scholarly journals Immediate Effect of Kinesio Taping on Muscle Response in Young Elite Soccer Players

2013 ◽  
Vol 22 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Moisés de Hoyo ◽  
Alejandro Álvarez-Mesa ◽  
Borja Sañudo ◽  
Luis Carrasco ◽  
Sergio Domínguez
Keyword(s):  
Outcome Measures ◽  
Body Mass ◽  
Sports Medicine ◽  
Vastus Lateralis ◽  
Random Order ◽  
Muscle Performance ◽  
Soccer Players ◽  
Kinesio Taping ◽  
University Laboratory ◽  
Taping Technique

Context:Kinesio taping (KT) is a new taping technique increasingly used in sports medicine to improve muscle performance; however, its real effect is not entirely known.Objective:To assess the immediate effects of KT on muscle performance in young healthy elite soccer players.Design:Crossover study.Setting:University laboratory.Participants:Eighteen young elite soccer players voluntarily participated in the study (mean ± SEM: age 18.20 ± 2.45 y, height 1.76 ± 3.56 m, body mass 65.25 ± 3.76 kg, body-mass index 20.12 ± 1.25 kg/m2).Interventions:Each subject completed 2 different protocols, with and without KT. Interventions were performed in a random order, with a washout period between conditions of 1 wk.Main Outcome Measures:Outcome measures included tensiomyographic response in the vastus lateralis and vastus medialis, power output with 30 and 50 kg, countermovement jump, and 10-m sprint.Results:Data showed no significant differences for any of the outcomes analyzed between interventions.Conclusions:KT does not produce a short-term improvement in muscle performance in young elite soccer players.

Cardiorespiratory Responses During Underwater and Land Treadmill Exercise in College Athletes

2011 ◽  
Vol 20 (3) ◽  
pp. 345-354 ◽  
Author(s):  
Peter Brubaker ◽  
Cemal Ozemek ◽  
Alimer Gonzalez ◽  
Stephen Wiley ◽  
Gregory Collins
Keyword(s):  
Athletic Training ◽  
Outcome Measures ◽  
Sports Medicine ◽  
Perceived Exertion ◽  
College Athletes ◽  
Random Order ◽  
Original Research ◽  
Cardiorespiratory Responses ◽  
Significant Difference ◽  
The Relationship

Context:Underwater treadmill (UTM) exercise is being used with increased frequency for rehabilitation of injured athletes, yet there has been little research conducted on this modality.Objective:To determine the cardiorespiratory responses of UTM vs land treadmill (LTM) exercise, particularly with respect to the relationship between heart rate (HR) and oxygen consumption (VO2).Design and Setting:This quantitative original research took place in sports medicine and athletic training facilities at Wake Forest University.Participants:11 Wake Forest University student athletes (20.8 ± 0.6 y, 6 women and 5 men).Intervention:All participants completed the UTM and LTM exercise-testing protocols in random order. After 5 min of standing rest, both UTM and LTM protocols had 4 stages of increasing belt speed (2.3, 4.9, 7.3, and 9.6 km/h) followed by 3 exercise stages at 9.6 km/h with increasing water-jet resistance (30%, 40%, and 50% of jet capacity) or inclines (1%, 2%, and 4% grade).Main Outcome Measures:A Cosmed K4b2 device with Polar monitor was used to collect HR, ventilation (Ve), tidal volume (TV), breathing frequency (Bf), and VO2 every minute. Ratings of perceived exertion (RPE) were also obtained each minute.Results:There was no significant difference between UTM and LTM for VO2 at rest or during any stage of exercise except stage 3. Furthermore, there were no significant differences between UTM and LTM for HR, Ve, Bf, and RPE on any exercise stage. Linear regression of HR vs VO2, across all stages of exercise, indicates a similar relationship in these variables during UTM (r = .94, y = .269x − 10.86) and LTM (r = .95, y = .291x − 12.98).Conclusions:These data indicate that UTM and LTM exercise elicits similar cardiorespiratory responses and that HR can be used to guide appropriate exercise intensity for college athletes during UTM.

Two Stretching Treatments for the Hamstrings: Proprioceptive Neuromuscular Facilitation Versus Kinesio Taping

2013 ◽  
Vol 22 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Che-Hsiu Chen ◽  
Tsun-Shun Huang ◽  
Huei-Ming Chai ◽  
Mei-Hwa Jan ◽  
Jiu-Jenq Lin
Keyword(s):  
Outcome Measures ◽  
Peak Torque ◽  
Muscle Stiffness ◽  
Muscle Performance ◽  
Static Stretch ◽  
Kinesio Taping ◽  
Negative Results ◽  
Significant Difference ◽  
Proprioceptive Neuromuscular Facilitation ◽  
Before And After

Context:Recent studies have shown that the static stretch (SS) may adversely affect leg-muscle performance.Objectives:The authors examined the short-term effects of 2 stretching exercises on hamstrings muscle before and after exercise.Design:Crossover.Setting:Laboratory.Participants:9 healthy, physically active men.Interventions:There were 3 protocols in a randomized order with a 7-d interval: nonstretching (CON protocol), hamstrings static stretching (SS) with proprioceptive neuromuscular facilitation (PNF), and SS with kinesio-taping application on the hamstrings.Main Outcome Measures:Outcome measures included first-felt and maximum tolerant-felt range of motion (FROM and TROM), maximal knee-flexion peak torque (PT) at 180°/s, and hamstrings muscle stiffness.Results:Groups were not different at prestretching in terms of hamstrings flexibility, PT, and muscle stiffness. At poststretching, both stretching protocols showed significant increases in FROM and TROM (P < .05). Stiffer hamstrings muscle and decreased PT were found in both SS+PNF and CON protocols (P < .05). However, there was no significant difference in the SS+Taping protocol (P > .05).Conclusion:The stretching protocols improve hamstrings flexibility immediately, but after exercise hamstrings peak torque is diminished in the SS+PNF but not in the SS+Taping group. This means that SS+Taping can prevent negative results from exercise, which may prevent muscle injury.

scholarly journals The Neuromuscular Determinants of Unilateral Jump Performance in Soccer Players Are Direction-Specific

2018 ◽  
Vol 13 (5) ◽  
pp. 604-611 ◽  
Author(s):  
Conall F. Murtagh ◽  
Christopher Nulty ◽  
Jos Vanrenterghem ◽  
Andrew O’Boyle ◽  
Ryland Morgans ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Vastus Lateralis ◽  
Maximum Voluntary Contraction ◽  
Voluntary Contraction ◽  
Soccer Players ◽  
Muscle Size ◽  
Fascicle Length ◽  
Jump Performance ◽  
Isometric Maximum Voluntary Contraction

Purpose: To investigate differences in neuromuscular factors between elite and nonelite players and to establish which factors underpin direction-specific unilateral jump performance. Methods: Elite (n = 23; age, 18.1 [1.0] y; body mass index, 23.1 [1.8] kg·m−2) and nonelite (n = 20; age, 22.3 [2.7] y; body mass index, 23.8 [1.8] kg·m−2) soccer players performed 3 unilateral countermovement jumps (CMJs) on a force platform in the vertical, horizontal-forward, and medial directions. Knee extension isometric maximum voluntary contraction torque was assessed using isokinetic dynamometry. Vastus lateralis fascicle length, angle of pennation, quadriceps femoris muscle volume (Mvol), and physiological cross-sectional area (PCSA) were assessed using ultrasonography. Vastus lateralis activation was assessed using electromyography. Results: Elite soccer players presented greater knee extensor isometric maximum voluntary contraction torque (365.7 [66.6] vs 320.1 [62.6] N·m; P = .045), Mvol (2853 [508] vs 2429 [232] cm3; P = .001), and PCSA (227 [42] vs 193 [25] cm2; P = .003) than nonelite. In both cohorts, unilateral vertical and unilateral medial CMJ performance correlated with Mvol and PCSA (r ≥ .310, P ≤ .043). In elite soccer players, unilateral vertical and unilateral medial CMJ performance correlated with upward phase vastus lateralis activation and angle of pennation (r ≥ .478, P ≤ .028). Unilateral horizontal-forward CMJ peak vertical power did not correlate with any measure of muscle size or activation but correlated inversely with angle of pennation (r = −.413, P = .037). Conclusions: While larger and stronger quadriceps differentiated elite from nonelite players, relationships between neuromuscular factors and unilateral jump performance were shown to be direction-specific. These findings support a notion that improving direction-specific muscular power in soccer requires improving a distinct neuromuscular profile.

Kinematic Analysis of Selected Reach Directions of the Star Excursion Balance Test Compared With the Y-Balance Test

2014 ◽  
Vol 23 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Karl Fullam ◽  
Brian Caulfield ◽  
Garrett F. Coughlan ◽  
Eamonn Delahunt
Keyword(s):  
Outcome Measures ◽  
Body Mass ◽  
Test Performance ◽  
Sagittal Plane ◽  
Balance Test ◽  
Healthy Female ◽  
Star Excursion Balance Test ◽  
Analysis System ◽  
Compare And Contrast ◽  
University Laboratory

Context:The Star Excursion Balance Test (SEBT) and the Y-Balance Test (YBT) have 3 common reach directions: anterior (ANT), posteromedial (PM), and posterolateral (PL). Previous research has indicated that reach-distance performance on the ANT reach direction of the SEBT differs from that on the YBT. Kinematic patterns associated with the ANT reach direction of the SEBT and YBT need to be investigated to fully understand this difference, along with the PM and PL reach directions, to deduce any kinematic discrepancies between the 2 balance tests.Objective:To compare and contrast the kinematic patterns associated with test performance on the reach directions common to the SEBT and YBT.Design:Controlled laboratory study.Setting:University laboratory.Participants:15 healthy male (age 23.33 ± 2.02 y, height 1.77 ± 0.04 m, body mass 80.00 ± 9.03 kg) and 14 healthy female (age 21.14 ± 1.66 y, height 1.63 ± 0.06 m, body mass 59.58 ± 7.61 kg) volunteers.Intervention:Each participant performed 3 trials of the ANT, PM, and PL reach directions of the SEBT and YBT on their dominant leg.Main Outcome Measures:Sagittal-plane lower-limb kinematic profiles were recorded using a 3-D motion-analysis system. Reach distances were also recorded for each reach direction.Results:A significant main effect (P < .05) was observed for test condition with participants reaching farther on the ANT reach direction of the SEBT compared with the YBT. While reaching in the ANT direction participants were characterized by a more flexed position of the hip joint at the point of maximum reach on the YBT (27.94° ± 13.84°) compared with the SEBT (20.37° ± 18.64°).Conclusions:Based on these observed results, the authors conclude that test performance on the SEBT and YBT differ in terms of dynamic neuromuscular demands, as evidenced by differences in reach distances achieved in the ANT reach direction and associated test kinematic profile.

scholarly journals Extraordinary Fast-Twitch Fiber Abundance in Elite Weightlifters

2018 ◽  
Author(s):  
Nathan Serrano ◽  
Lauren M. Colenso-Semple ◽  
Kara K. Lazauskus ◽  
Jeremy W. Siu ◽  
James R. Bagley ◽  
...  
Keyword(s):  
Body Mass ◽  
Vastus Lateralis ◽  
Muscle Performance ◽  
Training Experience ◽  
Mhc I ◽  
Potential Link ◽  
National Training ◽  
Fast Twitch ◽  
Time Frames ◽  
Mhc Iia

ABSTRACTHuman skeletal muscle fibers exist across a continuum of slow → fast-twitch. The amount of each fiber type (FT) influences muscle performance but remains largely unexplored in elite athletes, particularly from strength/power sports. To address this nescience, vastus lateralis (VL) biopsies were performed on World/Olympic (female, n=6, “WCF”) and National-caliber (female, n=9, “NCF”; and male, n=6, “NCM”) American weightlifters. Participant accolades included 3 Olympic Games, 19 World Championships, 25 National records, and >170 National/International medals. Samples were analyzed for myosin heavy chain (MHC) content via SDS-PAGE using two distinct techniques: single fiber (SF) distribution (%) and homogenate (HG) composition. These athletes displayed the highest MHC IIa concentrations ever reported in healthy VL (23±9% I, 5±3% I/IIa, 67±13% IIa, and 6±10% IIa/IIx), with WCF expressing a notable 71±17% (NCF=67±8%, NCM=63±16%). The heavyweights accounted for 91% of the MHC IIa/IIx fibers. When compared to SF, HG overestimated MHC I (23±9 vs. 31±9%) and IIx (0±0 vs. 3±6%) by misclassifying I/IIa fibers as I and IIa/IIx fibers as IIx. These findings suggest athlete caliber (World vs. National), training experience, and body mass determine FT% more than sex and refutes the common pronouncement that women possess more slow and fewer fast-twitch fibers than men. Our results also show the abundance of pure MHC IIa and rarity of IIx in elite strength/power-trained athletes, indicate a potential link between MHC IIa/IIx frequency and body mass, and question the fidelity of HG as a measure of FT% distribution. The extreme fast-twitch abundance partially explains how elite weightlifters generate high forces in rapid time-frames. These data highlight the need for more cellular and molecular muscle research on elite anaerobic athletes.

scholarly journals The Effects of a Soccer-Specific Fitness Test on Eccentric Knee Flexor Strength

2020 ◽  
pp. 1-5
Author(s):  
Christopher Michael Brogden ◽  
Lewis Gough ◽  
Adam Kelly
Keyword(s):  
Outcome Measures ◽  
Body Mass ◽  
Assessment Method ◽  
Peak Force ◽  
Soccer Players ◽  
Youth Soccer ◽  
Knee Flexor ◽  
Fitness Test ◽  
Hamstring Injuries ◽  
Flexor Strength

Context: Physiological fitness testing, such as the Yo-Yo Intermittent Recovery Test (YYIR) is a key requirement of the Elite Player Performance Plan, introduced by the English Premier League. Eccentric hamstring strength has been identified as a risk factor for hamstring injuries in soccer players, with fatigue highlighted to further exasperate this issue. Objective: The aim of the current study was to examine the effect of the YYIR level 1 (YYIR1) on eccentric knee flexor strength assessed using the NordBord in youth soccer players. Design: Experimental design. Setting: Soccer club academy. Participants: A total of 67 male academy soccer players (age = 16.58 [0.57] y; height = 175.45 [5.85] cm; mass = 66.30 [8.21] kg) volunteered to participate in the current study during the English competitive soccer season. Main Outcome Measures: Participants conducted eccentric hamstring strength assessments using the NordBord prior to and immediately postcompletion of the YYIR1, with outcome measures of peak force and peak force relative to body mass recorded. Results: Paired t tests highlighted increased absolute eccentric knee flexor strength values (P < .001) immediately post-YYIR1 for both the dominant and nondominant limbs, with the same trend (P < .001) observed for eccentric strength relative to body mass. Conclusions: The results of this study indicate that the YYIR1 does not induce eccentric knee flexor fatigue and as such is not a valid assessment method to assess the effects of fatigue on hamstring function. However, results do suggest that the NordBord may be considered a viable and more accessible alternative to detect pre–post fitness test/fatigue protocol differences in eccentric knee flexor peak strength while working in the field.

scholarly journals Does Resisted Sled Towing Improve the Physical Qualities of Elite Youth Soccer Players of Differing Maturity Status?

2021 ◽  
Author(s):  
Rhys Morris ◽  
Tony Myers ◽  
Stacey Emmonds ◽  
Dave Singleton ◽  
Kevin Till
Keyword(s):  
Body Mass ◽  
Bayesian Regression ◽  
Soccer Players ◽  
Height Velocity ◽  
Regression To The Mean ◽  
Peak Height Velocity ◽  
Maturity Group ◽  
Youth Soccer ◽  
Professional Soccer ◽  
The Impact

Abstract Purpose Sled towing has been shown to be an effective method to enhance the physical qualities in youth athletes. The aim of this study was to evaluate the impact of a 6-week sled towing intervention on muscular strength, speed and power in elite youth soccer players of differing maturity status. Method Seventy-three male elite youth soccer players aged 12–18 years (Pre-Peak Height Velocity [PHV] n = 25; Circa-PHV n = 24; Post-PHV n = 24) from one professional soccer academy participated in this study. Sprint assessments (10 m and 30 m), countermovement jump and isometric mid-thigh pull were undertaken before (T1) and after (T2) a 6-week intervention. The training intervention consisted of 6 weeks (2 × per week, 10 sprints over 20 m distance) of resisted sled towing (linear progression 10%–30% of body mass) during the competitive season. Bayesian regression models analysed differences between T1 and T2 within each maturity group. Results There were minimal changes in strength, speed and power (P = 0.35–0.80) for each maturity group across the 6-week intervention. Where there were changes with greater certainty, they are unlikely to represent real effect due to higher regression to the mean (RTM). Conclusion It appears that a 6-week sled towing training programme with loadings of 10%–30% body mass only maintains physical qualities in elite youth soccer players pre-, circa-, and post-PHV. Further research is required to determine the effectiveness of this training method in long-term athletic development programmes.

scholarly journals Seasonal Body Composition Variation Amongst Elite European Professional Soccer Players: An Approach of Talent Identification

2018 ◽  
Vol 62 (1) ◽  
pp. 177-184 ◽  
Author(s):  
Adam Lee Owen ◽  
Carlos Lago-Peñas ◽  
Gordon Dunlop ◽  
Rouissi Mehdi ◽  
Moktar Chtara ◽  
...  
Keyword(s):  
Body Composition ◽  
Lean Body Mass ◽  
Body Mass ◽  
Fat Mass ◽  
Body Height ◽  
Fat Free Mass ◽  
Soccer Players ◽  
Professional Soccer ◽  
Elite Level ◽  
Composition Profiles

AbstractThe primary aim of the investigation was to study the seasonal changes in body composition in elite European soccer players and identify key playing positional differences. Twenty-two players (age = 24 ± 3.7 years, body height = 180.45 ± 5.12 cm, body mass = 76.66 ± 5.34 kg) were tested. Players’ mass (kg), lean body mass (LBM), fat free mass (FFM), fat mass (FM), muscle girths (MG) and sum of 8 skinfolds (mm) were measured across 5 time points (T0 = Start of pre-season training; T1 = End of pre-season training; T2 = Mid-season; T3 = End of mid-season break; T4 = End of season). Players were divided into their tactical positional roles for analysis. The specific positions they were divided into included defenders (n = 8), midfielders (n = 8) and forwards (n = 6). Assessment of training and matchplay exposure were also recorded. Sites-4, Sites-7, Sites-8 and Fat Mass decreased dramatically from T0 to T1 and T2 in all playing positions (p < 0.01), while no remarkable differences were found between T2, T3 and T4. Except for defenders, calf girth and lean mass were higher in T2, T3 and T4 compared to T0 and T1 (p < 0.01). Midfielders were found to be leaner than forwards and defenders in all data collection time point sessions. Defenders showed higher values in calf girth and lean body mass than midfielders and forwards. It can be concluded from this investigation that there are large variances n positional body composition profiles amongst professional European soccer players. Furthermore, significant changes are prevalent and occur across the season from LBM, FFM, MG and skinfold assessment amongst European elite level soccer players.

Strength Training Using Elastic Bands: Improvement of Muscle Power and Throwing Performance in Young Female Handball Players

2017 ◽  
Vol 26 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Naryana Cristina Mascarin ◽  
Claudio Andre Barbosa de Lira ◽  
Rodrigo Luiz Vancini ◽  
Alberto de Castro Pochini ◽  
Antonio Carlos da Silva ◽  
...  
Keyword(s):  
Strength Training ◽  
Outcome Measures ◽  
Interaction Effect ◽  
Muscle Power ◽  
Young Female ◽  
Muscle Performance ◽  
Significant Group ◽  
Ball Speed ◽  
Time Interaction ◽  
Elastic Bands

Context:Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in handball. Strength training programs (STPs) may play an important preventive role.Objective:To verify the effects of an STP using elastic bands on shoulder muscles and ball-throwing speed.Design:Randomized and prospective controlled trial.Setting:Exercise physiology laboratory.Participants:Thirty-nine female handball players were randomly assigned to an experimental (EG, n = 21, 15.3 ± 1.1 y) or a control (CG, n = 18, 15.0 ± 0.8 y) group.Intervention:The EG performed the STP with elastic-band progressive exercises for 6 wk before regular handball training, and the CG underwent only their regular training.Main Outcome Measures:Before and after the STP, both groups underwent a ball-throwing-speed test and isokinetic test to assess shoulder internal- (IR) and external-rotator muscle performance.Results:Average power values for IR muscles presented a significant group-vs-time interaction effect (F = 3.9, P = .05); EG presented significantly higher values after the STP (P = .03). Ball speed presented higher values in EG after the STP in standing (P = .04) and jumping (P = .03) throws. IR peak-torque values and balance in shoulder-rotator muscles presented no group-vs-time interaction effect.Conclusions:STP using elastic bands performed for 6 wk was effective to improve muscle power and ball speed for young female handball players.

Sign in / Sign up

Export Citation Format

Share Document