scholarly journals Changes in Muscle Activity Imbalance of the Lower Limbs Following 3 Weeks of Supplementary Body-Weight Unilateral Training

2021 ◽  
Vol 11 (4) ◽  
pp. 1494
Author(s):  
Sylwia Mrzygłód ◽  
Przemysław Pietraszewski ◽  
Artur Golas ◽  
Jakub Jarosz ◽  
Aleksander Matusiński ◽  
...  
Keyword(s):  
Body Weight ◽  
Training Program ◽  
Muscle Activity ◽  
Repeated Measures ◽  
High Speed ◽  
Weight Training ◽  
Lower Limbs ◽  
Soccer Players ◽  
Training Experience ◽  
Post Intervention

This study examined the effects of a short-term supplementary body-weight training program on changes in the muscle activity imbalance of the lower limbs during high-speed running in soccer players. Fifteen professional male soccer players took part in the study (age: 25 ± 5 years, body mass: 79.2 ± 10.8 kg, stature: 177 ± 10 cm, training experience: 12 ± 5 years). The evaluations of lower limb muscle activity imbalance via surface electromyography (sEMG) were performed twice (pre- and post-intervention), at a three-week interval. The sEMG was measured bilaterally from the area of quadriceps (Q), hamstrings (H), and gluteal muscles (G) during high-speed running at 18 km/h using sEMG shorts. Between measurements, the athletes performed the supplementary body-weight program of the lower limbs 4 times a week for 3 weeks. The training included six body-weight exercises performed unilaterally. The load progression included an additional set of each exercise in successive weeks of the experiment. The two-way repeated-measures ANOVA indicated a statistically significant main interaction for time × muscle (p = 0.006; F = 6.948; η2 = 0.332). The post-hoc analysis for the interaction effect of time × muscle showed a statistically significant decrease in muscle imbalance for the post-intervention compared to the pre-intervention for the H (p < 0.001; ES = 1.32), G (p = 0.002; ES = 0.92), and T (p < 0.001; ES = 1.54), but not for Q (p = 0.56; ES = 0.14). Moreover, there was a statistically significant greater imbalance between the H, G, and T muscles versus Q (p = 0.043, ES = 1.15; p = 0.006, ES = 1.57; p = 0.001, ES = 1.69, respectively) for the values recorded pre-intervention. Changes in muscle activity after 3 weeks of sports-specific movement patterns were statistically significant. For the gluteal (G) and hamstring (H), the imbalance between the limbs decreased significantly (p = 0.01). The imbalance in the quadriceps muscles (Q), with respect to each limb, did not decrease significantly (p = 0.82) following the training intervention. Conclusions: The results of this study indicate that in-season soccer training supplemented with a body-weight training program successfully decreases gluteal and hamstring imbalance between limbs after 3 weeks of training.

scholarly journals Effects of Different Periodization Models in Strength Training on Physical and Motor Skills during 24 Weeks of Training

2021 ◽  
Vol 90 (2) ◽  
pp. 118-133
Author(s):  
Déborah de Araújo Farias ◽  
Michel Moraes Gonçalves ◽  
Sérgio Eduardo Nassar ◽  
Euzébio de Oliveira
Keyword(s):  
Longitudinal Study ◽  
Strength Training ◽  
Motor Skills ◽  
Repeated Measures ◽  
Progressive Increase ◽  
Lower Limbs ◽  
Training Experience ◽  
Post Intervention ◽  
Convenience Sample ◽  
Endurance Strength

Introduction: Periodization is the accurate manipulation of methodological variables of strength training (ST) to provide a progressive increase in the different manifestations of muscle strength. The most used models in ST are linear and undulatory periodization. Objective: Evaluate the effects of 24 weeks of training by applying three different models of ST periodization: Linear Periodization (LP), Weekly Undulating Periodization (WUP) and Daily Undulating Periodization (DUP) on: upper limb (UL) strength (submaximal and endurance), submaximal strength and power of the lower limbs (LL) and on other components of physical fitness (flexibility, agility and abdominal endurance strength). Methods: Experimental, longitudinal study, with a convenience sample, in which 29 people of both sexes participated, randomly allocated to the groups. Tests were performed pre- and post-intervention. ANOVA (two-way) of repeated measures was performed. Results: There was a significant increase in submaximal strength of the UL in the three periodization models: LP (p<0.001), the WUP (p=0.002) and DUP (p=0.001). There was also a significant increase in submaximal strength of the LL with LP (p=0.002), WUP (p<0.001) and with DUP (p=0.001). No significant intergroup differences were found in any test and time. Conclusion: In individuals without training experience, 24 weeks of TF provided gains in different manifestations of strength, regardless of the periodization model (LP, WUP or DUP). PL and WUP seem to be better at providing LL power gains in the horizontal jump.

