Lower-Extremity Muscle Activity, Kinematics, and Dynamic Postural Control in Individuals With Patellofemoral Pain / Shiho Goto, Naoko Aminaka, and Phillip A. Gribble
Material type:
Continuing resourceISSN: 1543-3072Subject(s): adductor longus | electromyography | gluteus maximus | gluteus medius | star excursion balance test | vastus medialis
In:
Journal of Sport Rehabilitation -- 2018, v 27, p. 505-512Summary: Context: Altered lower-extremity muscle activity has been associated with lower-extremity kinematics in individuals with
patellofemoral pain (PFP). However, few studies have examined these relationships, and the results are inconsistent. Objective:
To compare the lower-extremity muscle activity, kinematics, pain level, and reach distance during the anterior reach of the star
excursion balance test (SEBT) between participants with PFP and healthy individuals (control [CON] group). Design: Case
control. Setting: Research laboratory. Participants: Twenty-eight (PFP = 14 and CON = 14) participants volunteered. Intervention: Each participant performed 3 maximal voluntary isometric contractions of the gluteus maximus, gluteus medius
(GMED), adductor longus (AL), and vastus medialis, and 5 anterior reaches of the SEBT. Main Outcome Measures: Threedimensional joint kinematics of the hip and knee at the time of touchdown of the SEBT and integrated electromyography of each
muscle were recorded during the descent phase of the SEBT. Coactivation ratios between the GMED and AL were calculated
(GMED/AL). Pain level was assessed at the baseline and during performance of the SEBT, using a visual analog scale. Results:
Participants with PFP demonstrated decreased GMED/AL coactivation ratio (P = .01) and shorter reach distance (P = .01) during
anterior reach of the SEBT compared with the CON group. Participants with PFP demonstrated higher pain levels at baseline
(P = .03) and during test performance (P < .001) compared with the CON group and increased pain level during the test
performance compared with the baseline (P < .001). No other significant differences were observed. Conclusions: There were
alterations in muscle activity during SEBT performance, suggesting that overactivity of AL relative to GMED is a unique neural
recruitment pattern in those with PFP. However, hip and knee joint kinematics did not seem to contribute to deficits in the anterior
reach distance, suggesting a need for continued assessment of these deficiencies.
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Artículo de revista
|
Revistas y artículos | Non-fiction | PP (Browse shelf(Opens below)) | Available | 5600 |
PDF en biblioteca
Bibliografía: p. 511-512
Context: Altered lower-extremity muscle activity has been associated with lower-extremity kinematics in individuals with
patellofemoral pain (PFP). However, few studies have examined these relationships, and the results are inconsistent. Objective:
To compare the lower-extremity muscle activity, kinematics, pain level, and reach distance during the anterior reach of the star
excursion balance test (SEBT) between participants with PFP and healthy individuals (control [CON] group). Design: Case
control. Setting: Research laboratory. Participants: Twenty-eight (PFP = 14 and CON = 14) participants volunteered. Intervention: Each participant performed 3 maximal voluntary isometric contractions of the gluteus maximus, gluteus medius
(GMED), adductor longus (AL), and vastus medialis, and 5 anterior reaches of the SEBT. Main Outcome Measures: Threedimensional joint kinematics of the hip and knee at the time of touchdown of the SEBT and integrated electromyography of each
muscle were recorded during the descent phase of the SEBT. Coactivation ratios between the GMED and AL were calculated
(GMED/AL). Pain level was assessed at the baseline and during performance of the SEBT, using a visual analog scale. Results:
Participants with PFP demonstrated decreased GMED/AL coactivation ratio (P = .01) and shorter reach distance (P = .01) during
anterior reach of the SEBT compared with the CON group. Participants with PFP demonstrated higher pain levels at baseline
(P = .03) and during test performance (P < .001) compared with the CON group and increased pain level during the test
performance compared with the baseline (P < .001). No other significant differences were observed. Conclusions: There were
alterations in muscle activity during SEBT performance, suggesting that overactivity of AL relative to GMED is a unique neural
recruitment pattern in those with PFP. However, hip and knee joint kinematics did not seem to contribute to deficits in the anterior
reach distance, suggesting a need for continued assessment of these deficiencies.
There are no comments on this title.