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Full-Text Articles in Medicine and Health Sciences
Individuals With Recurrent Low Back Pain Exhibit Significant Changes In Paraspinal Muscle Strength After Intramuscular Fine Wire Electrode Insertion, Szu-Ping Lee, Vincent Dinglasan, Anthony Duong, Russell Totten, Jo Armour Smith
Individuals With Recurrent Low Back Pain Exhibit Significant Changes In Paraspinal Muscle Strength After Intramuscular Fine Wire Electrode Insertion, Szu-Ping Lee, Vincent Dinglasan, Anthony Duong, Russell Totten, Jo Armour Smith
Physical Therapy Faculty Articles and Research
Objective
To examine how insertion and presence of intramuscular fine‐wire electromyography electrodes (IFWE) in lumbar multifidus affect paraspinal muscle strength, endurance, and activation in persons with and without recurrent lower back pain (RLBP) during activities that require high levels of muscle contraction.
Design
Case‐control with randomization of conditions.
Setting
Clinical Research Laboratory.
Participants
Forty participants age 18‐40 were recruited (18 female; mean age = 25.5 yr); 20 with a history of RLBP were compared to a matching control group of 20 without RLBP.
Interventions
Each participant was tested under three conditions over three sessions. On Session 1, the baseline condition, …
Insertion And Presence Of Fine-Wire Intramuscular Electrodes To The Lumbar Paraspinal Muscles Do Not Affect Muscle Performance And Activation During Highexertion Spinal Extension Activities, Szu-Ping Lee, Jo Armour Smith, Matthew Kimber, Kelsey Houk
Insertion And Presence Of Fine-Wire Intramuscular Electrodes To The Lumbar Paraspinal Muscles Do Not Affect Muscle Performance And Activation During Highexertion Spinal Extension Activities, Szu-Ping Lee, Jo Armour Smith, Matthew Kimber, Kelsey Houk
Physical Therapy Faculty Articles and Research
Background
Low back pain (LBP) is commonly associated with paraspinal muscle dysfunctions. A method to study deep lumbar paraspinal (i.e. multifidus) muscle function and neuromuscular activation pattern is intramuscular electromyography (EMG). Previous studies have shown that the procedure does not significantly impact muscle function during activities involving low-level muscle contractions. However, it is currently unknown how muscular function and activation are affected during high-exertion contractions.
Objective
To examine the effects of insertion and presence of fine-wire EMG electrodes in the lumbar multifidus on muscle strength, endurance, and activation profiles during high-exertion spinal extension muscle contractions.
Design
Single-blinded, repeated measures intervention …