scholarly journals The Effect of Progressive Lumbar Stability Exercise on the Transversus Abdominis Muscle Thickness and Lower extremity muscle Fatigue Index in Soccer Players

2012 ◽  
Vol 22 (3) ◽  
pp. 349-356 ◽  
Author(s):  
Joon-Hee Lee ◽  
Seung-Kyu Park ◽  
Jeong-Il Kang ◽  
Dae-Jung Yang ◽  
Je-Ho Kim ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Muscle Fatigue ◽  
Muscle Thickness ◽  
Transversus Abdominis ◽  
Soccer Players ◽  
Fatigue Index ◽  
Lower Extremity Muscle ◽  
Transversus Abdominis Muscle

Comparison of Muscle Activity and Ultrasound Response of Lower Extremity Muscles During Treadmill and Track Running

2021 ◽  
Vol 11 (8) ◽  
pp. 2091-2096
Author(s):  
Chenghui Lin ◽  
Shudong Li ◽  
Yining Lu ◽  
Huw Wiltshire
Keyword(s):  
Lower Extremity ◽  
Muscle Thickness ◽  
Pennation Angle ◽  
Treadmill Running ◽  
Medial Gastrocnemius ◽  
Median Frequency ◽  
Muscle Morphology ◽  
Change Rate ◽  
Lower Extremity Muscle ◽  
Significant Difference

Purpose: The purpose of this study was to compare the changes in lower extremity muscle morphology and electromyography (EMG) signals during treadmill running (TR) and plastic track running (PR). Methods: A total of 10 healthy male runners aged 22.5±1.3 years, height: 175.5±4.5 cm; weight: 71.9±2.7 kg; BMI: 22.1±1.1 volunteered to participate in this study. Muscle morphology data were collected by a portable ultrasound scanner before and after running. Median frequency (MF), mean power frequency (MPF) and root mean square (RMS) were monitored during TR and PR. Results: The results indicated that muscle thickness and pennation angle have increased after running. The muscle thickness after PR showed significantly higher than TR in tested muscle except tibialis anterior (TA) and medial gastrocnemius (MG). In contrast, only the pennation angle of TA and lateral gastrocnemius (LG) after PR was significantly different from that after TR (P <0.001, P = 0.002). The most significant difference in the change rate of muscle thickness was found at TA. In addition, TA and MG showed significantly higher change rate of the pennation angle after TR than that after PR. Both of MF and MPF showed a downward trend after TR and PR. It could discover that the MF and MPF of LG during TR showed a significantly lower than that during PR both in two phases (P =0.001, P <0.001). However, in the last 5 minutes, MF and MPF of MQ during PR were smaller than that during PR (P = 0.001, P = 0.015). Furthermore, MF of RF during TR showed significantly different from that during PR (P = 0.017). From the point of RMS, in the first five minutes, the RMS of medical quadriceps (MQ), lateral quadriceps (LQ), hamstring muscles (HM) and MG during TR was significantly higher than that of PR (P <0.05). In addition, the RMS of all tested muscles after TR was significantly higher than after PR during the last 5 minutes (P <0.05). Conclusions: The current study indicated that TR and PR would cause different effects to lower extremity muscle morphology. In addition, the EMG signals based on running surfaces are also unconformity. Compared with the plastic track, the treadmill will bring more stimulation to the lower extremity muscles. The preliminary findings provide further insights into the rationality of runners’ choice of the running surface.

scholarly journals The Effect of Lower Extremity Muscle Fatigue on Dynamic Postural Control Analyzed by Electromyography

2016 ◽  
Vol 6 (1) ◽  
pp. 37-50 ◽  
Author(s):  
Majid Fatahi ◽  
Gholam Ali Ghasemi ◽  
Yosef Mongashti Joni ◽  
Vahid Zolaktaf ◽  
Faraj Fatahi ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Postural Control ◽  
Muscle Fatigue ◽  
Lower Extremity Muscle

Soccer Footedness and Between-Limbs Muscle Strength: Systematic Review and Meta-Analysis

