آمار

تعداد نشریات31
تعداد شماره‌ها479
تعداد مقالات4,235
تعداد مشاهده مقاله7,141,894
تعداد دریافت فایل اصل مقاله4,801,984
Taheri, Behzad, Fallahmohammadi, Ziya, Irandoust, Khadijeh, Namdar Tajari, Somayeh. (1403). Electromyography investigation of eccentric and concentric phases of the biceps dumbbell curl movement after four weeks of transcranial direct current stimulation in healthy men. سامانه مدیریت نشریات علمی, 8(3), 37-48. doi: 10.22098/jast.2024.15068.1349
Behzad Taheri; Ziya Fallahmohammadi; Khadijeh Irandoust; Somayeh Namdar Tajari. "Electromyography investigation of eccentric and concentric phases of the biceps dumbbell curl movement after four weeks of transcranial direct current stimulation in healthy men". سامانه مدیریت نشریات علمی, 8, 3, 1403, 37-48. doi: 10.22098/jast.2024.15068.1349
Taheri, Behzad, Fallahmohammadi, Ziya, Irandoust, Khadijeh, Namdar Tajari, Somayeh. (1403). 'Electromyography investigation of eccentric and concentric phases of the biceps dumbbell curl movement after four weeks of transcranial direct current stimulation in healthy men', سامانه مدیریت نشریات علمی, 8(3), pp. 37-48. doi: 10.22098/jast.2024.15068.1349
Taheri, Behzad, Fallahmohammadi, Ziya, Irandoust, Khadijeh, Namdar Tajari, Somayeh. Electromyography investigation of eccentric and concentric phases of the biceps dumbbell curl movement after four weeks of transcranial direct current stimulation in healthy men. سامانه مدیریت نشریات علمی, 1403; 8(3): 37-48. doi: 10.22098/jast.2024.15068.1349

Electromyography investigation of eccentric and concentric phases of the biceps dumbbell curl movement after four weeks of transcranial direct current stimulation in healthy men

Journal of Advanced Sport Technology
دوره 8، شماره 3 - شماره پیاپی 18، آذر 2024، صفحه 37-48    اصل مقاله (1.23 M)
نوع مقاله: Original research papers
شناسه دیجیتال (DOI): 10.22098/jast.2024.15068.1349
نویسندگان
Behzad Taheri1؛ Ziya Fallahmohammadi* 1؛ Khadijeh Irandoust2؛ Somayeh Namdar Tajari3
1Exercise Physiology Department, Sports Sciences Faculty, University of Mazandaran, Babolsar, Iran
2Department of Physical Education, Imam Khomeini International University, Qazvin, Iran
3Department of Motor Behavior, Faculty of Sports Science, University of Mazandaran, Babolsar, Iran
چکیده
Transcranial direct current stimulation (tDCS) is a safe method that employs a low-intensity current to induce stimulation in the brain. The utilization of tDCS has the potential to enhance both muscular strength and performance. This study investigated the effects of transcranial direct current stimulation (tDCS) on the electromyographic (EMG) activity of the biceps during concentric and eccentric contractions.

Twenty-two healthy subjects were randomly assigned to either a tDCS group or a control group. The tDCS group received anodal tDCS over the primary motor cortex for 15 minutes, while the control group received nothing. The subjects performed maximal isometric contractions (MVIC) as well as concentric and eccentric contractions of the biceps with 80% of their one-repetition maximum (1RM). After preliminary tests, a covariance analysis was conducted.

Results showed that 1RM in tDCS group was significantly higher than control group (p < 0.05). After 4 weeks of tDCS interventions in full range of motion and in the concentric phase of movement, tDCS group showed a significant decrease in the normalized RMS of biceps brachii (P<0.05). The data illustrates a reduction of 22% during the concentric phase and 18% during the eccentric phase.

