EFFECTS OF LOWER EXTREMITY AND TRUNK KINETIC CHAIN RECRUITMENT ON SERRATUS ANTERIOR MUSCLE ACTIVATION DURING FORWARD PUNCH PLUS EXERCISE ON STABLE AND UNSTABLE SURFACES

2020 ◽  
Vol 15 (1) ◽  
pp. 126-138
Author(s):  
Navpreet Kaur ◽  
Kunal Bhanot ◽  
Germaine Ferreira
Keyword(s):  
Lower Extremity ◽  
Muscle Activation ◽  
Serratus Anterior Muscle ◽  
Kinetic Chain ◽  
Serratus Anterior

scholarly journals Surface electromyographic analysis of the serratus anterior during 1 bench press variations

2019 ◽  
Author(s):  
Kyle L Rogers ◽  
Alex Caravan ◽  
John Scheffey ◽  
Kyle J Boddy
Keyword(s):  
Muscle Strength ◽  
Isometric Contraction ◽  
Surface Electromyography ◽  
Muscle Activation ◽  
Bench Press ◽  
Professional Baseball ◽  
Serratus Anterior Muscle ◽  
Serratus Anterior ◽  
Surface Electrodes ◽  
Electromyographic Analysis

Purpose: Bench press variations that elicit greater serratus anterior muscle activation may be preferable for improving scapula stability and avoiding injury in overhead throwing athletes. Here we compare serratus anterior activity during dumbbell and barbell bench press using surface electromyography (EMG). Methods: Forty college and professional baseball pitchers (men, age 22.6 ± 2.5 years) performed four sets of bench press—light (43 kg) and heavy (61 kg) dumbbell and barbell—with five repetitions each. Each pitcher was instructed in proper technique and rested for 90 seconds between sets. Surface electrodes were used to record serratus anterior activity during isometric contraction (for normalization) and during each set. Results: Dumbbell sets showed significantly greater serratus anterior activation than barbell sets at both weights (weight-normalized mean EMG amplitude, 44.7 versus 38.2; p = .005).Conclusion: This suggests that dumbbell press is preferable to barbell press for building serratus anterior muscle strength.

Serratus anterior muscle activation during knee push-up plus exercise performed on static stable, static unstable, and oscillating unstable surfaces in healthy subjects

2014 ◽  
Vol 15 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Si-hyun Kim ◽  
Oh-yun Kwon ◽  
Su-jung Kim ◽  
Kyue-nam Park ◽  
Sung-dae Choung ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Muscle Activation ◽  
Serratus Anterior Muscle ◽  
Serratus Anterior ◽  
Push Up

scholarly journals Comparison of Lower Extremity Kinematics and Hip Muscle Activation During Rehabilitation Tasks Between Sexes

2010 ◽  
Vol 45 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Maureen K. Dwyer ◽  
Samantha N. Boudreau ◽  
Carl G. Mattacola ◽  
Timothy L. Uhl ◽  
Christian Lattermann
Keyword(s):  
Sex Differences ◽  
Lower Extremity ◽  
Knee Flexion ◽  
Muscle Activation ◽  
Gluteus Maximus ◽  
Rectus Femoris ◽  
Kinetic Chain ◽  
Closed Kinetic Chain ◽  
Hip Flexion ◽  
Rehabilitation Exercises

Abstract Context: Closed kinetic chain exercises are an integral part of rehabilitation programs after lower extremity injury. Sex differences in lower extremity kinematics have been reported during landing and cutting; however, less is known about sex differences in movement patterns and activation of the hip musculature during common lower extremity rehabilitation exercises. Objective: To determine whether lower extremity kinematics and muscle activation levels differ between sexes during closed kinetic chain rehabilitation exercises. Design: Cross-sectional with 1 between-subjects factor (sex) and 1 within-subjects factor (exercise). Setting: Research laboratory. Patients or Other Participants: Participants included 21 women (age  =  23 ± 5.8 years, height  =  167.6 ± 5.1 cm, mass  =  63.7 ± 5.9 kg) and 21 men (age  =  23 ± 4.0 years, height  =  181.4 ± 7.4 cm, mass  =  85.6 ± 16.5 kg). Intervention(s): In 1 testing session, participants performed 3 trials each of single-leg squat, lunge, and step-up-and-over exercises. Main Outcome Measure(s): We recorded the peak joint angles (degrees) of knee flexion and valgus and hip flexion, extension, adduction, and external rotation for each exercise. We also recorded the electromyographic activity of the gluteus maximus, rectus femoris, adductor longus, and bilateral gluteus medius muscles for the concentric and eccentric phases of each exercise. Results: Peak knee flexion angles were smaller and peak hip extension angles were larger for women than for men across all tasks. Peak hip flexion angles during the single-leg squat were smaller for women than for men. Mean root-mean-square amplitudes for the gluteus maximus and rectus femoris muscles in both the concentric and eccentric phases of the 3 exercises were greater for women than for men. Conclusions: Sex differences were observed in sagittal-plane movement patterns during the rehabilitation exercises. Because of the sex differences observed in our study, future researchers need to compare the findings for injured participants by sex to garner a better representation of altered kinematic angles and muscle activation levels due to injury.

scholarly journals A Comparison of Serratus Anterior Muscle Activation During a Wall Slide Exercise and Other Traditional Exercises

2006 ◽  
Vol 36 (12) ◽  
pp. 903-910 ◽  
Author(s):  
Dustin H. Hardwick ◽  
Justin A. Beebe ◽  
Mary Kate McDonnell ◽  
Catherine E. Lang
Keyword(s):  
Muscle Activation ◽  
Serratus Anterior Muscle ◽  
Serratus Anterior

