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Is there a low-back cost to hip-centric exercise? Quantifying the lumbar spine joint compression and shear forces during movements used to overload the hips.
J Sports Sci. 2012 May; 30(9):859-70.JS

Abstract

The aim of this study was to quantify joint compression and shear forces at L4/L5 during exercises used to overload the hips. Nine men performed 36 "walking" trials using two modalities: (1) sled towing and (2) exercise bands placed around the ankles. Participants completed forward, backward, and lateral trials with bent and straight legs at three separate loads. Surface electromyography (EMG) was recorded bilaterally from eight torso and thigh sites, upper body and lumbar spine motion were quantified, and hand forces were measured. An EMG-driven musculoskeletal model was used to estimate the muscular contribution to joint compression and shear. Peak reaction, muscle and joint compression and shear forces, and peak gluteus medius and maximus activity were calculated. Significant differences were noted in each dependent measure; however, they were dependent on direction of travel, leg position, and load. The highest joint compression and shear forces for the sled and band conditions were 4378 N and 626 N, and 3306 N and 713 N, respectively. In general, increasing the band tension had little effect on all dependent measures, although a load-response was found during the sled conditions. Before using any exercise to improve hip function, the potential benefits should be weighed against "costs" to neighbouring joints.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Frost DM
Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada. d3frost@uwaterloo.ca
Beach T
No affiliation info available
Fenwick C
No affiliation info available
Callaghan J
No affiliation info available
McGill S
No affiliation info available

MeSH

AdultElectromyographyHipHip JointHumansJointsLower ExtremityLumbar VertebraeLumbosacral RegionMaleMuscle ContractionMuscle, SkeletalSpineStress, MechanicalWalkingWeight-BearingYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22468799

Citation

Frost, David M., et al. "Is There a Low-back Cost to Hip-centric Exercise? Quantifying the Lumbar Spine Joint Compression and Shear Forces During Movements Used to Overload the Hips." Journal of Sports Sciences, vol. 30, no. 9, 2012, pp. 859-70.
Frost DM, Beach T, Fenwick C, et al. Is there a low-back cost to hip-centric exercise? Quantifying the lumbar spine joint compression and shear forces during movements used to overload the hips. J Sports Sci. 2012;30(9):859-70.
Frost, D. M., Beach, T., Fenwick, C., Callaghan, J., & McGill, S. (2012). Is there a low-back cost to hip-centric exercise? Quantifying the lumbar spine joint compression and shear forces during movements used to overload the hips. Journal of Sports Sciences, 30(9), 859-70. https://doi.org/10.1080/02640414.2012.671532
Frost DM, et al. Is There a Low-back Cost to Hip-centric Exercise? Quantifying the Lumbar Spine Joint Compression and Shear Forces During Movements Used to Overload the Hips. J Sports Sci. 2012;30(9):859-70. PubMed PMID: 22468799.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Is there a low-back cost to hip-centric exercise? Quantifying the lumbar spine joint compression and shear forces during movements used to overload the hips. AU - Frost,David M, AU - Beach,Tyson, AU - Fenwick,Chad, AU - Callaghan,Jack, AU - McGill,Stuart, Y1 - 2012/04/03/ PY - 2012/4/4/entrez PY - 2012/4/4/pubmed PY - 2012/9/1/medline SP - 859 EP - 70 JF - Journal of sports sciences JO - J Sports Sci VL - 30 IS - 9 N2 - The aim of this study was to quantify joint compression and shear forces at L4/L5 during exercises used to overload the hips. Nine men performed 36 "walking" trials using two modalities: (1) sled towing and (2) exercise bands placed around the ankles. Participants completed forward, backward, and lateral trials with bent and straight legs at three separate loads. Surface electromyography (EMG) was recorded bilaterally from eight torso and thigh sites, upper body and lumbar spine motion were quantified, and hand forces were measured. An EMG-driven musculoskeletal model was used to estimate the muscular contribution to joint compression and shear. Peak reaction, muscle and joint compression and shear forces, and peak gluteus medius and maximus activity were calculated. Significant differences were noted in each dependent measure; however, they were dependent on direction of travel, leg position, and load. The highest joint compression and shear forces for the sled and band conditions were 4378 N and 626 N, and 3306 N and 713 N, respectively. In general, increasing the band tension had little effect on all dependent measures, although a load-response was found during the sled conditions. Before using any exercise to improve hip function, the potential benefits should be weighed against "costs" to neighbouring joints. SN - 1466-447X UR - https://www.unboundmedicine.com/medline/citation/22468799/Is_there_a_low_back_cost_to_hip_centric_exercise_Quantifying_the_lumbar_spine_joint_compression_and_shear_forces_during_movements_used_to_overload_the_hips_ DB - PRIME DP - Unbound Medicine ER -