Our findings indicate that tDCS improve muscular strength and neuromuscular efficiency. Nevertheless, it is important to use caution when interpreting the findings of this study, given its limited time period and the small sample size of the group.
کلیدواژه‌ها
tDCS؛ EMG؛ Concentric؛ Eccentric؛ Strength
مراجع
1. Nitsche, M.A. and W. Paulus, Excitability changes induced in the human motor cortex by
weak transcranial direct current stimulation. The Journal of physiology, 2000. 527(Pt 3): p.
633. https://doi.org/10.1111/j.1469-7793.2000.t01-1-00633.x
2. Pourrahim Ghouroghchi, A., A. Jafarnezhadgero, and M. Abdollahpour Darvishani,
Determination of Selected Lower Limb Muscles Electromyography Frequency Spectrum in
Male Soccer Players with ACL Injury during Three Running Patterns. Journal of Advanced
Sport Technology, 2022. 6(2): p. 1-9. https://doi.org/10.22098/jast.2022.1875
3. McCafferty, W.B. and S.M. Horvath, Specificity of exercise and specificity of training: a
subcellular review. Research Quarterly. American Alliance for Health, Physical Education
and Recreation, 1977. 48(2): p. 358-371. https://doi.org/10.1080/10671315.1977.10615433
4. Nitsche, M.A. and W. Paulus, Sustained excitability elevations induced by transcranial DC
motor cortex stimulation in humans. Neurology, 2001. 57(10): p. 1899-1901.
https://doi.org/10.1212/WNL.57.10.1899
5. Enoka, R.M., Eccentric contractions require unique activation strategies by the nervous
system. Journal of applied physiology, 1996. 81(6): p. 2339-2346.
https://doi.org/10.1152/jappl.1996.81.6.2339
6. Sepehrian, M., et al., Effects of Cycling-induced Fatigue on Lower Extremity Muscles Synergy
in Novice Triathletes. Journal of Advanced Sport Technology, 2022. 6(1): p. 103-112.
https://doi.org/10.22098/jast.2022.1813
7. Fang, Y., et al., Greater movement-related cortical potential during human eccentric versus
concentric muscle contractions. Journal of Neurophysiology, 2001. 86(4): p. 1764-1772.
https://doi.org/10.1152/jn.2001.86.4.1764
8. Nardone, A., C. Romano, and M. Schieppati, Selective recruitment of high‐threshold human
motor units during voluntary isotonic lengthening of active muscles. The Journal of
physiology, 1989. 409(1): p. 451-471. https://doi.org/10.1113/jphysiol.1989.sp017507                                                           9. Hortobagyi, T., et al., Adaptive responses to muscle lengthening and shortening in humans.
Journal of applied physiology, 1996. 80(3): p. 765-772.
https://doi.org/10.1152/jappl.1996.80.3.765
10. Tesch, P., et al., Force and EMG signal patterns during repeated bouts of concentric or
eccentric muscle actions. Acta Physiologica Scandinavica, 1990. 138(3): p. 263-271.
https://doi.org/10.1111/j.1748-1716.1990.tb08846.x
11. Golparian, M., M. Anbarian, and A. Golparian, Effects of Trunk and Foot Positions on
Electromyographic Activity and Co-contraction of Selected Lower Extremity Muscles During
Leg-Press Resistance Training. Journal of Advanced Sport Technology, 2021. 5(1): p. 17-26.
https://doi.org/10.22098/jast.2021.1149
12. Lattari, E., et al., Can transcranial direct current stimulation improve muscle power in
individuals with advanced weight-training experience? The Journal of Strength &
Conditioning Research, 2020. 34(1): p. 97-103.
https://doi.org/10.1519/JSC.0000000000001956
13. Lu, P., et al., Transcranial direct current stimulation enhances muscle strength of nondominant knee in healthy young males. Frontiers in Physiology, 2021. 12: p. 788719.
https://doi.org/10.3389/fphys.2021.788719