Effects of Scapular Kinetic-Chain Exercise on Muscle Activity in Overhead-Pitching Baseball Players

2020 ◽  
Author(s):  
Ki-Jae SONG ◽  
Jin-Ho YOON ◽  
Jae-Keun OH
Keyword(s):  
Muscle Activity ◽  
Muscle Activation ◽  
Coracoid Process ◽  
Scapular Dyskinesis ◽  
Kinetic Chain ◽  
Dominant Group ◽  
Serratus Anterior ◽  
Baseball Players ◽  
Sports Science ◽  
The Mean

Background: We aimed to demonstrate the effect of 8 wk of scapular kinetic-chain exercise on muscle activity in collegiate baseball players diagnosed with scapular dyskinesis. Methods: The subjects were career baseball players with at least a 7-year career assigned into either a SICK (S; scapular malposition, I; inferior border prominence, C; coracoid process pain, K; scapular dyskinesis; n=7) group or a normal group (n=16), respectively. The groups were further divided into SICK-Dominant, SICKNon-Dominant, Normal-Dominant, and Normal-Non-Dominant to examine the dominant and non-dominant deviation of each group. Twenty-three subjects finally recruited through the Sports Science Institute of Korea National Sport University, Seoul, Korea in Sep 2014. Subjects were only allowed drug treatment for acute injuries during matches or training, and matches, training, and diet were controlled by university dormitory life. Results: There was a significant increase in maximal muscular activation (MA) in elevation motion of NormalDominant upper trapezii (UT), mean MA of SICK-Dominant UT, and mean MA of SICK-Dominant lower trapezii (LT) (P<0.05). In depression motion, the mean MAs of SICK-Dominant, Normal-Dominant, and Normal-Non-Dominant UT were significantly increased (P<0.05). The maximal MA of Normal-Dominant LT was significantly increased (P=0.029), and the SICK-Dominant and Normal-Dominant groups showed significantly higher maximal and mean MAs after exercise compared with the Normal-Non-Dominant group (P<0.05). The maximal MA of SICK-Dominant musculi serratus anterior was significantly lower than NormalDominant at pre-test (P=0.034), and the mean MA of SICK-Dominant musculi serratus anterior differed from Normal-Dominant and Normal-Non-Dominant (P<0.05) before testing, but only from Normal-Non-Dominant after testing (P=0.031). Conclusion: Scapular kinetic-chain exercise improved muscle activation in both overhead-pitching players with scapular dyskinesis and normal players.

scholarly journals Electromyography of 3 Scapular Muscles: A Comparative Analysis of The Cuff Link Device and a Standard Push-Up

2008 ◽  
Vol 43 (5) ◽  
pp. 464-469 ◽  
Author(s):  
W. Steven Tucker ◽  
Brian M. Campbell ◽  
Erik E. Swartz ◽  
Charles W. Armstrong
Keyword(s):  
Upper Extremity ◽  
Muscle Activity ◽  
Muscle Activation ◽  
Type I ◽  
Kinetic Chain ◽  
Serratus Anterior ◽  
Repeated Measures Design ◽  
Closed Kinetic Chain ◽  
Lower Trapezius ◽  
Push Up

Abstract Context: The Cuff Link is a closed kinetic chain rehabilitation apparatus for the upper extremity. Limited research has established its effectiveness to elicit muscle activation of the scapular muscles. Objective: To determine if scapular muscle activation differs in response to 2 upper extremity closed kinetic chain exercises: Cuff Link and standard push-up. Design: A single-group, repeated-measures design. Setting: Controlled laboratory. Patients or Other Participants: Twenty-eight healthy individuals (13 women: age  =  19.69 ± 1.55 years, height  =  167.44 ± 9.52 cm, mass  =  61.00 ± 8.79 kg; 15 men: age  =  22.00 ± 3.91 years, height  =  181.44 ± 6.60 cm, mass  =  82.36 ± 13.23 kg) with no history of shoulder or low back injury volunteered to participate in this study. Intervention(s): Participants performed 10 trials of complete revolutions on the Cuff Link and 10 full–weight-bearing push-ups. We controlled trial velocity and randomized order. Trunk and shoulder positions were normalized to the participant's height. Using surface electromyography, we recorded muscle activity of the serratus anterior, middle trapezius, and lower trapezius. Rectified and smoothed electromyography data for the serratus anterior, middle trapezius, and lower trapezius were normalized as a percentage of the maximal voluntary isometric contractions (%MVIC). Main Outcome Measure(s): Mean muscle activity of the serratus anterior, middle trapezius, and lower trapezius. We used paired-samples t tests to analyze the mean data for each condition. The α level was adjusted to .016 to avoid a type I error. Results: Middle trapezius %MVIC was greater during push-ups (27.01 ± 20.40%) than during use of the Cuff Link (11.49 ± 9.46%) (P  =  .001). Lower trapezius %MVIC was greater during push-ups (36.07 ± 18.99%) than during use of the Cuff Link (16.29 ± 8.64%) (P  =  .001). There was no difference in %MVIC for the serratus anterior between conditions. Conclusions: The push-up demonstrated greater middle trapezius and lower trapezius activation levels compared with the Cuff Link. However, the push-up had a high participant failure rate. Because serratus anterior activation levels were similar, the Cuff Link may be an appropriate alternative for individuals lacking the upper body strength to perform a push-up.

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