Effect of Different Jab Techniques on Peak Activation of Upper-Body Muscles in Youth Boxers

Abstract

The study purpose was to analyse the peak EMG at five upper-body muscles during four different jab techniques in youth boxers.
 Materials and methods. Male youth national-level boxers (n=7) were assessed for peak electromyography (EMG) of anterior deltoid (AD), biceps brachii (BB), triceps brachii (TB), flexor carpi radialis (FCR), and upper trapezius (UT) while performing four jab techniques: long-range targeting head (LRH), long-range targeting body (LRB), medium-range targeting head (MRH), and medium-range targeting body (MRB).
 Results. The LRH induced the highest EMG for AD (2092.9±411.9) and BB (1392.0±687.3). The MRB induced the highest EMG for the FCR (1337.16±538.28), TB (1589.3±600.3), and UT (1221.2±507.5). However, between jab techniques, only the AD showed a significant (p<0.001) different EMG. Specifically, the LRH induced greater AD EMG compared to LRB (157.5 [p<0.001]), MRH (411.0 [p=0.003]), and MRB (398.3 [p=0.010]). Further, the LRB induced greater AD EMG compared to MRH (253.5 [p=0.024]) and MRB (240.8 [p=0.049]). The MRH and MRB (-12.7 [p=0.911]) induced similar AD EMG.
 Conclusions. Peak EMG at five upper-body muscles varies between jab techniques. However, the differences seem relatively small, except for the AD muscle, with a descending pattern of peak EMG for the LRH > LRB > MRH and MRB jab techniques.

Electromyographical Analysis of The Thigh Muscle During Four Yogasana

“…Standard deviations and means were computed. Using the Shapiro-Wilk test and the Mauchly's test of sphericity, the assumptions of data normality and sphericity were confirmed (Das et al, 2023;S. Kumar et al, 2022;Sharma & Prasad, 2023).…”

“…The young participants gave their vocal approval. According to the Declaration of Helsinki, the study was carried out in the sports biomechanics lab of the Lakshmibai National Institute of Physical Education in Gwalior, India (S. Kumar et al, 2022) . The Department of Sports Biomechanics, Lakshmibai National Institute of Physical Education, Gwalior, India, departmental research committee (DRC) authorized the work as a component of a doctoral study, which was registered with the number (No, Academic /Ph.D.…”