TY - JOUR
T1 - Manual therapy directed at the knee or lumbopelvic region does not influence quadriceps spinal reflex excitability
AU - Grindstaff, Terry L.
AU - Pietrosimone, Brian G.
AU - Sauer, Lindsay D.
AU - Kerrigan, D. Casey
AU - Patrie, James T.
AU - Hertel, Jay
AU - Ingersoll, Christopher D.
N1 - Funding Information:
We would like to thank James R. Beazell, DPT, ATC, FAAOMPT for his manual therapy expertise and assistance with the interventions. This study was supported by grant 5R21AT004171-02 (PI: Ingersoll) from the National Center for Complementary and Alternative Medicine .
PY - 2014/8
Y1 - 2014/8
N2 - Manual therapies, directed to the knee and lumbopelvic region, have demonstrated the ability to improve neuromuscular quadriceps function in individuals with knee pathology. It remains unknown if manual therapies may alter impaired spinal reflex excitability, thus identifying a potential mechanism in which manual therapy may improve neuromuscular function following knee injury. Aim: To determine the effect of local and distant mobilisation/manipulation interventions on quadriceps spinal reflex excitability. Methods: Seventy-five individuals with a history of knee joint injury and current quadriceps inhibition volunteered for this study. Participants were randomised to one of five intervention groups: lumbopelvic manipulation (grade V), lumbopelvic manipulation positioning (no thrust), grade IV patellar mobilisation, grade I patellar mobilisation, and control (no treatment). Changes in spinal reflex excitability were quantified by assessing the Hoffmann reflex (H-reflex), presynaptic, and postsynaptic excitability. A hierarchical linear-mixed model for repeated measures was performed to compare changes in outcome variables between groups over time (pre, post 0, 30, 60, 90min). Results: There were no significant differences in H-reflex, presynaptic, or postsynaptic excitability between groups across time. Conclusions: Manual therapies directed to the knee or lumbopelvic region did not acutely change quadriceps spinal reflex excitability. Although manual therapies may improve impairments and functional outcomes the underlying mechanism does not appear to be related to changes in spinal reflex excitability.
AB - Manual therapies, directed to the knee and lumbopelvic region, have demonstrated the ability to improve neuromuscular quadriceps function in individuals with knee pathology. It remains unknown if manual therapies may alter impaired spinal reflex excitability, thus identifying a potential mechanism in which manual therapy may improve neuromuscular function following knee injury. Aim: To determine the effect of local and distant mobilisation/manipulation interventions on quadriceps spinal reflex excitability. Methods: Seventy-five individuals with a history of knee joint injury and current quadriceps inhibition volunteered for this study. Participants were randomised to one of five intervention groups: lumbopelvic manipulation (grade V), lumbopelvic manipulation positioning (no thrust), grade IV patellar mobilisation, grade I patellar mobilisation, and control (no treatment). Changes in spinal reflex excitability were quantified by assessing the Hoffmann reflex (H-reflex), presynaptic, and postsynaptic excitability. A hierarchical linear-mixed model for repeated measures was performed to compare changes in outcome variables between groups over time (pre, post 0, 30, 60, 90min). Results: There were no significant differences in H-reflex, presynaptic, or postsynaptic excitability between groups across time. Conclusions: Manual therapies directed to the knee or lumbopelvic region did not acutely change quadriceps spinal reflex excitability. Although manual therapies may improve impairments and functional outcomes the underlying mechanism does not appear to be related to changes in spinal reflex excitability.
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U2 - 10.1016/j.math.2014.03.010
DO - 10.1016/j.math.2014.03.010
M3 - Article
C2 - 24793076
AN - SCOPUS:84902117879
VL - 19
SP - 299
EP - 305
JO - Musculoskeletal Science and Practice
JF - Musculoskeletal Science and Practice
SN - 2468-8630
IS - 4
ER -