05). However, with contraction, the right TrA and multifidus (in mediolateral direction) were 9.2% (p=0.038) and 42% (p<0.001) thicker, respectively, than their counterparts on the left. There was no TrA thickness side difference with contraction in left-handed participants (p=0.985). When stratified by sex, the contracted TrA on the right side remained 8.4% thicker, but it was no longer statistically significant (p=0.134). The side difference with contraction of the TrA became less with increasing training age.
Conclusions Right-handed long-term runners without low back pain exhibit a greater right side core muscle activation when performing an isometric contraction. This activation preference diminishes with increasing training age.
...
Julkaisija
BMJ Publishing Group Ltd.; British Association of Sport and Exercise MedicineISSN Hae Julkaisufoorumista
2055-7647Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/33069336
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Liikuntatieteiden tiedekunta [3164]
Lisätietoja rahoituksesta
This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.Lisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Specific distribution of cross-sectional area in each hamstring muscle of sprint runners and relationship between those and sprint performance
Kamino, K.; Maehama, R.; Kunimasa, Y.; Makino, A.; Sano, K.; Kijima, K.; Komi, Paavo; Ishikawa, M. (Nihon Tairyoku Igakkai, 2018)The purpose of the present study was to examine characteristics of muscle anatomical cross-sectional area (CSA) for different regions from proximal to distal parts of each muscle of the hamstring muscles in high-level ... -
Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots : a 5-year follow-up
Honkanen, Tuomas; Mäntysaari, Matti; Leino, Tuomo; Avela, Janne; Kerttula, Liisa; Haapamäki, Ville; Kyröläinen, Heikki (BioMed Central Ltd., 2019)Background: A small cross sectional area (CSA) of the paraspinal muscles may be related to low back pain among military aviators but previous studies have mainly concentrated on spinal disc degeneration. Therefore, the ... -
Increased Joint Mobility Is Associated With Impaired Transversus Abdominis Contraction
Mitchell, Ulrike H.; Owen, Patrick J.; Rantalainen, Timo; Belavý, Daniel L. (Lippincott Williams & Wilkins, 2022)Increased joint mobility is a risk factor for joint injury, but muscle function may be able to compensate for it. Current evidence suggests reduced force production capacity in people with hypermobility. However, little ... -
Axial loading and posture cues in contraction of transversus abdominis and multifidus with exercise
Owen, Patrick J.; Rantalainen, Timo; Scheuring, Richard A.; Belavy, Daniel L. (Springer Science and Business Media LLC, 2020)Astronauts are at increased risk of spine injury. With a view to developing training approaches for the muscles of the spine in microgravity, this study examined the effects of axial loading and postural cues on the ... -
The importance of level stratification for quantitative MR studies of lumbar intervertebral discs : a cross-sectional analysis in 101 healthy adults
Hebelka, H.; Lagerstrand, K.; Brisby, H.; Owen, P. J.; Quittner, M. J.; Rantalainen, T.; Belavy, D. L. (Springer, 2019)Purpose: To investigate whether quantitative T2-times depend on lumbar intervertebral disc (IVD) level. Methods: The lumbar spine (Th12/L1–L5/S1) of 101 participants (53.5% female, 30.0[± 3.6]years, 173.5[± 9.6]cm and ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.