دوره 7، شماره 2 - ( Summer 2017 -- 1396 )                   جلد 7 شماره 2 صفحات 79-88 | برگشت به فهرست نسخه ها


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mongashti Joni Y, Fatahi F, Ghanizadeh Hasar N, Hosseinpour E. Effect of Genu Varum Deformity on Gluteus Medius Muscle Activity and Postural Control During Single-Leg Jump-Landing. PTJ. 2017; 7 (2) :79-88
URL: http://ptj.uswr.ac.ir/article-1-319-fa.html
منگشتی جونی یوسف، فتاحی فرج، غنی زاده حصار نرمین. Effect of Genu Varum Deformity on Gluteus Medius Muscle Activity and Postural Control During Single-Leg Jump-Landing. فصلنامه فیزیک درمانی. 1396; 7 (2) :79-88

URL: http://ptj.uswr.ac.ir/article-1-319-fa.html


چکیده:   (1415 مشاهده)

Purpose: Genu varum deformity changes the line of gravity from center of knee towards the medial side. This deviation results in changes in the upper part of the lower extremity that can affect postural control as well as the position and activity of the proximal muscles of the knee joint, like the gluteus medius muscle. Therefore this study aims to investigate the effect of genu varum disorder on the activity of gluteus medius muscle and postural control during single-leg jump-landing exercise.
Methods: A total of 28 male students of Physical Education Major (Mean [SD] age, weight, and height: 21.53[1.65] y, 66.76[7.51] kg, and 173.38[4.54] cm, respectively) were enrolled and studied in two groups of genu varum (14 students) and normal ones (14 students). The activity level of gluteus medius muscle and the ground reaction force were measured using electromyography device and force plate, respectively in single-leg jump-landing exercise. In order to analyze the data, we used the Independent t test at significance level of P<0.05. Participants were asked to perform the single-leg jump-landing exercise with 50% of maximum vertical jump and land on the force plate using one leg. The RMS of gluteus medius muscle was measured using MATLAB software.
Results: There is a significant difference between the genu varum and normal group in terms of mean activity of gluteus medius muscle before and after the landing. There were significant difference between these groups with regard to time to stabilization in anterior-posterior direction, while significantly higher time to stabilization was found in the genu varum group compared to the normal groups in medial-lateral and overall direction. The time to stabilization of the subjects in the directions of medial-laterallateral and anterior-posterior and total Resultant Vector (RV) using the force plate in the jump-landing movement was evaluated. There was no significant difference in the time to stabilization between the two groups of the knee parenthesis and the normal knee in the anterior-posterior direction (P>0.05), but the time to stabilization in the medial-lateral and in resultant vector direction in the genu varum group was significantly more than those in normal knee group (P<0.05).
Conclusion: Participants with genu varum have weakness in postural stability in medial-lateral and total RV direction that might decrease the activity of gluteus medius muscle. This might increase the demand on the muscle for stabilizing hip and pelvis which decreases control of transverse and frontal part of hip and finally affects postural stability in medial-lateral direction (may be due to inappropriate activity of the hip). Thus, improvement of gluteus medius muscle might improve medial-lateral control of the posture in individuals with genu varum.

متن کامل [PDF 613 kb]   (424 دریافت)    
نوع مطالعه: پژوهشي | موضوع مقاله: تخصصي
دریافت: ۱۳۹۵/۸/۲۰ | پذیرش: ۱۳۹۶/۱/۶ | انتشار: ۱۳۹۶/۴/۱۰

