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Measures of range of motion and strength among healthy women with differing quality of lower extremity movement during the lateral step-down test.
J Orthop Sports Phys Ther. 2010 Dec; 40(12):792-800.JO

Abstract

STUDY DESIGN

Cross-sectional.

OBJECTIVE

To determine the association between hip and ankle range-of-motion measures, as well as measures of hip muscle strength, with measures of quality of lower extremity movement, as assessed visually during the lateral step-down test in healthy women.

BACKGROUND

Altered lower extremity movement pattern consisting of excessive femoral adduction and internal rotation, leading to excessive knee valgus alignment, is associated with increased risk of knee ligament injury, as well as patellofemoral pain syndrome. Previous investigations of lower extremity kinematics, using 3-dimensional motion analysis systems, document an inconsistent association between hip muscle strength and lower extremity movement pattern. Currently, it is unknown whether differences in hip muscle strength or other physical measures exist among women with differing quality of lower extremity movement as assessed by visual observation.

METHODS

Two physical therapists assessed the quality of movement during the lateral step-down among 29 healthy women (mean ± SD age, 24.3 ± 3.2 years). Subjects were instructed on the optimal movement pattern prior to performing the test. The quality of movement was categorized as "good" or "moderate," based on a previously established 6-point scale. Several measures of hip strength (handheld dynamometer) and hip and ankle range of motion (fluid-filled inclinometer and universal goniometer) were also assessed. Differences in strength and range-of-motion measures between women with good and women with moderate quality of movement were assessed with a Mann-Whitney U test.

RESULTS

Both examiners found decreased ankle dorsiflexion range of motion, as measured with the knee bent (P<.05 and P<.01 for examiner 1 and 2, respectively) and in weight bearing (P<.001 and P<.01 for examiner 1 and 2, respectively) among women with a moderate quality of movement compared to women with a good quality of movement on the lateral step-down test.

CONCLUSION

Following receipt of instructions on optimal lower extremity movement pattern, women who demonstrate a moderate quality of movement, as assessed visually during the lateral step-down test, exhibit decreased ankle dorsiflexion range of motion compared to women with a good quality of movement. Clinicians should consider evaluating ankle dorsiflexion range of motion when observing an altered lower extremity movement pattern during the lateral step-down test.

Authors+Show Affiliations

Department of Physiotherapy, Ariel University Center, Israel. alonrabin@aol.comNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20972344

Citation

Rabin, Alon, and Zvi Kozol. "Measures of Range of Motion and Strength Among Healthy Women With Differing Quality of Lower Extremity Movement During the Lateral Step-down Test." The Journal of Orthopaedic and Sports Physical Therapy, vol. 40, no. 12, 2010, pp. 792-800.
Rabin A, Kozol Z. Measures of range of motion and strength among healthy women with differing quality of lower extremity movement during the lateral step-down test. J Orthop Sports Phys Ther. 2010;40(12):792-800.
Rabin, A., & Kozol, Z. (2010). Measures of range of motion and strength among healthy women with differing quality of lower extremity movement during the lateral step-down test. The Journal of Orthopaedic and Sports Physical Therapy, 40(12), 792-800. https://doi.org/10.2519/jospt.2010.3424
Rabin A, Kozol Z. Measures of Range of Motion and Strength Among Healthy Women With Differing Quality of Lower Extremity Movement During the Lateral Step-down Test. J Orthop Sports Phys Ther. 2010;40(12):792-800. PubMed PMID: 20972344.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Measures of range of motion and strength among healthy women with differing quality of lower extremity movement during the lateral step-down test. AU - Rabin,Alon, AU - Kozol,Zvi, Y1 - 2010/10/22/ PY - 2010/10/26/entrez PY - 2010/10/26/pubmed PY - 2011/2/25/medline SP - 792 EP - 800 JF - The Journal of orthopaedic and sports physical therapy JO - J Orthop Sports Phys Ther VL - 40 IS - 12 N2 - STUDY DESIGN: Cross-sectional. OBJECTIVE: To determine the association between hip and ankle range-of-motion measures, as well as measures of hip muscle strength, with measures of quality of lower extremity movement, as assessed visually during the lateral step-down test in healthy women. BACKGROUND: Altered lower extremity movement pattern consisting of excessive femoral adduction and internal rotation, leading to excessive knee valgus alignment, is associated with increased risk of knee ligament injury, as well as patellofemoral pain syndrome. Previous investigations of lower extremity kinematics, using 3-dimensional motion analysis systems, document an inconsistent association between hip muscle strength and lower extremity movement pattern. Currently, it is unknown whether differences in hip muscle strength or other physical measures exist among women with differing quality of lower extremity movement as assessed by visual observation. METHODS: Two physical therapists assessed the quality of movement during the lateral step-down among 29 healthy women (mean ± SD age, 24.3 ± 3.2 years). Subjects were instructed on the optimal movement pattern prior to performing the test. The quality of movement was categorized as "good" or "moderate," based on a previously established 6-point scale. Several measures of hip strength (handheld dynamometer) and hip and ankle range of motion (fluid-filled inclinometer and universal goniometer) were also assessed. Differences in strength and range-of-motion measures between women with good and women with moderate quality of movement were assessed with a Mann-Whitney U test. RESULTS: Both examiners found decreased ankle dorsiflexion range of motion, as measured with the knee bent (P<.05 and P<.01 for examiner 1 and 2, respectively) and in weight bearing (P<.001 and P<.01 for examiner 1 and 2, respectively) among women with a moderate quality of movement compared to women with a good quality of movement on the lateral step-down test. CONCLUSION: Following receipt of instructions on optimal lower extremity movement pattern, women who demonstrate a moderate quality of movement, as assessed visually during the lateral step-down test, exhibit decreased ankle dorsiflexion range of motion compared to women with a good quality of movement. Clinicians should consider evaluating ankle dorsiflexion range of motion when observing an altered lower extremity movement pattern during the lateral step-down test. SN - 0190-6011 UR - https://www.unboundmedicine.com/medline/citation/20972344/Measures_of_range_of_motion_and_strength_among_healthy_women_with_differing_quality_of_lower_extremity_movement_during_the_lateral_step_down_test_ L2 - https://www.jospt.org/doi/10.2519/jospt.2010.3424?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -