scholarly journals Comparison of muscle activity, strength and balance, before and after a 6-month training using the FIFA11+ program (part 2)

2019 ◽  
Author(s):  
Takeshi Oshima ◽  
Junsuke Nakase ◽  
Anri Inaki ◽  
Takafumi Mochizuki ◽  
Yasushi Takata ◽  
...  
Keyword(s):  
Lower Limb ◽  
Sports Injuries ◽  
Dynamic Balance ◽  
Financial Burden ◽  
Erector Spinae ◽  
Knee Flexor ◽  
Lower Limb Muscles ◽  
Standardized Uptake Values ◽  
Limb Muscles ◽  
Before And After

AbstractPurposeSports injuries can significantly impact an athlete’s career, as well as impose a high financial burden on teams. Therefore, the prevention of sports injuries is an essential aspect of sports medicine. To evaluate the effects of a 6-month training period, using part 2 of the FIFA11+, on the activation and strength of core and lower limb muscles, and on static and dynamic balance performance.Materials and MethodsEight college male soccer players, 20.4±0.5 years old, completed the FIFA11+ program (part 2) at least 3x per week for 6 months. The following variables were measured, before and after the 6-month training program: activity of more than 30 muscles (with a focus on core and lower limb muscles), measured using the standardized uptake values of 18F-fluorodeoxyglucose (FDG) on positron emission tomography (PET-CT); isokinetic strength of the knee flexor and extensor and hip abductor muscles, measured at 60°/s; static balance over a 60-s period, measured using a Gravicorder; and dynamic balance, measured using the Star Excursion Balance Test.ResultsTraining improved activity levels of core (obliquus externus abdominis and erector spinae) and lower limb (tibialis anterior of the both legs) muscles (p≤0.03), corrected the between-limb difference in activation of the semimembranosus and improved dynamic balance, with a greater training effect on the non-dominant limb (p≤0.02). Training also improved knee flexor force of the non-dominant lower limb (p=0.02).ConclusionRoutine performance of the FIFA11+ (part 2) program can improve activation of core and lower limb muscles, with a concomitant improvement in dynamic balance.

scholarly journals Comparison of muscle activity, strength, and balance, before and after a 6-month training using the FIFA11+ program (part 2)

2019 ◽  
Vol 28 (1) ◽  
pp. 230949901989154
Author(s):  
Takeshi Oshima ◽  
Junsuke Nakase ◽  
Anri Inaki ◽  
Takafumi Mochizuki ◽  
Yasushi Takata ◽  
...  
Keyword(s):  
Lower Limb ◽  
Dynamic Balance ◽  
Case Series ◽  
Erector Spinae ◽  
Level Of Evidence ◽  
Knee Flexor ◽  
Lower Limb Muscles ◽  
Standardized Uptake Values ◽  
Limb Muscles ◽  
Before And After

Background: Sports injury prevention training programs have been reported to be effective in decreasing the incidence of injuries. The aim of this study was to evaluate the effects of a 6-month training period, using part 2 of the FIFA11+ program (the Fédération Internationale de Football), on the activation and strength of core and lower limb muscles and on static and dynamic balance performance. Study Design: Case series; level of evidence, 4. Methods: Eight college male soccer players, aged mean 20.4 ± 0.5 years old, completed the FIFA11+ program at least three times per week for 6 months. The following variables were measured both before and after the 6-month training program: activities of more than 30 muscles (core and lower limb muscles), measured using the standardized uptake values of 18F-fluorodeoxyglucose on positron emission tomography; isokinetic strength of the knee flexor and extensor and hip abductor muscles, measured at 60° s−1; static balance over a 60-s period, measured using a gravicorder; and dynamic balance, measured using the star excursion balance test. Results: Training improved the activity levels of core (obliquus externus abdominis and erector spinae) and lower limb (tibialis anterior) muscles ( p ≤ 0.03), corrected the between-limb difference in the activation of the semimembranosus and improved dynamic balance, with a greater training effect on the nondominant limb ( p ≤ 0.02). Training also improved the knee flexor force of the nondominant lower limb ( p = 0.02). Conclusion: Routine performance of the FIFA11+ program can improve the activation of core and lower limb muscles, with a concomitant improvement in dynamic balance. These improvements could be beneficial in lowering the risk of sports-related injuries.