فهرست منابع
1. Van Gheluwe B, Kirby KA, Hagman F. Effects of simulated genu valgum and genu varum on ground reaction forces and subtalar joint function during gait. Journal of the American Podiatric Medical Association. 2005; 95(6):531–41. doi: 10.7547/0950531 [DOI:10.7547/0950531]
2. Johnson F, Leitl S, Waugh W. The distribution of load across the knee. A comparison of static and dynamic measurements. The Journal of Bone and Joint Surgery British volume. 1980; 62-B(3):346–9. doi: 10.1302/0301-620x.62b3.7410467 [DOI:10.1302/0301-620X.62B3.7410467]
3. Witvrouw E, Danneels L, Thijs Y, Cambier D, Bellemans J. Does soccer participation lead to genu varum. Knee Surgery, Sports Traumatology, Arthroscopy. 2009; 17(4):422–7. doi: 10.1007/s00167-008-0710-z [DOI:10.1007/s00167-008-0710-z]
4. Subotnick SI. Podiatric sports medicine. Hoboken, N.J.: Wiley-Blackwell; 1975.
5. Nyland J, Smith S, Beickman K, Armsey T, Caborn DNM. Frontal plane knee angle affects dynamic postural control strategy during unilateral stance. Medicine & Science in Sports & Exercise. 2002; 34(7):1150–7. doi: 10.1097/00005768-200207000-00016 [DOI:10.1097/00005768-200207000-00016]
6. Samaei A, Bakhtiary A, Elham F, Rezasoltani A. Effects of genu varum deformity on postural stability. International Journal of Sports Medicine. 2012; 33(6):469–73. doi: 10.1055/s-0031-1301331 [DOI:10.1055/s-0031-1301331]
7. Colby SM, Hintermeister RA, Torry MR, Steadman JR. Lower limb stability with ACL impairment. Journal of Orthopaedic & Sports Physical Therapy. 1999; 29(8):444–54. doi: 10.2519/jospt.1999.29.8.444 [DOI:10.2519/jospt.1999.29.8.444]
8. Ikezoe T, Asakawa Y, Tsutou A. The relationship between quadriceps strength and balance to fall of elderly admitted to a nursing home. Journal of Physical Therapy Science. 2003; 15(2):75–9. doi doi: 10.1589/jpts.15.75 [DOI:10.1589/jpts.15.75]
9. Moxley Scarborough D, Krebs DE, Harris BA. Quadriceps muscle strength and dynamic stability in elderly persons. Gait & Posture. 1999; 10(1):10–20. doi: 10.1016/s0966-6362(99)00018-1 [DOI:10.1016/S0966-6362(99)00018-1]
10. Hart JM, Garrison JC, Kerrigan DC, Palmieri-Smith R, Ingersoll CD. Gender differences in gluteus medius muscle activity exist in soccer players performing a forward jump. Research in Sports Medicine. 2007; 15(2):147–55. doi: 10.1080/15438620701405289 [DOI:10.1080/15438620701405289]
11. Russell KA, Palmieri RM, Zinder SM, Ingersoll CD. Sex differences in valgus knee angle during a single-leg drop jump. Journal of athletic training. 2006; 41(2):166-71. PMCID: PMC1472649 [PMID] [PMCID]
12. Earl JE. Gluteus medius activity during 3 variations of isometric single-leg stance. Journal of Sport Rehabilitation. 2005; 14(1):1–11. doi: 10.1123/jsr.14.1.1 [DOI:10.1123/jsr.14.1.1]
13. Horak FB. Clinical measurement of postural control in adults. Physical Therapy. 1987; 67(12):1881–5. doi: 10.1093/ptj/67.12.1881 [DOI:10.1093/ptj/67.12.1881]
14. Lee SP, Souza RB, Powers CM. The influence of hip abductor muscle performance on dynamic postural stability in females with patellofemoral pain. Gait & Posture. 2012; 36(3):425–9. doi: 10.1016/j.gaitpost.2012.03.024 [DOI:10.1016/j.gaitpost.2012.03.024]
15. Gribble PA, Mitterholzer J, Myers AN. Normalizing considerations for time to stabilization assessment. Journal of Science and Medicine in Sport. 2012; 15(2):159–63. doi: 10.1016/j.jsams.2011.07.012 [DOI:10.1016/j.jsams.2011.07.012]
16. Carcia CR, Martin RL. The influence of gender on gluteus medius activity during a drop jump. Physical Therapy in Sport. 2007; 8(4):169–76. doi: 10.1016/j.ptsp.2007.06.002 [DOI:10.1016/j.ptsp.2007.06.002]
17. Ayotte NW, Stetts DM, Keenan G, Greenway EH. Electromyographical analysis of selected lower extremity muscles during 5 unilateral weight-bearing exercises. Journal of Orthopaedic & Sports Physical Therapy. 2007; 37(2):48–55. doi: 10.2519/jospt.2007.2354 [DOI:10.2519/jospt.2007.2354]
