Overuse injury risk increases during periods of accelerated growth, which can subsequently impact development in academy soccer, suggesting a need to quantify training exposure. Nonprescriptive scheme legislation could lead inconsistent approaches monitoring maturity and load. Therefore, this study aimed communicate current practices UK soccer academies toward biological load.Forty-nine respondents completed an online survey representing support staff from male Premier League (n = 38) female...

Abstract Bishop, C, Weldon, A, Hughes, J, Brazier, Loturco, I, Turner, and Read, P. Seasonal variation of physical performance interlimb asymmetry in professional cricket athletes. J Strength Cond Res 35(4): 941–948, 2021—The aims this study were to: (a) determine the seasonal players (b) asymmetries same cohort players. Fifteen male (age: 20.60 ± 1.59 years; height: 1.82 0.08 m; body mass: 78.70 11.23 kg) performed unilateral countermovement jumps (CMJs), drop jumps, 10 m sprints 505 change...

Poor neuromuscular control has been proposed as a risk factor for non-contact injuries, thus this study aimed to explore the effects of soccer-specific fatigue on leg muscle activation, reactive strength, stiffness, and functional hamstring/quadriceps ratio (H/QFUNC ) in elite male youth soccer players. Outcome measures were determined 18 players (age 14.4 ± 0.5 years; stature 169.4 9.9 cm; mass 59.3 8.9 kg; maturity offset 0.86 0.88 years) pre post simulated match play (SAFT90 ). There was...

Jeffreys, MA, De Ste Croix, MBA, Lloyd, RS, Oliver, JL, and Hughes, JD. The effect of varying plyometric volume on stretch-shortening cycle capability in collegiate male rugby players. J Strength Cond Res 33(1): 139-145, 2019-The purpose this study was to identify the effectiveness low high loads developing A between-group repeated measures design used. Thirty-six subjects (age 20.3 ± 1.6 years, mass 91.63 10.36 kg, stature 182.03 5.24 cm) were randomly assigned one 3 groups: a control group...

The purpose of this study was to determine muscle tissue oxidative capacity and recovery in intermediate, advanced, elite rock climbers. Forty-four male participants performed (a) sustained (b) intermittent contractions at 40% maximal volitional contraction (MVC) on a sport-specific fingerboard until fatigue. Near-infrared spectroscopy used assess oxygenation during both the exercise 5-minutes passive period, flexor digitorum profundus (FDP) carpi radialis (FCR). During only, deoxygenation...

ABSTRACT Considering the great popularity of eccentric-based training, purpose this review is to first provide scientific rationale for its use; second, summarize training modalities that can be used; and finally, offer practical recommendations on how implement enhance sports performance. The molecular neural mechanisms underlying eccentric actions are partially distinct from those concentric isometric actions. During actions, theories suggest a strain-induced modulation actin-myosin...

Handford, MJ, Bright, TE, Mundy, P, Lake, J, McMahon, and Hughes, JD. My coach says: the effects of accelerated eccentric landing cues to elicit change in countermovement jump propulsive performance. J Strength Cond Res XX(X): 000-000, 2024-The aim study was determine if an (AE) cue during a (CMJ) produces distinct kinetic outputs. Eighteen strength-trained men (mean ± SD: age = 25.9 4.5 years; body mass 87.1 12.2 kg; stature 181.7 6.2 cm) completed ("jump as high fast possible") (NORM) or...

BASKETBALL IS A HIGH-INTENSITY SPORT REQUIRING RANGE OF ATHLETIC ABILITIES: EXPLOSIVE STRENGTH AND RATE FORCE DEVELOPMENT, AGILITY, COORDINATION, SPEED, ANAEROBIC LACTATE, ALACTIC CAPACITIES. WITHIN ELITE CONDITIONING PROGRAMS, DISTINCT VARIATION IN THE ASSESSMENT SUCH QUALITIES EVIDENT, HIGHLIGHTING NEED FOR EVIDENCE-BASED PRACTICE TO DETERMINE ACCEPTABLE VALIDITY RELIABILITY MEASURES USED. THEREFORE, PURPOSE THIS REVIEW PHYSIOLOGICAL REQUIREMENTS SPORT, SO THAT SUITABLE TESTING APPROACHES...

De Ste Croix, MBA, Hughes, JD, Lloyd, RS, Oliver, JL, and Read, PJ. Leg stiffness in female soccer players: intersession reliability the fatiguing effects of soccer-specific exercise. J Strength Cond Res 31(11): 3052-3058, 2016-Low levels leg reduced when fatigue is present compromise physical performance increase injury risk. The purpose this study was to (a) determine measures obtained from contact mat data (b) explore age-related differences after exposure a protocol young players....

Purpose Monitoring maturation facilitates effective talent development. Various methods of maturity estimation exist with limited knowledge concordance between methods. This study aims to establish agreement varied constructs predict status and compare categorise players using established thresholds. Methods compared four equations anthropometrical data from 113 male adolescent soccer (mean ±SD; age, 14.3 ± 1 years) two academies. Conservative (±1 year) less conservative (±0.5 circa-PHV...

Post-match assessment of creatine kinase (CK) activity and delayed-onset muscle soreness (DOMS) are common markers exercise-induced damage recovery status in soccer players. These responses have not been examined youth female This study the effect competitive match play on CK DOMS elite Thirty-four players, divided into three chronological age groups (U13, n=11; U15, n=10; U17 n=12). Players completed baseline testing for that was repeated immediately (for DOMS), 80, 128 168 h...