Deficits in anticipatory inhibition of postural muscle activity associated with load release while standing in individuals with spastic diplegic cerebral palsy

2013 ◽  
Vol 109 (8) ◽  
pp. 1996-2006 ◽  
Author(s):  
Hidehito Tomita ◽  
Yoshiki Fukaya ◽  
Kenji Totsuka ◽  
Yuri Tsukahara
Keyword(s):  
Cerebral Palsy ◽  
Lower Limb ◽  
Muscle Activity ◽  
Erector Spinae ◽  
Lower Limbs ◽  
Control Group ◽  
Lower Limb Muscles ◽  
Limb Muscles ◽  
Postural Muscle ◽  
Load Release

This study aimed to determine whether individuals with spastic diplegic cerebral palsy (SDCP) have deficits in anticipatory inhibition of postural muscle activity. Nine individuals with SDCP (SDCP group, 3 female and 6 male, 13–24 yr of age) and nine age- and sex-matched individuals without disability (control group) participated in this study. Participants stood on a force platform, which was used to measure the position of the center of pressure (CoP), while holding a light or heavy load in front of their bodies. They then released the load by abducting both shoulders. Surface electromyograms were recorded from the rectus abdominis, erector spinae (ES), rectus femoris (RF), medial hamstring (MH), tibialis anterior (TA), and gastrocnemius (GcM) muscles. In the control group, anticipatory inhibition before load release and load-related modulation of the inhibition were observed in all the dorsal muscles recorded (ES, MH, and GcM). In the SDCP group, similar results were obtained in the trunk muscle (ES) but not in the lower limb muscles (MH and GcM), although individual differences were seen, especially in MH. Anticipatory activation of the ventral lower limb muscles (RF and TA) and load-related modulation of the activation were observed in both participant groups. CoP path length during load release was longer in the SDCP group than in the control group. The present findings suggest that individuals with SDCP exhibit deficits in anticipatory inhibition of postural muscles at the dorsal part of the lower limbs, which is likely to result in a larger disturbance of postural equilibrium.

scholarly journals Asymmetry and changes in the neuromuscular profile of short-track athletes as a result of strength training

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261265
Author(s):  
Paweł Pakosz ◽  
Anna Lukanova-Jakubowska ◽  
Edyta Łuszczki ◽  
Mariusz Gnoiński ◽  
Oscar García-García
Keyword(s):  
Strength Training ◽  
Lower Limb ◽  
Female Athletes ◽  
Lower Limbs ◽  
Lower Limb Muscles ◽  
Limb Muscles ◽  
Before And After ◽  
Monthly Period ◽  
Track Athletes ◽  
The Right

Background The purpose of this study was to identify the biomedical signals of short-track athletes by evaluating the effects of monthly strength training on changes in their neuromuscular profile, strength, and power parameters of the lower limb muscles. Muscle asymmetry, which can cause a risk of injury, was also evaluated. Methods and results This study involved female athletes, age 18.8 ± 2.7 years, with a height of 162 ± 2.4 cm, and weight of 55.9 ± 3.9 kg. Before and after the monthly preparatory period prior to the season, strength measurements were assessed through the Swift SpeedMat platform, and reactivity of the lower limb muscles was assessed with tensiomyography (TMG). The athletes were also tested before and after the recovery training period. In the test after strength training, all average countermovement jump (CMJ) results improved. Flight time showed an increase with a moderate to large effect, using both legs (5.21%). Among the TMG parameters, time contraction (Tc) changed globally with a decrease (-5.20%). Changes in the results of the test after recovery training were most often not significant. Conclusion A monthly period of strength training changes the neuromuscular profile of short-track female athletes, with no significant differences between the right and left lower limbs.

Frequency response of vestibular reflexes in neck, back, and lower limb muscles

2013 ◽  
Vol 110 (8) ◽  
pp. 1869-1881 ◽  
Author(s):  
Patrick A. Forbes ◽  
Christopher J. Dakin ◽  
Alistair N. Vardy ◽  
Riender Happee ◽  
Gunter P. Siegmund ◽  
...  
Keyword(s):  
Motor Unit ◽  
Lower Limb ◽  
Dynamic Range ◽  
Erector Spinae ◽  
Medial Gastrocnemius ◽  
Neck Muscle ◽  
Vestibular Reflexes ◽  
Frequency Responses ◽  
Lower Limb Muscles ◽  
Limb Muscles

Vestibular pathways form short-latency disynaptic connections with neck motoneurons, whereas they form longer-latency disynaptic and polysynaptic connections with lower limb motoneurons. We quantified frequency responses of vestibular reflexes in neck, back, and lower limb muscles to explain between-muscle differences. Two hypotheses were evaluated: 1) that muscle-specific motor-unit properties influence the bandwidth of vestibular reflexes; and 2) that frequency responses of vestibular reflexes differ between neck, back, and lower limb muscles because of neural filtering. Subjects were exposed to electrical vestibular stimuli over bandwidths of 0–25 and 0–75 Hz while recording activity in sternocleidomastoid, splenius capitis, erector spinae, soleus, and medial gastrocnemius muscles. Coherence between stimulus and muscle activity revealed markedly larger vestibular reflex bandwidths in neck muscles (0–70 Hz) than back (0–15 Hz) or lower limb muscles (0–20 Hz). In addition, vestibular reflexes in back and lower limb muscles undergo low-pass filtering compared with neck-muscle responses, which span a broader dynamic range. These results suggest that the wider bandwidth of head-neck biomechanics requires a vestibular influence on neck-muscle activation across a larger dynamic range than lower limb muscles. A computational model of vestibular afferents and a motoneuron pool indicates that motor-unit properties are not primary contributors to the bandwidth filtering of vestibular reflexes in different muscles. Instead, our experimental findings suggest that pathway-dependent neural filtering, not captured in our model, contributes to these muscle-specific responses. Furthermore, gain-phase discontinuities in the neck-muscle vestibular reflexes provide evidence of destructive interaction between different reflex components, likely via indirect vestibular-motor pathways.

scholarly journals Assessment of core and lower limb muscles for static/dynamic balance in the older people: An ultrasonographic study

2019 ◽  
Vol 48 (6) ◽  
pp. 881-887 ◽  
Author(s):  
Özden Özkal ◽  
Murat Kara ◽  
Semra Topuz ◽  
Bayram Kaymak ◽  
Aysun Bakı ◽  
...  
Keyword(s):  
Young Adults ◽  
Older People ◽  
Grip Strength ◽  
Lower Limb ◽  
Tibialis Anterior ◽  
Dynamic Balance ◽  
Diaphragm Muscle ◽  
Clinical Trial Registration ◽  
Lower Limb Muscles ◽  
Limb Muscles

Abstract Background sufficient research has not been conducted to determine the role of core and lower limb muscles in providing balance in older people. Objective to investigate the relationships between the thickness of core/lower limb muscles and static/dynamic balance in older people. Methods the study included a total of 68 older people (≥ 65 years) and 68 gender-matched young subjects, aged 20–40 years. Balance, knee proprioception sense, regional and total muscle measurements and grip strength were assessed using a force platform system, isokinetic dynamometer, ultrasound imaging, bioelectrical impedance analysis and Jamar dynamometer, respectively. Results all the static (postural sway) parameters were higher and all the dynamic (limits of stability) parameters were lower in the older adults compared to the young adults (all P<0.05). The diaphragm was thicker and all the other muscles (except for multifidus and tibialis anterior) were thinner in the older group (all P<0.05). A higher error of knee proprioception sense was determined at 45 and 70 degrees in the older subjects (both P<0.001). According to the multivariate analyses, significant predictors for balance were age, gender, height, and rectus femoris, vastus intermedius and diaphragm muscle thicknesses in the older group, and age, gender, height, grip strength, and rectus abdominis, internal oblique, longissimus, tibialis anterior and soleus muscle thicknesses in the young group (all P<0.05). Conclusions the thickness of core/lower limb muscles are important determinants of balance in both older and young adults. These findings could provide a strong rationale for strengthening specific (abdominal and quadriceps) muscles to prevent falls and regional sarcopenia, and to improve posture/balance in the older population. Clinical trial registration number NCT03791047 Ethics committee approval Hacettepe University Non-interventional Clinical Research Ethics Board. Decision number:GO 18/506-39

scholarly journals Effect of Foot Orthoses on the Timing of Lower Limb Muscles Activity during Walking in Older Adults

2021 ◽  
Author(s):  
Arefeh Mokhtari MalekAbadi ◽  
Amirali Jafarnezhadgero
Keyword(s):  
Older Adults ◽  
Lower Limb ◽  
Vastus Lateralis ◽  
Gluteus Medius ◽  
Erector Spinae ◽  
Medial Gastrocnemius ◽  
Female Group ◽  
Vastus Medialis ◽  
Lower Limb Muscles ◽  
Limb Muscles

Introduction: As a person gets older, their gait patterns change and their ability to walk decreases. Orthoses are used to relieve musculoskeletal disorders, skeletal problems, disabilities, etc. Therefore, the aim of this study was to investigate the effect of orthoses on timing of lower limb muscles in the older adults during gait. Methods: The present study was a clinical trial. 14 females (with average age of 60.50±4.40 years) and 14 males (with average age of 63.35±5.55 years) were selected with available sampling, voluntarily participated in this research. Eight electrodes were placed on the selected muscles (tibialis anterior, gastrocnemius medial, vastus medialis, vastus lateralis, biceps femoris, semitendinosus, gluteus medius, erector spinae) to record electrical activity during the gait with and without orthoses. To analyze the data SPSS software (version 16), and a repeated analysis of variance test was used. The significance levels in all tests were considered to be 0.05. Results: The main effects of orthoses and the interaction effects of orthoses and sex for the onset of selected muscles activities did not show any significant differences (P>0.05). The effect of sex for the onset of activities in medial gastrocnemius (P=0.007), vastus medialis (P=0.002), vastus lateralis (P=0.027), semitendinosus (P=0.004), gluteus medius (P=0.030), and erector spinae (P=0.039) muscles was significant, so that the onset of muscle activity in the female group was earlier than in the male group. Conclusion: Orthoses showed no improvement on onset of selected muscles activities, although significant differences were observed between the male and female groups.

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