18. Kaminski TW, Ross SE, Guskiewicz KM. Time to stabilization: a method for analyzing dynamic postural stability. Athletic Therapy Today. 2003; 8(3):37–9. doi: 10.1123/att.8.3.37 [DOI:10.1123/att.8.3.37]
19. Ross SE, Guskiewicz KM, Yu B. Single-leg jump-landing stabilization times in subjects with functionally unstable ankles. Journal of athletic training. 2005; 40(4):298-304. PMCID: PMC1323291 [PMID] [PMCID]
20. Ross SE, Guskiewicz KM, Gross MT, Yu B. Assessment tools for identifying functional limitations associated with functional ankle instability. Journal of Athletic Training. 2008; 43(1):44–50. doi: 10.4085/1062-6050-43.1.44 [DOI:10.4085/1062-6050-43.1.44]
21. Perron M, Hébert LJ, McFadyen BJ, Belzile S, Regnieàre M. The ability of the Biodex Stability System to distinguish level of function in subjects with a second-degree ankle sprain. Clinical Rehabilitation. 2007; 21(1):73–81. doi: 10.1177/0269215506071288 [DOI:10.1177/0269215506071288]
22. Prentice WE. Rehabilitation techniques for sports medicine and athletic training with laboratory manual and esims password card. 4th edition. New york: McGraw-Hill Humanities; 2004.
23. Orr R. Contribution of muscle weakness to postural instability in the elderly. European Journal of Physical and Rehabilitation Medicine. 2010; 46(2):183-220. PMID: 20485224 [PMID]
24. Winter DA, Prince F, Frank JS, Powell C, Zabjek KF. Unified theory regarding A/P and M/L balance in quiet stance. Journal of Neurophysiology. 1996; 75(6):2334–43. doi: 10.1152/jn.1996.75.6.2334 [DOI:10.1152/jn.1996.75.6.2334]
25. Hoy MG, Zajac FE, Gordon ME. A musculoskeletal model of the human lower extremity: The effect of muscle, tendon, and moment arm on the moment-angle relationship of musculotendon actuators at the hip, knee, and ankle. Journal of Biomechanics. 1990; 23(2):157–69. doi: 10.1016/0021-9290(90)90349-8 [DOI:10.1016/0021-9290(90)90349-8]
26. Gribble PA, Hertel J. Effect of lower-extremity muscle fatigue on postural control. Archives of Physical Medicine and Rehabilitation. 2004; 85(4):589–92. doi: 10.1016/j.apmr.2003.06.031 [DOI:10.1016/j.apmr.2003.06.031]
27. Miller PK, Bird AM. Localized muscle fatigue and dynamic balance. Perceptual and Motor Skills. 1976; 42(1):135–8. doi: 10.2466/pms.1976.42.1.135 [DOI:10.2466/pms.1976.42.1.135]
28. Hubbard TJ, Kramer LC, Denegar CR, Hertel J. Correlations among multiple measures of functional and mechanical instability in subjects with chronic ankle instability. Journal of Athletic Training. 2007; 42(3):361-6. PMCID: PMC1978473 [PMID] [PMCID]
29. Kendall FP, McCreary EK, Provance PG. Muscles: Testing and function with posture and pain. Baltimore: Lippincott Williams & Wilkins; 2005.
30. Sahrmann S. Movement system impairment syndromes of the extremities, cervical and thoracic spines. Amsterdam: Elsevier; 2011.
31. Nyland J, Kuzemchek S, Parks M, Caborn DNM. Femoral anteversion influences vastus medialis and gluteus medius EMG amplitude: composite hip abductor EMG amplitude ratios during isometric combined hip abduction-external rotation. Journal of Electromyography and Kinesiology. 2004; 14(2):255–61. doi: 10.1016/s1050-6411(03)00078-6 [DOI:10.1016/S1050-6411(03)00078-6]
32. Neumann DA. Kinesiology of the musculoskeletal system: Foundations for physical rehabilitation. Philadelphia: Mosby; 2002.

ارسال نظر درباره این مقاله : نام کاربری یا پست الکترونیک شما:
CAPTCHA code

ارسال پیام به نویسنده مسئول


کلیه حقوق این وب سایت متعلق به فیزیک درمانی- نشریه تخصصی فیزیوتراپی می باشد.

طراحی و برنامه نویسی : یکتاوب افزار شرق

© 2019 All Rights Reserved | Physical Treatments - Specific Physical Therapy Journal

Designed & Developed by : Yektaweb