Volume 18, Issue 19 (7-2020)                   2020, 18(19): 35-45 | Back to browse issues page

XML Persian Abstract Print

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

Qeysari S, Tahmasebi Broujeni S, Shahbazi M. The effect of focus of attention on electromyography activity of the rectus abdominus muscle in vertical jump. Journal title 2020; 18 (19) :35-45
URL: http://jsmt.khu.ac.ir/article-1-432-en.html
Abstract:   (1514 Views)
Various studies have shown that the external focus of attention is better than the internal focus of attention. But, so far no study has been investigated the level of electrical activity of the rectus abdominus muscle as a trunk stabilizer muscle. Therefore, the purpose of this study was to investigate the effect of focus of attention on electromyography activity of the rectus abdominus muscle during Different phases of vertical jump.Twelve male elite volleyball players from university of Tehran Participated in this research voluntary. They performed a vertical jump on the force plate in both internal and external focus of attention condition. Rectus abdominus Surface electromyography (SEMG) signals recorded by electromyography apparatus during vertical jump and The electrical activity of this muscle was calculated in the different phases of vertical jump motion.  Paired t-test results showed that height of jump under the external focus was higher than the internal focus. In addition, this  results showed that internal focus caused significant increasing in Rectus abdominus EMG in comparison to external focus during concentric phase. But, there was no significant difference in the eccentric phase between the external and internal focus of attention conditions. These results suggest that the external focus of attention effectively increases the efficiency of vertical jump. Therefor; we recommend using the external focus of attention instructions when executing vertical jump movement.

Full-Text [PDF 1258 kb]   (356 Downloads)    
Type of Study: Research | Subject: Special
Received: 2020/07/18 | Accepted: 2020/07/15 | Published: 2020/07/15

