Carolyn A. Richardson

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STUDY DESIGN The contribution of transversus abdominis to spinal stabilization was evaluated indirectly in people with and without low back pain using an experimental model identifying the coordination of trunk muscles in response to a disturbances to the spine produced by arm movement. OBJECTIVES To evaluate the temporal sequence of trunk muscle activity(More)
STUDY DESIGN A clinical study was conducted on 39 patients with acute, first-episode, unilateral low back pain and unilateral, segmental inhibition of the multifidus muscle. Patients were allocated randomly to a control or treatment group. OBJECTIVES To document the natural course of lumber multifidus recovery and to evaluate the effectiveness of(More)
OBJECTIVE To compare trunk muscle coordination in people with and without low back pain with varying speeds of limb movement. STUDY DESIGN Abdominal and back extensor muscle activity in association with upper limb movement was compared among three speeds of movement and between people with and without low back pain. PARTICIPANTS Fourteen subjects with a(More)
STUDY DESIGN A randomized clinical trial with 1-year and 3-year telephone questionnaire follow-ups. OBJECTIVE To report a specific exercise intervention's long-term effects on recurrence rates in acute, first-episode low back pain patients. SUMMARY OF BACKGROUND DATA The pain and disability associated with an initial episode of acute low back pain (LBP)(More)
BACKGROUND AND PURPOSE Activity of the trunk muscles is essential for maintaining stability of the lumbar spine because of the unstable structure of that portion of the spine. A model involving evaluation of the response of the lumbar multifidus and abdominal muscles to leg movement was developed to evaluate this function. SUBJECTS To examine this(More)
STUDY DESIGN A multicenter, randomized controlled trial with unblinded treatment and blinded outcome assessment was conducted. The treatment period was 6 weeks with follow-up assessment after treatment, then at 3, 6, and 12 months. OBJECTIVES To determine the effectiveness of manipulative therapy and a low-load exercise program for cervicogenic headache(More)
A very specific type of exercise has been devised which is proving to provide effective pain relief for chronic and recurrent back pain sufferers. The exercise approach focuses on retraining a precise co-contraction pattern of the deep trunk muscles, the transversus abdominis and lumbar multifidus. The approach is based on the knowledge of how muscles(More)
A clinical test of the function of the deep abdominal muscles was compared to a laboratory electromyographic (EMG) investigation of the contribution of transversus abdominis (TrA) to stability of the lumbar spine during limb movement. The two different functions of TrA were evaluated in 15 subjects. The subject group included six subjects with chronic low(More)
STUDY DESIGN An operator-blinded dual modality trial of measurement of lumbar multifidus muscle cross-sectional area was performed. OBJECTIVE To compare two imaging modalities used for measurement of the lumbar multifidus muscle. METHODS Ten normal female subjects aged 21-31 years were imaged on two separate days using magnetic resonance imaging and(More)
This study aimed to investigate changes in the deep abductor muscles, gluteus medius (GMED), piriformis (PIRI), and gluteus minimus (GMIN), occurring in association with differing stages of unilateral degenerative hip joint pathology (mild: n=6, and advanced: n=6). Muscle volume assessed via magnetic resonance imaging was compared for each muscle between(More)