TY - JOUR
T1 - Lumbar intervertebral kinematics during an unstable sitting task and its association with standing-induced low back pain
AU - Viggiani, Daniel
AU - Mannen, Erin M.
AU - Nelson-Wong, Erika
AU - Wong, Alexander
AU - Ghiselli, Gary
AU - Shelburne, Kevin B.
AU - Davidson, Bradley S.
AU - Callaghan, Jack P.
N1 - Publisher Copyright:
© 2020 Human Kinetics, Inc.
PY - 2020/12
Y1 - 2020/12
N2 - People developing transient low back pain during standing have altered control of their spine and hips during standing tasks, but the transfer of these responses to other tasks has not been assessed. This study used video fluoroscopy to assess lumbar spine intervertebral kinematics of people who do and do not develop standing-induced low back pain during a seated chair-tilting task. A total of 9 females and 8 males were categorized as pain developers (5 females and 3 males) or nonpain developers (4 females and 5 males) using a 2-hour standing exposure; pain developers reported transient low back pain and nonpain developers did not. Participants were imaged with sagittal plane fluoroscopy at 25 Hz while cyclically tilting their pelvises anteriorly and posteriorly on an unstable chair. Intervertebral angles, relative contributions, and anterior-posterior translations were measured for the L3/L4, L4/L5, and L5/S1 joints and compared between sexes, pain groups, joints, and tilting directions. Female pain developers experienced more extension in their L5/S1 joints in both tilting directions compared with female nonpain developers, a finding not present in males. The specificity in intervertebral kinematics to sex-pain group combinations suggests that these subgroups of pain developers and nonpain developers may implement different control strategies.
AB - People developing transient low back pain during standing have altered control of their spine and hips during standing tasks, but the transfer of these responses to other tasks has not been assessed. This study used video fluoroscopy to assess lumbar spine intervertebral kinematics of people who do and do not develop standing-induced low back pain during a seated chair-tilting task. A total of 9 females and 8 males were categorized as pain developers (5 females and 3 males) or nonpain developers (4 females and 5 males) using a 2-hour standing exposure; pain developers reported transient low back pain and nonpain developers did not. Participants were imaged with sagittal plane fluoroscopy at 25 Hz while cyclically tilting their pelvises anteriorly and posteriorly on an unstable chair. Intervertebral angles, relative contributions, and anterior-posterior translations were measured for the L3/L4, L4/L5, and L5/S1 joints and compared between sexes, pain groups, joints, and tilting directions. Female pain developers experienced more extension in their L5/S1 joints in both tilting directions compared with female nonpain developers, a finding not present in males. The specificity in intervertebral kinematics to sex-pain group combinations suggests that these subgroups of pain developers and nonpain developers may implement different control strategies.
KW - Motor control
KW - Spine
KW - Video fluoroscopy
UR - http://www.scopus.com/inward/record.url?scp=85097481148&partnerID=8YFLogxK
U2 - 10.1123/JAB.2019-0382
DO - 10.1123/JAB.2019-0382
M3 - Article
C2 - 32971516
AN - SCOPUS:85097481148
SN - 1065-8483
VL - 36
SP - 423
EP - 435
JO - Journal of Applied Biomechanics
JF - Journal of Applied Biomechanics
IS - 6
ER -