Document Type : Research Paper
Authors
1 Department of Exercise Physiology, Mahallat Branch, Islamic Azad University, Mahallat, I.R. Iran
2 Department of Sport Sciences, University of Bojnord, Bojnord, Iran.
Abstract
The aim of this study was to assess the effect of resistance eccentric and concentric training on electromyographic (EMG) activity ratio of the vastus medilais oblique (VMO) to the vastus lateralis muscle (VL). 26 healthy men participated in this study. Training protocole contained 36 sessions of resistance eccenentric and concentric training at the level of 80 % of one repetation maximum (1RM) on leg press machine. Maximal voluntary contraction (MVC) and EMG activity of the VMO and VL muscle recorded before and after resistance eccentric and concentric training. Maxmimal voluntary contraction of quadriceps and EMG activitiy of the VMO and VL muscle significantly increased after training (P <0.05) and depended on the training type (P <0.05). Eccentric training resulted in a greater increase in maximal voluntary contraction and EMG activity of the VMO muscle as compared to concentric training (P <0.05). The increased EMG activity of the VMO to VL muscle play an important role in patella stabilization, and has commonly been used as an effective way to prevent from lateral patella tilt. Thus, it is recommended that eccentric training be included in rehabilation program for lateral patella tilt.
Keywords
Main Subjects
- Cerny K. Vastus medialis oblique/vastus lateralis muscle activity ratios for selected exercises in persons with and without patellofemoral pain syndrome. Phys Ther.
1995 Aug;75(8):672-83. - Chang WD, Huang WS, Lai PT. Muscle Activation of Vastus Medialis Oblique and Vastus Lateralis in Sling-Based Exercises in Patients with Patellofemoral Pain Syndrome: A Cross-Over Study. Evid Based Complement Alternat Med. 2015;2015:740315.
- Chester R, Smith TO, Sweeting D, Dixon J, Wood S, Song F. The relative timing of VMO and VL in the aetiology of anterior knee pain: a systematic review and meta-analysis. BMC Musculoskelet Disord. 2008; 9:64.
- Hedayatpour N, Falla D. Physiological and Neural Adaptations to Eccentric Exercise: Mechanisms and Considerations for Training. Biomed Res Int. 2015; 193741.
- Del Vecchio A, Casolo A, Negro F, Scorcelletti M, Bazzucchi I, Enoka R, Felici F, Farina D. The increase in muscle force after 4 weeks of strength training is mediated by adaptations in motor unit recruitment and rate coding. J Physiol.
2019; 597(7):1873-1887. - Hedayatpour N, Arendt-Nielsen L, Farina D. Motor unit conduction velocity during sustained contraction of the vastus medialis muscle. Exp Brain Res. 2007;
180 (3):509-16. - Fang Y, Siemionow V, Sahgal V, Xiong F, Yue GH. Greater movement-related cortical potential during human eccentric versus concentric muscle contractions.
J Neurophysiol. 2001; 86(4):1764-72. - Moritani T, deVries HA. Neural factors versus hypertrophy in the time course of muscle strength gain. Am J Phys Med. 1979; 58(3):115-30.
- Hedayatpour N, Falla D. Non-uniform muscle adaptations to eccentric exercise and the implications for training and sport. J Electromyogr Kinesiol. 2012; 22(3):329-33.
- Hedayatpour N, Falla D, Arendt-Nielsen L, Farina D. Effect of delayed-onset muscle soreness on muscle recovery after a fatiguing isometric contraction. Scand J Med Sci Sports. 2010; 20(1):145-153.
- Hedayatpour N, Falla D, Arendt-Nielsen L, Farina D. Sensory and electromyographic mapping during delayed-onset muscle soreness. Med Sci Sports Exerc. 2008; 40(2):326-334.
- Semmler JG. Motor unit synchronization and neuromuscular performance. Exerc Sport Sci Rev. 2002; 30(1):8-14.
- Moritani T, Muramatsu S, Muro M. Activity of motor units during concentric and eccentric contractions. Am J Phys Med. 1987; 66(6):338-50.
