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Frontal and transverse plane hip kinematics and gluteus maximus recruitment correlate with frontal plane knee kinematics during single-leg squat tests in women.
Clin Biomech (Bristol, Avon). 2014 Apr; 29(4):468-74.CB

Abstract

BACKGROUND

Hip muscle dysfunction may be associated with knee valgus that contributes to problems like patellofemoral pain syndrome. The purpose of this study was to (1) compare knee and hip kinematics and hip muscle strength and recruitment between "good" and "poor" performers on a single-leg squat test developed to assess hip muscle dysfunction and (2) examine relationships between hip muscle strength, recruitment and frontal plane knee kinematics to see which variables correlated with knee valgus during the test.

METHODS

Forty-one active women classified via visual rating as "good" or "poor" performers on the test participated. Participants completed 5-repetition single-leg squat tests. Isometric hip extension and abduction strength, gluteus maximus and gluteus medius recruitment, and 3-dimensional hip and knee kinematics during the test were compared between groups and examined for their association with frontal plane knee motion.

FINDINGS

"Poor" performers completed the test with more hip adduction (mean difference=7.6°) and flexion (mean difference=6.3°) than "good" performers. No differences in knee kinematics, hip strength or hip muscle recruitment occurred. However, the secondary findings indicated that increased medial hip rotation (partial r=0.94) and adduction (partial r=0.42) and decreased gluteus maximus recruitment (partial r=0.35) correlated with increased knee valgus.

INTERPRETATION

Whereas hip muscle function and knee kinematics did not differ between groups as we'd hypothesized, frontal plane knee motion correlated with transverse and frontal plane hip motions and with gluteus maximus recruitment. Gluteus maximus recruitment may modulate frontal plane knee kinematics during single-leg squats.

Authors+Show Affiliations

Program in Physical Therapy, the Department of Physical Medicine & Rehabilitation and Sports Medicine Center, Mayo Clinic, Rochester, MN, USA. Electronic address: hollman.john@mayo.edu.Program in Physical Therapy, the Department of Physical Medicine & Rehabilitation and Sports Medicine Center, Mayo Clinic, Rochester, MN, USA.Program in Physical Therapy, the Department of Physical Medicine & Rehabilitation and Sports Medicine Center, Mayo Clinic, Rochester, MN, USA.Program in Physical Therapy, the Department of Physical Medicine & Rehabilitation and Sports Medicine Center, Mayo Clinic, Rochester, MN, USA.Program in Physical Therapy, the Department of Physical Medicine & Rehabilitation and Sports Medicine Center, Mayo Clinic, Rochester, MN, USA.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

24467971

Citation

Hollman, John H., et al. "Frontal and Transverse Plane Hip Kinematics and Gluteus Maximus Recruitment Correlate With Frontal Plane Knee Kinematics During Single-leg Squat Tests in Women." Clinical Biomechanics (Bristol, Avon), vol. 29, no. 4, 2014, pp. 468-74.
Hollman JH, Galardi CM, Lin IH, et al. Frontal and transverse plane hip kinematics and gluteus maximus recruitment correlate with frontal plane knee kinematics during single-leg squat tests in women. Clin Biomech (Bristol, Avon). 2014;29(4):468-74.
Hollman, J. H., Galardi, C. M., Lin, I. H., Voth, B. C., & Whitmarsh, C. L. (2014). Frontal and transverse plane hip kinematics and gluteus maximus recruitment correlate with frontal plane knee kinematics during single-leg squat tests in women. Clinical Biomechanics (Bristol, Avon), 29(4), 468-74. https://doi.org/10.1016/j.clinbiomech.2013.12.017
Hollman JH, et al. Frontal and Transverse Plane Hip Kinematics and Gluteus Maximus Recruitment Correlate With Frontal Plane Knee Kinematics During Single-leg Squat Tests in Women. Clin Biomech (Bristol, Avon). 2014;29(4):468-74. PubMed PMID: 24467971.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Frontal and transverse plane hip kinematics and gluteus maximus recruitment correlate with frontal plane knee kinematics during single-leg squat tests in women. AU - Hollman,John H, AU - Galardi,Christy M, AU - Lin,I-Hsuan, AU - Voth,Brandon C, AU - Whitmarsh,Crystal L, Y1 - 2014/01/09/ PY - 2013/08/02/received PY - 2013/12/20/revised PY - 2013/12/30/accepted PY - 2014/1/29/entrez PY - 2014/1/29/pubmed PY - 2014/7/25/medline KW - Biomechanics KW - Electromyography KW - Hip KW - Knee KW - Lower extremity KW - Muscle strength SP - 468 EP - 74 JF - Clinical biomechanics (Bristol, Avon) JO - Clin Biomech (Bristol, Avon) VL - 29 IS - 4 N2 - BACKGROUND: Hip muscle dysfunction may be associated with knee valgus that contributes to problems like patellofemoral pain syndrome. The purpose of this study was to (1) compare knee and hip kinematics and hip muscle strength and recruitment between "good" and "poor" performers on a single-leg squat test developed to assess hip muscle dysfunction and (2) examine relationships between hip muscle strength, recruitment and frontal plane knee kinematics to see which variables correlated with knee valgus during the test. METHODS: Forty-one active women classified via visual rating as "good" or "poor" performers on the test participated. Participants completed 5-repetition single-leg squat tests. Isometric hip extension and abduction strength, gluteus maximus and gluteus medius recruitment, and 3-dimensional hip and knee kinematics during the test were compared between groups and examined for their association with frontal plane knee motion. FINDINGS: "Poor" performers completed the test with more hip adduction (mean difference=7.6°) and flexion (mean difference=6.3°) than "good" performers. No differences in knee kinematics, hip strength or hip muscle recruitment occurred. However, the secondary findings indicated that increased medial hip rotation (partial r=0.94) and adduction (partial r=0.42) and decreased gluteus maximus recruitment (partial r=0.35) correlated with increased knee valgus. INTERPRETATION: Whereas hip muscle function and knee kinematics did not differ between groups as we'd hypothesized, frontal plane knee motion correlated with transverse and frontal plane hip motions and with gluteus maximus recruitment. Gluteus maximus recruitment may modulate frontal plane knee kinematics during single-leg squats. SN - 1879-1271 UR - https://www.unboundmedicine.com/medline/citation/24467971/Frontal_and_transverse_plane_hip_kinematics_and_gluteus_maximus_recruitment_correlate_with_frontal_plane_knee_kinematics_during_single_leg_squat_tests_in_women_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0268-0033(14)00002-3 DB - PRIME DP - Unbound Medicine ER -