پژوهش در طب ورزشی و فناوری

تأثیر میزان افت نیروی اکستنشن زانو ناشی از خستگی بر هم انقباضی عضلانی

نویسندگان

لیلا غزاله 1
فهیمه بخشی زاده 1
رعنا فیاض میلانی 2

1 دانشگاه الزهرا

2 دانشگاه شهید بهشتی

https://doi.org/10.29252/jsmt.19.1.65
چکیده
تغییر میزان هم‌انقباضی ناشی از خستگی در درصدهای مختلف افت نیرو نیاز به بررسی دارد. هدف تحقیق حاضر بررسی تأثیر میزان افت نیروی اکستنشن زانو ناشی از خستگی بر هم‌انقباضی عضلانی بود. 10 زن سالم و فعال با میانگین سنی 2/99±26/10 سال پروتکل خستگی که شامل 5 ثانیه حداکثر انقباض ایزومتریک ارادی (MVIC) اکستنشن زانو و 5 ثانیه استراحت بود را اجرا کردند. هم‌انقباضی عضلات، در تکرارهایی موردمحاسبه قرار گرفت که میزان نیروی MVIC در آن تکرارها نسبت به نیروی پیش از خستگی به میزان 10، 20، 30، 40 و 50 درصد کاهش‌یافته بود. نیروی اکستنشن زانو و فعالیت عضلات منتخب به ترتیب با استفاده از دستگاه آیزوکنتیک و سیستم الکترومایوگرافی ثبت شدند. به لحاظ آماری اختلافی بین هم‌انقباضی عضلات پهن‌ داخلی و خارجی در درصدهای متفاوت افت نیرو وجود نداشت. هم‌انقباضی عضلات راست ‌‌رانی و دوسررانی در 40 و 50 درصد افت نیرو، نسبت به هم‌انقباضی پیش از خستگی افزایش یافت (0/01>P). هم‌انقباضی عضلات دوسررانی و پهن ‌خارجی در 30،20 و 40 درصد افت نیرو و هم‌انقباضی عضلات دوسررانی و پهن ‌داخلی در 40 درصد افت نیرو، نسبت به هم‌انقباضی پیش از خستگی افزایش یافت (0/05>P). نتایج به‌طورکلی نشان دادند تغییر شاخص هم‌انقباضی هنگام خستگی تحت تأثیر عضله منتخب و میزان افت نیرو بود. یافته تحقیق حاضر می‌تواند به محققان در تصمیم‌گیری درباره نحوه تأثیر خستگی عصبی-عضلانی بر هم‌انقباضی عضلات کمک نماید.

کلیدواژه‌ها

نیروی عضلانی
الکترومایوگرافی
خستگی
هم‌انقباضی

عنوان مقاله English

Effect of knee extension force reduction induced by fatigue on muscle co-contraction

نویسندگان English

Leila Ghazaleh 1
Fahimeh Bakhshizadeh 1
Rana Fayazmilani 2
1 Assistant Professor, Sport biomechanics, Department of Sport Physiology, Faculty of Physical Education and Sport Sciences, Alzahra University, Tehran, Iran
2 Shahid Beheshti University
چکیده English

It is necessary to examine the changes of muscle co-contraction in different percent of fatigue-induced force reduction. The present study aims to investigate the effect of fatigue-induced force reduction of knee extension on muscle co-contraction. Ten healthy and active women aged 26.10±2.99 years performed fatigue protocol including 5 seconds of maximal voluntary isometric contraction (MVIC) of the knee extension and a 5-second rest. Muscle co-contraction was calculated for each subject in the repetitions in which the MVIC force was reduced by 10, 20, 30, 40 and 50% as compared to the pre-fatigue MVIC force. Knee extension force and muscle activity measured by Isokinetic and electromyography apparatus, respectively. The difference between co-contraction of vastus lateralis and medialis in different percentages of force reduction was not statistically significant. The co-contraction of rectus femoris and biceps femoris increased by 40 and 50% of force reduction compared to pre-fatigue co-contraction (P<0.01). Co-contraction of biceps femoris and vastus lateralis increased by 20, 30, and 40%, as well as co-contraction of biceps femoris and vastus medialis increased 40% of the force reduction, compared to pre-fatigue co-contraction (P <0.05). The results, overall, showed that the change of co-contraction during fatigue is influenced by the selected muscle and the rate of force reduction. This finding can help researchers decide how neuromuscular fatigue effects on muscle co-contraction