14. Jafarnezhadgero, A., et al., Effect of Eight Weeks of Training on Artificial Grass, Natural
Grass, and Synthetic Surface on Ankle Joint Co-Contraction during Running in Individuals
with Over-Pronation. Journal of Advanced Sport Technology, 2023. 7(4): p. 25-38.
https://doi.org/10.22098/jast.2023.2882
15. Lindenberg, R., et al., Bihemispheric brain stimulation facilitates motor recovery in chronic
stroke patients. Neurology, 2010. 75(24): p. 2176-2184.
https://doi.org/10.1212/WNL.0b013e318202013a
16. Hermens, H.J., et al., European recommendations for surface electromyography. Roessingh
research and development, 1999. 8(2): p. 13-54.
https://cir.nii.ac.jp/crid/1571698600203353856
17. Mewett, D.T., K.J. Reynolds, and H. Nazeran, Reducing power line interference in digitised
electromyogram recordings by spectrum interpolation. Medical and Biological Engineering
and Computing, 2004. 42: p. 524-531. https://doi.org/10.1007/BF02350994
18. Cho, Y.J. and J.Y. Kim, The effects of load, flexion, twisting and window size on the
stationarity of trunk muscle EMG signals. International Journal of Industrial Ergonomics,
2012. 42(3): p. 287-292. https://doi.org/10.1016/j.ergon.2012.02.004
19. Brzycki, M., Strength testing—predicting a one-rep max from reps-to-fatigue. Journal of
physical education, recreation & dance, 1993. 64(1): p. 88-90.
https://doi.org/10.1080/07303084.1993.10606684
20. Nitsche, M.A., et al., Facilitation of implicit motor learning by weak transcranial direct
current stimulation of the primary motor cortex in the human. Journal of cognitive
neuroscience, 2003. 15(4): p. 619-626. https://doi.org/10.1162/089892903321662994
21. Hikosaka, M. and Y. Aramaki, Effects of bilateral transcranial direct current stimulation on
simultaneous bimanual handgrip strength. Frontiers in Human Neuroscience, 2021. 15: p.
674851. https://doi.org/10.3389/fnhum.2021.674851
22. Cadore, E.L., et al., Physiological effects of concurrent training in elderly men. International
journal of sports medicine, 2010: p. 689-697. https://doi.org/10.1055/s-0030-1261895
23. Cadore, E.L., et al., Neuromuscular economy, strength, and endurance in healthy elderly men.
The Journal of Strength & Conditioning Research, 2011. 25(4): p. 997-1003.
https://doi.org/10.1519/JSC.0b013e3181d650ba
24. Thair, H., et al., Transcranial direct current stimulation (tDCS): a beginner's guide for design
and implementation. Frontiers in neuroscience, 2017. 11: p. 276151.
https://doi.org/10.3389/fnins.2017.00641
25. Colomer-Poveda, D., et al., Effects of 4 weeks of low-load unilateral resistance training, with
and without blood flow restriction, on strength, thickness, V wave, and H reflex of the soleus muscle in men. European journal of applied physiology, 2017. 117: p. 1339-1347.
https://doi.org/10.1007/s00421-017-3622-0
26. Lattari, E., et al., Acute effects of single dose transcranial direct current stimulation on muscle
strength: A systematic review and meta-analysis. PLoS One, 2018. 13(12): p. e0209513.
https://doi.org/10.1371/journal.pone.0209513
27. Yi, D., Y. Sung, and J. Yim, Effect of transcranial direct current stimulation on walking
speed, functional strength, and balance in older adults: A randomized, double-blind
controlled trial. Medical Science Monitor: International Medical Journal of Experimental and
Clinical Research, 2021. 27: p. e932623-1. https://doi.org/10.12659/MSM.932623

آمار
تعداد مشاهده مقاله: 297
تعداد دریافت فایل اصل مقاله: 317


سامانه مدیریت نشریات علمی. قدرت گرفته از سیناوب