2019 ◽  
Vol 14 (5) ◽  
pp. 551-562 ◽  
Author(s):  
Matthew D. DeLang ◽  
Mehdi Rouissi ◽  
Nicola L. Bragazzi ◽  
Karim Chamari ◽  
Paul A. Salamh
Keyword(s):  
Muscle Strength ◽  
Lower Extremity ◽  
Meta Analysis ◽  
Soccer Players ◽  
Future Research ◽  
Isokinetic Dynamometry ◽  
Cross Sectional ◽  
Lower Extremity Muscle ◽  
Meta Analyses ◽  
Limb Dominance

Purpose: Limb dominance and consequent between-limbs muscle strength in soccer players should be explored to determine a standard musculoskeletal profile to maintain and establish during screening protocols and postinjury rehabilitation. The primary aim of this review was to identify dominant- vs non-dominant-lower-extremity muscle-strength characteristics of healthy soccer players, with secondary aims to consider available between-limbs outcome measures and directions for future research. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. Five electronic databases were used for study identification with guidance from a medical librarian. Inclusion criteria consisted of studies employing a cross-sectional design assessing soccer players of all ages, genders, and levels of play that identified limb dominance and associated lower-extremity muscle strength as a main purpose of the experiment. Results: The literature search identified 3471 articles. After screening titles, abstracts, and full texts, 17 articles were included in the review. Peak torques and hamstring-to-quadriceps ratios via isokinetic dynamometry were commonly used, and subsequent meta-analyses were conducted to yield remarkable between-limbs symmetry. Additional results of individual studies also demonstrate symmetry, except 1 article of velocity-dependent measures that reported greater strength in the dominant limb. Conclusions: In soccer, between-limbs muscle strength measured by maximal isokinetic dynamometry demonstrates symmetry across ages, genders, and levels of play. Future testing using alternative measures that more specifically replicate the movement demands of soccer players may further classify between-limbs characteristics.

scholarly journals The Effects of Whole Body Vibration Treatments on Lower Body Muscular Activity in Well-Trained Athletes from Different Sports Branches

2018 ◽  
Vol 6 (9a) ◽  
pp. 43
Author(s):  
İlbilge Özsu ◽  
Hayri Ertan ◽  
Deniz Şimşek ◽  
Bahtiyar Özçaldiran ◽  
Cem Kurt
Keyword(s):  
Lower Extremity ◽  
Muscle Activation ◽  
Vastus Lateralis ◽  
Whole Body Vibration ◽  
Soccer Players ◽  
Whole Body ◽  
Basketball Players ◽  
Body Vibration ◽  
Lower Extremity Muscle ◽  
40 Hz

A limited number of acute whole body vibration (WBV) studies have investigated the effects of WBV treatments which were applied with different vibration frequencies and amplitude combinations on lower extremity muscle activation of well-trained athletes from different sports branches. To compare the effects of WBV on lower extremity muscle activation via Surface Electromyography (sEMG) of well-trained athletes from different sports branches (soccer, basketball and swimming) during static and dynamic squat exercises. sEMG activities of Tibialis Anterior (TA), Gastrocnemius Medialis (GM), Vastus Medialis (VM), Rectus Femoris (RF), Vastus Lateralis (VL) and Biceps Femoris (BF) muscles of 7 male soccer players, 7 male basketball players, and 6 male swimmers were recorded during WBV applied in static squat and dynamic squat positions with different frequencies (30-35-40 Hz) and amplitude (2-4 mm) combinations separated from each other by 5 min passive rest periods. Each combination was applied for 30 sec. The highest muscle activation was determined in TA of the swimmers compared to soccer players during static squat with 4mm-30Hz WBV application (p=0.027). The lowest muscle activation was also determined in VL of the swimmers compared to soccer players during static squat with 2mm-40Hz WBV (p=0.049). During dynamic squat with 4mm-40Hz WBV, the highest muscle activity was determined in RF of the basketball players compared to swimmers (p=0.030). However, dynamic squat with 2mm-40Hz WBV application gave rise to the lowest muscle activation in VL of the basketball players compared to soccer players (p=0.042). Well-trained athletes from different sports branches demonstrated different neuromuscular responses to acute WBV treatments. WBV during dynamic squatting which was applied with 4mm-40 Hz may be more beneficial in enhancing neuromuscular performance acutely for well-trained male athletes since it resulted in higher levels of muscular activation responses according to the present study.

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