Hughes, JD, Massiah, RG, and Clarke, RD. The potentiating effect of an accentuated eccentric load on countermovement jump performance. J Strength Cond Res 30(12): 3450-3455, 2016-Postactivation potentiation (PAP) following a bout high-intensity exercise short duration is known to produce both fatigued potentiated state. There has been much research in the effectiveness various PAP protocols, yet type dynamic muscle action utilized seldom investigated. Therefore, present study aimed assess...

Abstract Heelas, T, Theis, N, and Hughes, JD. Muscle activation patterns during variable resistance deadlift training with without elastic bands. J Strength Cond Res 35(11): 3006–3011, 2021—The purpose of this study was to determine the effects band-assisted on muscular activity in lower limbs barbell kinematics concentric phase deadlift. Fifteen trained men (mean ± SD : 28.7 9.3 years; 1.80 0.90 m; 92.5 15.1 kg) performed 6 repetitions 4 loading conditions: 100-kg bar (no band), 80-kg 20-kg...

This randomized control study aimed to assess 12 weeks of a novel neuromuscular training program (KneeRugbyWomen) on jump-related biomechanical variables in amateur female rugby players. Twenty-four participants were randomly allocated either an experimental group (EG; n = 12, age: 20.05 ± 4.43 yrs., height: 166.54 4.46 cm, weight: 64.65 6.44 kg) or (CG; 20.04 4.88 166.83 7.30 69.83 12.84 kg). Participants tested before and after 12-week intervention for (leg stiffness, Reactive Strength...

There is a paucity of literature analyzing the impact fatigue from actual competitive soccer match-play on measures neuromuscular function and muscle damage markers in youth players. Aims The main purpose was to analyze acute pre- post-competitive changes landing mechanics, stretch-shortening cycle capability, physical performance, damage, match intensity. A secondary explore whether players' maturity status chronological age were associated with post-soccer responses. Methods Thirty-two...

THE USE OF GLOBAL POSITIONING SYSTEMS (GPS) IN ANALYZING FIELD SPORT PERFORMANCE IS A RECENT DEVELOPMENT, PARTICULARLY SOCCER, RUGBY, AND HOCKEY. RESEARCH WITH GPS FEMALE SPORTS HAS CENTERED ON MATCH PERFORMANCE, FATIGUE, TRAINING INTENSITY. PARTICULAR CONCERN FOR ANALYSIS NEED STANDARDIZED METHODS TO DETERMINE OCCURRENCE HIGH-INTENSITY RUNNING SPRINTING. ATHLETES CAN ASSIST DEVELOPMENT PLANS MONITORING PROTOCOLS SPORTS. AIM THIS ARTICLE REVIEW PUBLISHED STUDIES PROVIDE USEFUL INFORMATION...

The different architectural adaptations and the regional changes that occur with eccentric (ECC) vs. concentric (CON) muscle actions are not fully understood.The purpose was to investigate in vastus lateralis (VL) after ECC CON training.Sixteen males (23 ± 3 y) performed or twice weekly over 5 weeks, using a single-leg design.Both training modalities caused similar increases knee extensor strength (measured dynamometry) (10-13%) volume (8%) 3D ultrasound) 5-weeks of training.Anatomical...

ABSTRACT Various methods of eccentric training that aim to increase muscle mass or reduce ground contact time during a landing task have been extensively researched and practically examined. However, multiple implement currently exist; they differ in execution intended adaptions. There is clear differentiation between an action motion whereby alludes downward movement exercise. The proposed motions are dissipating eccentrics, deceleration overcoming maximal rebound eccentrics. These...

This study aimed to compare the agreement between three-dimensional motion capture and vertical ground reaction force (vGRF) in identifying point of dumbbell (DB) release during a countermovement jump with accentuated eccentric loading (CMJAEL), examine influence vGRF analysis method on reliability magnitude CMJAEL variables. Twenty participants (10 male, 10 female) completed five maximal effort at 20% 30% body mass (CMJAEL20 CMJAEL30, respectively) using DBs. There was large variability...

The efficacy of robustness training for high- versus low-risk individuals within high-risk groups is currently unknown.To explore the on injury risk factors among female youth soccer players and to examine if athletes are greater responders such training.Controlled laboratory study.A total 125 elite English FA talent pathway were randomly selected into a group (n = 71) or control 54). Relative leg stiffness, 2-dimensional knee valgus flexion range motion from single-legged countermovement...

It has been suggested that altering the knee flexion angle during a commonly used supine isometric strength test developed with professional soccer players changes preferential hamstring muscle recruitment. The aim of this study was to examine electromyography (EMG) joint-angle relationship test, as these data are currently unknown.Ten recreational male athletes (age: 28 ± 2.4 years) were recruited and performed on their dominant leg placed at two pre-selected angles (30° 90°). surface EMG...

Clarke, R, Read, PJ, De Ste Croix, MBA, and Hughes, JD. The deceleration deficit: a novel field-based method to quantify during change of direction performance. J Strength Cond Res 36(9): 2434-2439, 2022-The study investigated the relationship between linear (COD) speed performance components individual differences deficit (DD) COD (CODD). Thirty-six subjects (mean ± SD : age = 20.3 2.9 years; stature 175.2 7.7 cm; body mass 78.0 16.7 kg) completed 3 trials 505 test in both turning...

This study investigated the efficacy of deadlifts and box squats, with a combination traditional accommodating resistance, as postactivation potentiating stimulus standing broad jumps (SBJ) in multiple-set contrast protocol. Twelve professional rugby league players (21.4 [2.5] y; 181.3 [8.3] cm, 91.9 [8.8] kg; 1-repetition-maximum [1RM] back squat/body mass 1.59 [0.21]; 1RM deadlift/body 2.11 [0.25]; ≥3-y resistance-training experience) performed baseline SBJ before protocol involving 2...