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Improvements in kinematics, muscle activity and pain during functional tasks in females with patellofemoral pain following a single patterned electrical stimulation treatment.

Abstract

BACKGROUND

Individuals with patellofemoral pain present with altered hip muscle activation, faulty movement patterns, and pain during functional tasks. Examining new treatment options to address these impairments may better treat those with patellofemoral pain. The purpose of this study was to determine if patterned electrical stimulation to the lower extremity affects muscle activity, movement patterns, and pain following a single treatment.

METHODS

Fifteen females with patellofemoral pain were randomized to receive a single 15-minute treatment of either a patterned electrical neuromuscular stimulation or a sham. Peak kinematics of the knee, hip, and trunk, electromyography and pain were examined pre and post-intervention during a single leg squat and lateral step-down task. Group means and pre/post reduced kinematic values were also plotted during the entire task with 90% confidence intervals to identify differences in movement strategies.

FINDINGS

No baseline differences were found in peak kinematics between groups. No pre to post-intervention differences in peak knee, hip and trunk kinematics were found, however differences were seen when the quality of movement across the entire tasks was assessed. The electrical stimulation group had improved knee flexion and hip abduction during the lateral step-down. A significant improvement in gluteus medius activation following patterned electrical neuromuscular stimulation occurred during the step-down (P=0.039). Significant pain improvements were also seen in both the single leg squat (P=0.025) and lateral step-down (P=0.006).

INTERPRETATION

A single treatment of patterned electrical neuromuscular stimulation improved muscle activation, lower extremity kinematics during functional tasks, and pain.

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  • Authors+Show Affiliations

    ,

    Department of Kinesiology, Exercise and Sport Injury Laboratory, University of Virginia, Charlottesville, VA, USA. Electronic address: ng2w@virginia.edu.

    ,

    Department of Kinesiology, Exercise and Sport Injury Laboratory, University of Virginia, Charlottesville, VA, USA.

    ,

    Department of Kinesiology, Exercise and Sport Injury Laboratory, University of Virginia, Charlottesville, VA, USA.

    ,

    Department of Kinesiology, Exercise and Sport Injury Laboratory, University of Virginia, Charlottesville, VA, USA; Department of Orthopedic Surgery, University of Virginia, Charlottesville, VA, USA.

    Department of Kinesiology, Exercise and Sport Injury Laboratory, University of Virginia, Charlottesville, VA, USA.

    Source

    MeSH

    Adult
    Biomechanical Phenomena
    Electric Stimulation Therapy
    Electromyography
    Female
    Hip
    Hip Joint
    Humans
    Knee
    Knee Joint
    Leg
    Movement
    Muscle, Skeletal
    Pain
    Patellofemoral Pain Syndrome
    Thigh
    Torso

    Pub Type(s)

    Journal Article
    Randomized Controlled Trial

    Language

    eng

    PubMed ID

    26775230

    Citation

    Glaviano, Neal R., et al. "Improvements in Kinematics, Muscle Activity and Pain During Functional Tasks in Females With Patellofemoral Pain Following a Single Patterned Electrical Stimulation Treatment." Clinical Biomechanics (Bristol, Avon), vol. 32, 2016, pp. 20-7.
    Glaviano NR, Huntsman S, Dembeck A, et al. Improvements in kinematics, muscle activity and pain during functional tasks in females with patellofemoral pain following a single patterned electrical stimulation treatment. Clin Biomech (Bristol, Avon). 2016;32:20-7.
    Glaviano, N. R., Huntsman, S., Dembeck, A., Hart, J. M., & Saliba, S. (2016). Improvements in kinematics, muscle activity and pain during functional tasks in females with patellofemoral pain following a single patterned electrical stimulation treatment. Clinical Biomechanics (Bristol, Avon), 32, pp. 20-7. doi:10.1016/j.clinbiomech.2015.12.007.
    Glaviano NR, et al. Improvements in Kinematics, Muscle Activity and Pain During Functional Tasks in Females With Patellofemoral Pain Following a Single Patterned Electrical Stimulation Treatment. Clin Biomech (Bristol, Avon). 2016;32:20-7. PubMed PMID: 26775230.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Improvements in kinematics, muscle activity and pain during functional tasks in females with patellofemoral pain following a single patterned electrical stimulation treatment. AU - Glaviano,Neal R, AU - Huntsman,Stephanie, AU - Dembeck,Ashley, AU - Hart,Joseph M, AU - Saliba,Susan, Y1 - 2015/12/30/ PY - 2015/08/18/received PY - 2015/12/20/revised PY - 2015/12/21/accepted PY - 2016/1/18/entrez PY - 2016/1/18/pubmed PY - 2016/11/1/medline KW - Anterior knee pain KW - Biomechanics KW - Electrical stimulation KW - Hip SP - 20 EP - 7 JF - Clinical biomechanics (Bristol, Avon) JO - Clin Biomech (Bristol, Avon) VL - 32 N2 - BACKGROUND: Individuals with patellofemoral pain present with altered hip muscle activation, faulty movement patterns, and pain during functional tasks. Examining new treatment options to address these impairments may better treat those with patellofemoral pain. The purpose of this study was to determine if patterned electrical stimulation to the lower extremity affects muscle activity, movement patterns, and pain following a single treatment. METHODS: Fifteen females with patellofemoral pain were randomized to receive a single 15-minute treatment of either a patterned electrical neuromuscular stimulation or a sham. Peak kinematics of the knee, hip, and trunk, electromyography and pain were examined pre and post-intervention during a single leg squat and lateral step-down task. Group means and pre/post reduced kinematic values were also plotted during the entire task with 90% confidence intervals to identify differences in movement strategies. FINDINGS: No baseline differences were found in peak kinematics between groups. No pre to post-intervention differences in peak knee, hip and trunk kinematics were found, however differences were seen when the quality of movement across the entire tasks was assessed. The electrical stimulation group had improved knee flexion and hip abduction during the lateral step-down. A significant improvement in gluteus medius activation following patterned electrical neuromuscular stimulation occurred during the step-down (P=0.039). Significant pain improvements were also seen in both the single leg squat (P=0.025) and lateral step-down (P=0.006). INTERPRETATION: A single treatment of patterned electrical neuromuscular stimulation improved muscle activation, lower extremity kinematics during functional tasks, and pain. SN - 1879-1271 UR - https://www.unboundmedicine.com/medline/citation/26775230/Improvements_in_kinematics_muscle_activity_and_pain_during_functional_tasks_in_females_with_patellofemoral_pain_following_a_single_patterned_electrical_stimulation_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0268-0033(15)00331-9 DB - PRIME DP - Unbound Medicine ER -