1. Wulf, G. (2007). Attentional focus and motor learning: A review of 10 years of research. E-journal Bewegung und Training. 1(2-3):1-11. [DOI:10.5040/9781492596844]
2. Wulf, G. (2007). Attention and motor skill learning. Human Kinetics. [DOI:10.5040/9781492596844]
3. Wulf, G., Zachry, T., Granados, C., Dufek, J.S. (2007). Increases in jump-and-reach height through an external focus of attention. International Journal of Sports Science & Coaching. 2(3):275-84. [DOI:10.1260/174795407782233182]
4. Wulf, G., Dufek, J.S., Lozano, L., Pettigrew, C. (2010). Increased jump height and reduced EMG activity with an external focus. Human Movement Science. 29(3):440-8. [DOI:10.1016/j.humov.2009.11.008]
5. Wulf, G., Su, J. (2007). An external focus of attention enhances golf shot accuracy in beginners and experts. Research Quarterly for Exercise and Sport. 78(4):384-9. [DOI:10.1080/02701367.2007.10599436]
6. Tahmasebi, F., Aslankhani, M., Namazizadeh, M. (2010). The effects of focusing attention and internal and external imagery on the acquisition and retention of Dart Throw skill. Research on Sport Sciences. (25) :99-126. (Persian)
7. Perreault, M.E., French, K.E. (2015). External-focus feedback benefits free-throw learning in children. Research Quarterly for Exercise and Sport. 86(4). 422-427.‌ [DOI:10.1080/02701367.2015.1051613]
8. Parvizi, N., Shojaee, M., Khalaji, H., Daneshfar, A. (2011).The effect of change direction of attention by using educational self-talking., Technique on the performance and learning o Free basketball f throw at young student girls. Research in Sport Management and Motor Behavior. (1):41-51
9. Salajeghe, A., Saberi Kakhki, A.R., Zareazade, M. (2014). The effect of attentional focus types as the self talk form on acquisition and retention of Basketball chest pass. Motor Behavior. 6(16):107-20. (Persian)
10. Hadler, R., Chiviacowsky, S., Wulf, G., Schild, J.F.G. (2014). Children's learning of tennis skills is facilitated by external focus instructions. Motriz: Revista de Educação Física. 20(4):418-22.‌ [DOI:10.1590/S1980-65742014000400008]
11. Abdollahipour, R., Nieto, M.P., Psotta, R., Wulf, G. (2017). External focus of attention and autonomy support have additive benefits for motor performance in children. Psychology of Sport and Exercise 32:17-24.‌ [DOI:10.1016/j.psychsport.2017.05.004]
12. Wulf, G., McNevin, N.H., Fuchs, T., Ritter, F., Toole, T. (2000). Attentional focus in complex skill learning. Research Quarterly for Exercise and Sport. 71(3):229-39.‌ [DOI:10.1080/02701367.2000.10608903]
13. Zachry, T., Wulf, G., Mercer, J., Bezodis, N. (2005). Increased movement accuracy and reduced EMG activity as the result of adopting an external focus of attention. Brain research bulletin. 67(4):304-9.‌ [DOI:10.1016/j.brainresbull.2005.06.035]
14. Vance, J., Wulf, G., Töllner, T., McNevin, N., Mercer, J. (2004). EMG activity as a function of the performer's focus of attention. Journal of Motor Behavior. 36(4):450-9.‌ [DOI:10.3200/JMBR.36.4.450-459]
15. Ducharme, S.W., Wu, W.F., Lim, K., Porter, J.M., Geraldo, F. (2016). Standing long jump performance with an external focus of attention is improved as a result of a more effective projection angle. The Journal of Strength & Conditioning Research. 30(1):276-81.‌ [DOI:10.1519/JSC.0000000000001050]
16. Lohse, K.R., Jones, M., Healy, A.F., Sherwood, D.E. (2014). The role of attention in motor control. Journal of Experimental Psychology: General. 143(2):930-48. [DOI:10.1037/a0032817]
17. Richer, N., Saunders, D., Polskaia, N., Lajoie, Y. (2017). The effects of attentional focus and cognitive tasks on postural sway may be the result of automaticity. Gait & Posture. 54: 45-9.‌ [DOI:10.1016/j.gaitpost.2017.02.022]
18. Parhizkar Kohneh Oghaz. J., Zarghami. M., Ghotbi Varzaneh. A., Ghorbani. A. (2013). Age and Attentional Focus Related Differences in Postural Control. Journal of Development and Motor Learning. (5):41-56. (Persian)
19. Kal, E.C., van der Kamp, J., Houdijk, H. (2013). External attentional focus enhances movement automatization: A comprehensive test of the constrained action hypothesis. Human Movement Science. 32(4): 527-39.‌ [DOI:10.1016/j.humov.2013.04.001]
20. Marchant, D.C., Greig, M., Scott, C. (2008). Attentional focusing strategies influence muscle activity during isokinetic biceps curls. Athletic Insight: The Online Journal of Sport Psychology.‌ (10)2.
21. Lohse, K.R., Sherwood, D.E., Healy, A.F. (2010). How changing the focus of attention affects performance, kinematics, and electromyography in dart throwing. Human Movement Science. 29(4): 542-55.‌ [DOI:10.1016/j.humov.2010.05.001]
22. Bell, J.J., Hardy, J. (2009). Effects of attentional focus on skilled performance in golf. Journal of Applied Sport Psychology. 21(2):163-77.‌ [DOI:10.1080/10413200902795323]
23. Ford, P., Hodges, N.J., Williams, A.M. (2005). Online attentional-focus manipulations in a soccer-dribbling task: Implications for the proceduralization of motor skills. Journal of Motor Behavior. 37(5):386-94.‌ [DOI:10.3200/JMBR.37.5.386-394]
24. Wulf, G., Dufek, J.S. (2009). Increased jump height with an external focus due to enhanced lower extremity joint kinetics. Journal of Motor Behavior. 41(5):401-9.‌ [DOI:10.1080/00222890903228421]
25. Okubo, Y., Kaneoka, K., Shiina, I., Tatsumura, M., Miyakawa, S. (2013). Abdominal muscle activity during a standing long jump. Journal of Orthopaedic & Sports Pphysical Therapy. 43(8): 577-82.‌ [DOI:10.2519/jospt.2013.4420]
26. Iida, Y., Kanehisa, H., Inaba, Y., Nakazawa, K. (2011). Activity modulations of trunk and lower limb muscles during impact-absorbing landing. Journal of Electromyography and Kinesiology. 21(4): 602-9.‌ [DOI:10.1016/j.jelekin.2011.04.001]
27. Weinberg, R.S., Smith, J., Jackson, A., Gould, D. (1984). Effect of association, dissociation and positive self-talk strategies on endurance performance. Canadian Journal of Applied Sport Sciences.‌ 9(1):25-32.
28. Kershner, A.L. (2017). The effect of internal vs. External focus of attention instructions on countermovement jump variables in NCAA division I baseball players. PhD Thesis. University of Kansas.‌
29. Linthorne, N.P. (2001). Analysis of standing vertical jumps using a force platform. American Journal of Physics. 69(11):1198-204. [DOI:10.1119/1.1397460]
30. Konrad, P. (2005). The abc of emg. A Practical Introduction to Kinesiological Electromyography. 30-5.‌
31. Wulf, G., McNevin, N., Shea, C.H. (2001). The automaticity of complex motor skill learning as a function of attentional focus. The Quarterly Journal of Experimental Psychology: Section A. 54(4):1143-54. [DOI:10.1080/713756012]
32. Wulf, G., Lewthwaite, R. (2016). Optimizing performance through intrinsic motivation and attention for learning: The Optima theory of motor learning. Psychonomic Bulletin & Review. 23(5):1382-14.‌ [DOI:10.3758/s13423-015-0999-9]
33. Conley, M.S., Stone, M.H., Nimmons, M., Dudley, G.A. (1997). Resistance training and human cervical muscle recruitment plasticity. Journal of Applied Physiology. 83(6): 2105-11.‌ [DOI:10.1152/jappl.1997.83.6.2105]
34. Moritani, T., deVries, H.A. (1979). Neural factors versus hypertrophy in the time course of muscle strength gain. American Journal of Physical Medicine. 58(3):115-30.‌
35. Lohse, K.R., Sherwood, D.E. (2012). Thinking about muscles: The neuromuscular effects of attentional focus on accuracy and fatigue. Acta Psychologica. 140(3): 236-45.‌ [DOI:10.1016/j.actpsy.2012.05.009]
36. Schmidt, R.A., Lee, T.D., Winstein, C., Wulf, G., Zelaznik, H.N. (2018). Motor control and learning: A behavioral emphasis. Human kinetics.‌

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2023 CC BY-NC 4.0 | Research in Sport Medicine and Technology

Designed & Developed by: Yektaweb