Flywheel or free weight training for improvement of lower limbs strength?

2021 ◽  
pp. 1-7
Author(s):  
S. Arsenis ◽  
A. Gioftsidou ◽  
I. Smilios ◽  
P. Malliou ◽  
A. Chatzinikolaou ◽  
...  
Keyword(s):  
Training Program ◽  
Weight Training ◽  
Training Group ◽  
Lower Limbs ◽  
Soccer Players ◽  
Knee Extensors ◽  
Control Group ◽  
Training Methods ◽  
Free Weight ◽  
Angular Velocities

BACKROUND: New training methods are constantly used to improve the ability of skeletal muscles to develop strength. OBJECTIVE: The aim of the present study was to investigate the effect of half-squat training with free weights and flywheel device on isokinetic knee muscle strength for well-trained amateur soccer players. METHODS: Forty eight players were randomly divided into three groups (n= 16 each): Desmotech Training group (DT), Free Weight Training group (WT) and one Control Group (CON). DT and WT performed an eight-week half-squat training program, with two sessions per week. The DT group performed training with a flywheel device. Isokinetic concentric-eccentric strength assessments of the knee extensors-flexors muscle groups were performed at different angular velocities (60, 180 and 240∘/s). RESULTS: The eight-week training program improved all the isokinetic joint moment indicators examined in the DT and WT groups (p< 0.01). The DT group achieved higher performances at all the isokinetic parameters examined, however, without statistically significant differences to the WT group. CONCLUSIONS: Flywheel-based exercise is an effective training method and is suggested to be used to strengthen the lower limbs of soccer players.

scholarly journals Improvement of Physical Performance Following a 6 Week Change-of-Direction Training Program in Elite Youth Soccer Players of Different Maturity Levels

2021 ◽  
Vol 12 ◽  
Author(s):  
Dorsaf Sariati ◽  
Raouf Hammami ◽  
Hassane Zouhal ◽  
Cain C. T. Clark ◽  
Ammar Nebigh ◽  
...  
Keyword(s):  
Training Program ◽  
Effect Size ◽  
Soccer Players ◽  
Height Velocity ◽  
Adherence Rate ◽  
Peak Height Velocity ◽  
Post Intervention ◽  
Significant Group ◽  
Youth Soccer ◽  
Change Of Direction

Background: Change-of-direction (CoD) is a necessary physical ability of a field sport and may vary in youth players according to their maturation status.Objectives: The aim of this study is: to compare the effectiveness of a 6-week CoD training intervention on dynamic balance (CS-YBT), horizontal jump (5JT), speed (10 and 30-m linear sprint times), CoD with (15 m-CoD + B) and without (15 m-CoD) the ball, in youth male soccer players at different levels of maturity [pre- and post-peak height velocity (PHV)].Materials and Methods: Thirty elite male youth soccer players aged 10–17 years from the Tunisian first division participated in this study. The players were divided into pre- (G1, n = 15) and post-PHV (G2, n = 15) groups. Both groups completed a similar 6-week training program with two sessions per week of four CoD exercises. All players completed the following tests before and after intervention: CS-YBT; 5 JT; 10, 30, and 15 m-CoD; and 15 m-CoD + B, and data were analyzed using ANCOVA.Results: All 30 players completed the study according to the study design and methodology. Adherence rate was 100% across all groups, and no training or test-related injuries were reported. Pre-PHV and post-PHV groups showed significant amelioration post-intervention for all dependent variables (after test &gt; before test; p &lt; 0.01, d = 0.09–1.51). ANOVA revealed a significant group × time interaction only for CS-YBT (F = 4.45; p &lt; 0.04; η2 = 0.14), 5JT (F = 6.39; p &lt; 0.02; η2 = 0.18), and 15 m-CoD (F = 7.88; p &lt; 0.01; η2 = 0.22). CS-YBT, 5JT, and 15 m-CoD improved significantly in the post-PHV group (+ 4.56%, effect size = 1.51; + 4.51%, effect size = 1.05; and -3.08%, effect size = 0.51, respectively), more than the pre-PHV group (+ 2.77%, effect size = 0.85; + 2.91%, effect size = 0.54; and -1.56%, effect size = 0.20, respectively).Conclusion: The CoD training program improved balance, horizontal jump, and CoD without the ball in male preadolescent and adolescent soccer players, and this improvement was greater in the post-PHV players. The maturity status of the athletes should be considered when programming CoD training for soccer players.

INFLUENCE OF A 6-WEEK MIXED BALLISTIC-PLYOMETRIC TRAINING ON THE LEVEL OF SELECTED STRENGTH AND SPEED INDICES OF THE LOWER LIMBS IN YOUNG FOOTBALL PLAYERS

2019 ◽  
Vol 4 ◽  
pp. 198
Author(s):  
Marcin Krawczyk ◽  
Mariusz Pociecha
Keyword(s):  
Training Program ◽  
Motor Skills ◽  
Muscle Power ◽  
Anaerobic Power ◽  
Lower Limbs ◽  
Soccer Players ◽  
Training Methods ◽  
Plyometric Training ◽  
Cohen’S D ◽  
Cohen's D

The development of muscle power should be taken into account in soccer training. The aim of this study was to evaluate the influence of a 6-week of mixed power training on the level of the motor skills of the lower limbs of young soccer players. The training was conducted during the starting period. The study included twelve 16-18-year-old players who regularly participated in specific soccer trainings and played in regional competitions. Their basic anthropometric features were measured. The assessment of the power of the lower limbs was carried out using two jump tests: CMJ and SJ. The maximum anaerobic power was calculated and was expressed in relation to body weight and lean body mass. In addition, Drop Jump tests were performed from three different heights on the basis of which RSI reactive strength index were calculated. On completion of the training program an increase in the level of the results of all the tests was observed: SJ (cm) (cohen's d: 0.43), CMJ (cm) (cohen's d: 0.33), SJPmax (W/kg) (cohen's d: 0.43), CMJPmax (W/kg) (cohen's d: 0.30), SJPmax (W/LBMkg) (cohen's d): 0,57), CMJPmax (W/LBMkg) (cohen's d: 0,44), RSI 0,2 (cohen's d: 0,59), RSI 0,3 (cohen's d: 0,45), RSI 0,4 (cohen's d: 0,58). An additional six-week ballistic-plyometric training program, used as a supplement to the basic training plan during the start period, resulted in an increase in the motor skills of the lower limbs of young soccer players. The application of combined ballistic and plyometric training methods helps to improve the strength and speed potential of young soccer players. 

The impact of strength training on the improvement of jumping ability and selected power parameters of the lower limbs in soccer players

2021 ◽  
Vol 13 (1) ◽  
pp. 83-90
Author(s):  
PATRICIA FISCHEROVA ◽  
MAGDALENA NITYCHORUK ◽  
WOJCIECH SMOLKA ◽  
MARCIN ZAK ◽  
ARTUR GOLAS ◽  
...  
Keyword(s):  
Strength Training ◽  
Training Program ◽  
Body Height ◽  
Skills Training ◽  
Lower Limbs ◽  
Soccer Players ◽  
Control Group ◽  
Football Training ◽  
The Impact ◽  
Experimental Group

Introduction: The aim of the study was to compare the impact of a 6-week program combined with football training and strength training on strength and power parameters in highly trained soccer players. It was hypothesized that 6 weeks would be enough for the experimental group to improve their jumping ability and pushing power. Material and methods: The study involved 34 female footballers playing in Ekstraliga (age: 22 ± 5 years; body height: 167 ± 5 cm; body weight: 60 ± 8 kg). The contestants were divided into an experimental group and a control group of 17 people in each group. The control group performed football trainings combined with 2 additional strength units (50% 1RM load) 3 times a week. The experimental group, apart from football trainings, additionally performed 2 strength trainings per week (50–85% 1RM load). Results: The results of the experiment show a significant improvement in the height of the vertical jump and bench press while sitting in the experimental group CMJ (p <0.05; p = 0.000029; ES: 1.00; 11%), CMJA (p <0.05; p = 0 00003; ES = 1.09; 13%), and LP (p <0.05; p = 0.027681; ES = 0.48; 6%), while in the control group the changes in the results after the training program were statistically insignificant CMJ (p> 0.05; p = 0.274000; ES: 0.07, 1%), CMJA (p> 0.05; p = 0.350958 ES = 0.27, 3%), and LP (p> 0.05; p = 0.130153; ES = 0.27; 4%). Conclusion: The presented research results suggest that a short, six-week training program including general football training and strength training performed twice a week with loads gradually increasing during the preparatory period may significantly improve the strength and jumping parameters of the lower limbs in soccer players. Such information can be valuable at the stage of training in the field of special skills training in football.

Effect of High-Speed Treadmill Training With a Body Weight Support System in a Sport Acceleration Program With Female Soccer Players

2013 ◽  
Vol 27 (6) ◽  
pp. 1496-1502 ◽  
Author(s):  
A. Wayne Johnson ◽  
Carie S. Eastman ◽  
Jeffery Brent Feland ◽  
Ulrike H. Mitchell ◽  
Bartley Brett Mortensen ◽  
...  
Keyword(s):  
Body Weight ◽  
Support System ◽  
High Speed ◽  
Treadmill Training ◽  
Body Weight Support ◽  
Soccer Players ◽  
Weight Support ◽  
Body Weight Support System

scholarly journals Effects of concurrent training with self-selected intensity on the physical fitness of hypertensive individuals.

2018 ◽  
Vol 40 (1) ◽  
pp. 35739 ◽  
Author(s):  
Silas Nery de Oliveira ◽  
Antônio Renato Pereira Moro ◽  
Wagner Jorge Ribeiro Domingues ◽  
Ewerrton De Souza Bezerra
Keyword(s):  
Training Program ◽  
Repeated Measures ◽  
Exercise Program ◽  
Health Indicators ◽  
Cycle Ergometer ◽  
Elastic Tube ◽  
Functional Health ◽  
Concurrent Training ◽  
Post Intervention ◽  
Bonferroni Test

The objective of this study was to verify the influence of a concurrent exercise program with self-selected intensities, and order of exercise execution, on the cardiovascular indicators and functionality of medicated hypertensive patients. Seventeen individuals were allocated to one of two concurrent training groups: aerobic-resistance (7 men) and resistance-aerobic (3 men; 7 women). Each group underwent cardiovascular (heart rate, systolic and diastolic arterial pressure) and functional (Six minute walking test - 6MWT, Timed Up & Go test - TUG, flexibility and hand grip strength) evaluations pre and post training. The training occurred over 9 weeks. Resistance exercises were performed with an elastic tube and participants’ body weight; self-selected intensity was supported by the OMNI-RES scale. The aerobic exercise was performed using a cycle ergometer with intensity measured by the Borg scale. A two-way ANOVA for repeated measures was used for comparisons between training programs, followed post hoc by the Bonferroni test, adopting p < 0.05. There were no significant changes in the cardiovascular and functional capacity indicators from pre- to post-intervention, and there were no significant interactions based on the order of the training program. The results suggest that a concurrent training program with self-selected intensity, regardless of order of training, may promote similar changes in cardiovascular and functional health indicators in individuals with controlled hypertension.

scholarly journals The Use of Session RPE to Monitor the Intensity of Weight Training in Older Women: Acute Responses to Eccentric, Concentric, and Dynamic Exercises

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sandro S. Ferreira ◽  
Kleverton Krinski ◽  
Ragami C. Alves ◽  
Mariana L. Benites ◽  
Paulo E. Redkva ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Repeated Measures ◽  
Perceived Exertion ◽  
Weight Training ◽  
Training Session ◽  
Rating Of Perceived Exertion ◽  
Training Experience ◽  
Repeated Measures Analysis ◽  
Acute Responses ◽  
Muscle Actions

The rating of perceived exertion (RPE) is ability to detect and interpret organic sensations while performing exercises. This method has been used to measure the level of effort that is felt during weight-training at a given intensity. The purpose of this investigation was to compare session RPE values with those of traditional RPE measurements for different weight-training muscle actions, performed together or separately. Fourteen women with no former weight-training experience were recruited for the investigation. All participants completed five sessions of exercise: familiarization, maximum force, concentric-only (CONC-only), eccentric-only (ECC-only), and dynamic (DYN = CONC + ECC). The traditional RPE method was measured after each series of exercises, and the session RPE was measured 30 min after the end of the training session. The statistical analyses used were the pairedt-test, one-way analysis of variance, and repeated measures analysis of variance. Significant differences between traditional RPE and session RPE for DYN, CONC, and ECC exercises were not found. This investigation demonstrated that session RPE is similar to traditional RPE in terms of weight-training involving concentric, eccentric, or dynamic muscle exercises, and that it can be used to prescribe and monitor weight-training sessions in older subjects.

scholarly journals Muscle Oxygen Desaturation and Re-Saturation Capacity Limits in Repeated Sprint Ability Performance in Women Soccer Players: A New Physiological Interpretation

2021 ◽  
Vol 18 (7) ◽  
pp. 3484
Author(s):  
Aldo A. Vasquez-Bonilla ◽  
Alba Camacho-Cardeñosa ◽  
Rafael Timón ◽  
Ismael Martínez-Guardado ◽  
Marta Camacho-Cardeñosa ◽  
...  
Keyword(s):  
Repeated Measures ◽  
High Speed ◽  
Muscle Oxygenation ◽  
Soccer Players ◽  
Individual Response ◽  
Muscle Oxygen ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
Linear Association ◽  
Sprint Ability

Muscle oxygen consumption could provide information on oxidative metabolism in women soccer players. Therefore, the objective of this study was to analyze muscle oxygenation dynamics during repeated sprint ability (RSA): (8 sprint × 20 s recovery) by near-infrared spectroscopy (NIRS). The sample was made up of 38 professional women soccer players. To measure the external load, the best time, worst time, average time, individual speed, sprint decrement, and power were assessed. In connection with the internal load, the desaturation (sprint) and re-saturation (recovery) rates, as well as the oxygen extraction (∇%SmO2) in the gastrocnemius muscle and maximum heart rate (%HRmax) were measured. A repeated measures statistic was applied based on the inter-individual response of each subject from the baseline versus the other sprints, with linear regression and nonlinear regression analyses between variables. There was an increase in the SmO2: desaturation rate after four sprints (Δ = 32%), in the re-saturation rate after six sprints (Δ = 89%), and in ∇%SmO2 after four sprints (Δ = 72.1%). There was a linear association between the rates of desaturation and re-saturation relationships and the worst time (r = 0.85), and a non-linear association between ∇%SmO2 and speed (r = 0.89) and between ∇%SmO2 and the sprint decrease (r = 0.93). The progressive increase in SmO2 during RSA is a performance limitation to maintain a high speed; it depends on the capacity of fatigue resistance. Therefore, monitoring the muscle oxygenation dynamics could be a useful tool to evaluate the performance in women soccer players.

scholarly journals Muscle Activity Asymmetry of the Lower Limbs During Sprinting in Elite Soccer Players

2020 ◽  
Vol 75 (1) ◽  
pp. 239-245
Author(s):  
Przemysław Pietraszewski ◽  
Artur Gołaś ◽  
Aleksander Matusiński ◽  
Sylwia Mrzygłód ◽  
Aleksandra Mostowik ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Body Height ◽  
Lower Limbs ◽  
Soccer Players ◽  
Emg Activity ◽  
Professional Soccer ◽  
Left And Right ◽  
Muscle Groups ◽  
The Right ◽  
Lh Rh

Abstract The analysis of movement patterns through EMG activity provides the opportunity to identify the muscle groups most involved in a particular exercise, and to determine the scope of inter-limb deficiencies. The aim of the present study was to investigate the effects of a side-to-side muscle activity asymmetry between the left and the right lower limb during sprinting in soccer players. Sixteen professional soccer players took part in the study. Their age, body mass and body height equaled 23.7 ± 7.6 years, 81.2 ± 10.8 kg and 179.3 ± 12.2 cm, respectively. The sprint test consisted of two maximal sprints over 30 m with a 5-min rest interval between each sprint. EMG was recorded bilaterally from the quadriceps, hamstrings and gluteal muscles. Regression analysis revealed a significant effect of a side-to-side average muscle activity asymmetry between the left and right hamstring (LH/RH) muscles during the speed tests at 5 m (p = 0.044), and 30 m (p = 0.045), as well as the left and right glutes (LG/RG) at 5 m (p = 0.044) and 30 m (p = 0.043). Our results indicate that hamstring and glute muscles should be selectively and additionally activated during resistance training in soccer players to prevent injuries and improve sprint performance.

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