- Romanò C, Schieppati M. Reflex excitability of human soleus motoneurones during voluntary shortening or lengthening contractions. J Physiol. 1987; 390:271-84.
- Mohammadyari S, Aslani M, Zohrabi A. The Effect of Eight Weeks of Injury Prevention Program on Performance and Musculoskeletal Pain in Imam Ali Military University Students. J Mil Med. 2021; 23(5): 444-455.
- Hedayatpour N, Falla D. Delayed onset of vastii muscle activity in response to rapid postural perturbations following eccentric exercise: a mechanism that underpins knee pain after eccentric exercise? Br J Sports Med. 2014; 48(6):429-34.
- Hedayatpour N, Arendt-Nielsen L, Falla D. Facilitation of quadriceps activation is impaired following eccentric exercise. Scand J Med Sci Sports. 2014; 24(2):355-62.
- Roig M, O'Brien K, Kirk G, Murray R, McKinnon P, Shadgan B, Reid WD. The effects of eccentric versus concentric resistance training on muscle strength and mass in healthy adults: a systematic review with meta-analysis. Br J Sports Med. 2009; 43(8):556-68.
- Farthing JP, Chilibeck PD. The effects of eccentric and concentric training at different velocities on muscle hypertrophy. Eur J Appl Physiol. 2003 Aug;89(6):578-86
- Kaminski TW, Wabbersen CV, Murphy RM. Concentric versus enhanced eccentric hamstring strength training: clinical implications. J Athl Train. 1998 Jul;33(3):
216-21. - Mazani AA, Hamedinia MR, Haghighi AH, Hedayatpour N. The effect of high speed strength training with heavy and low workloads on neuromuscular function and maximal concentric quadriceps strength. J Sports Med Phys Fitness. 2018; 58(4):
428-434. - Franchi MV, Reeves ND, Narici MV. Skeletal Muscle Remodeling in Response to Eccentric vs. Concentric Loading: Morphological, Molecular, and Metabolic Adaptations. Front Physiol. 2017; 8:447.
- Clark DJ, Patten C. Eccentric versus concentric resistance training to enhance neuromuscular activation and walking speed following stroke. Neurorehabil Neural Repair. 2013; 27(4):335-44.
- Aagaard P, Simonsen EB, Andersen JL, Magnusson P, Dyhre-Poulsen P. Neural adaptation to resistance training: changes in evoked V-wave and H-reflex responses. J Appl Physiol (1985). 2002 Jun;92(6):2309-18.
- Patten C, Kamen G, Rowland DM. Adaptations in maximal motor unit discharge rate to strength training in young and older adults. Muscle Nerve. 2001 Apr;24(4):542-50.
- Vila-Chã C, Falla D, Correia MV, Farina D. Adjustments in motor unit properties during fatiguing contractions after training. Med Sci Sports Exerc. 2012 Apr;44(4):616-24.
- Kamen G, Knight CA. Training-related adaptations in motor unit discharge rate in young and older adults. J Gerontol A Biol Sci Med Sci. 2004 Dec;59(12):1334-8.
- Pucci AR, Griffin L, Cafarelli E. Maximal motor unit firing rates during isometric resistance training in men. Exp Physiol. 2006 Jan;91(1):171-8.
- Bagheri T, Abedi B, Hedayatpour N. Effects of 12 weeks concentric and eccentric resistance training on neuromuscular adaptation of quadriceps muscle. Journal of Rehabilitation Sciences & Research. 2020; 7 (4): 161-166.
- Nasrabadi R, Izanloo Z, Sharifnezad A, Hamedinia MR, Hedayatpour N. Muscle fiber conduction velocity of the vastus medilais and lateralis muscle after eccentric exercise induced-muscle damage. J Electromyogr Kinesiol. 2018; 43:118-126.
- Hedayatpour N, Falla D, Arendt-Nielsen L, Vila-Chã C, Farina D. Motor unit conduction velocity during sustained contraction after eccentric exercise. Med Sci Sports Exerc. 2009; 41(10):1927-33.
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