کلیدواژه‌ها English

Muscle force
Electromyography
Fatigue
Co-contraction
1. González-Izal M, Malanda A, Gorostiaga E, Izquierdo M. (2012). Electromyographic models to assess muscle fatigue. Journal of Electromyography and Kinesiology. 22(4):501-12.
2. Enoka RM, Duchateau J. (2008). Muscle fatigue: what, why and how it influences muscle function. The Journal of Physiology. 586(1):11-23.
3. Boyas S, Guével A. (2001). Neuromuscular fatigue in healthy muscle: underlying factors and adaptation mechanisms. Annals of Physical and Rehabilitation Medicine. 54(2):88-108.
4. da Silva CR, de Oliveira Silva D, Aragão FA, Ferrari D, Alves N, de Azevedo FM. (2014). Influence of neuromuscular fatigue on co-contraction between vastus nedialis and vastus lateralis during isometric contractions. Kinesiology. 46 (2).
5. Di Nardo F, Mengarelli A, Maranesi E, Burattini L, Fioretti S. (2015). Assessment of the ankle muscle co-contraction during normal gait: A surface electromyography study. Journal of Electromyography and Kinesiology. 25(2):347-54.
6. Rosa M. (2015). Co-contraction Role on Human Motor Control. A Neural Basis J Nov Physiother. 5(248):2.
7. Katsavelis D, Threlkeld AJ. (2014). Quantifying thigh muscle co-activation during isometric knee extension contractions: Within-and between-session reliability. Journal of Electromyography and Kinesiology.24(4):502-7.
8. Detrembleur C, Dierick F, Stoquart G, Chantraine F, Lejeune T. (2003). Energy cost, mechanical work, and efficiency of hemiparetic walking. Gait & Posture. 18(2):47-55.
9. Richards C, Higginson J. (2010). Knee contact force in subjects with symmetrical OA grades: differences between OA severities. Journal of Biomechanics. 43(13):2595-600.
10. Peterson DS, Martin PE. (2010). Effects of age and walking speed on coactivation and cost of walking in healthy adults. Gait & Posture. 31(3):355-9.
11. Smith CM, Housh TJ, Hill EC, Keller JL, Johnson GO, Schmidt RJ. (2018). Co-Activation, Estimated Anterior and Posterior Cruciate Ligament Forces, and Motor Unit Activation Strategies during the Time Course of Fatigue. Sports. 6(4):104.
12. Nara S, Kaur M, Shaw D, Bhatia D. (2016). Significance of Bilateral Coactivation Ratio for Analysis of Neuromuscular Fatigue of Selected Knee Extensor Muscles during Isometric Contractions at 0º in Sportspersons. Biomedical Science. 4(2):31-6.
13. Rothmuller C, Cafarelli E. (1995). Effect of vibration on antagonist muscle coactivation during progressive fatigue in humans. The Journal of Physiology. 485(3):857-64.
14. Missenard O, Mottet D, Perrey S. (2008). The role of cocontraction in the impairment of movement accuracy with fatigue. Experimental Brain Research. 185(1):151-6.
15. Kellis E, Zafeiridis A, Amiridis IG. (2011). Muscle coactivation before and after the impact phase of running following isokinetic fatigue. Journal of Athletic Training. 46(1):11-9.
16. Gates DH, Dingwell JB. (2011). The effects of muscle fatigue and movement height on movement stability and variability. Experimental Brain Research. 209(4):525-36.
17. Wikstrom EA, Powers ME, Tillman MD. (2004). Dynamic stabilization time after isokinetic and functional fatigue. Journal of Athletic Training. 39(3):247.
18. Johanson E, Brumagne S, Janssens L, Pijnenburg M, Claeys K, Pääsuke M. (2011). The effect of acute back muscle fatigue on postural control strategy in people with and without recurrent low back pain. European Spine Journal. 20(12):21.
19. Ratel S, Kluka V, Vicencio SG, Jegu A-G, Cardenoux C, Morio C, et al. (2015). Insights into the mechanisms of neuromuscular fatigue in boys and men. Medicine & Science in Sports & Exercise. 47(11):2319-28.
20. Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. (2000). Development of recommendations for SEMG sensors and sensor placement procedures. Journal of electromyography and Kinesiology.10(5):361-74.
21. Kilroy EA, Crabtree OM, Crosby B, Parker A, Barfield WR. (2016). The effect of single-leg stance on dancer and control group static balance. International Journal of Exercise Science. 9(2):110.
22. Ervilha U, Graven-Nielsen T, Duarte M. (2012). A simple test of muscle coactivation estimation using electromyography. Brazilian Journal of Medical and Biological Research. 45(10):977-81.
23. Babault N, Desbrosses K, Fabre M-S, Michaut A, Pousson M. (2006). Neuromuscular fatigue development during maximal concentric and isometric knee extensions. Journal of Applied Physiology. 100(3):780-5.
24. Taylor JL, Amann M, Duchateau J, Meeusen R, Rice CL. (2016). Neural contributions to muscle fatigue: from the brain to the muscle and back again. Medicine and Science in Sports and Exercise. 48(11):2294.
25. Forestier N, Nougier V. (1998). The effects of muscular fatigue on the coordination of a multijoint movement in human. Neuroscience letters. 252(3):187-90.
26. Gagnon D, Arsenault AB, Smyth G, Kemp F. (1992). Cocontraction changes in muscular fatigue at different levels of isometric contraction. International Journal of Industrial Ergonomics. 9(4):343-8.