Abstract Pérez-Castilla, A, Piepoli, Delgado-García, G, Garrido-Blanca, and García-Ramos, A. Reliability concurrent validity of seven commercially available devices for the assessment movement velocity at different intensities during bench press. J Strength Cond Res 33(5): 1258–1265, 2019—The aim this study was to compare reliability 7 measure press exercise. Fourteen men completed 2 testing sessions. One-repetition maximum (1RM) in exercise determined first session. The second session...

To compare the accuracy of different devices to predict bench-press 1-repetition maximum (1RM) from individual load-velocity relationship modeled through multiple- and 2-point methods.Eleven men performed an incremental test on a Smith machine against 5 loads (45-55-65-75-85%1RM), followed by 1RM attempts. The mean velocity was simultaneously measured 1 linear transducer (T-Force), 2 position transducers (Chronojump Speed4Lift), camera-based optoelectronic system (Velowin), inertial...

Countermovement bipodal jumps (CMJs), are widely used for health and performance assessment, but the software required such analyses is often costly. The study aim was to examine validity of an Excel/VBA spreadsheet comprehensive CMJ kinetic analysis. outcomes have been informed from scientific literature, includes modules data filtering photogrammetric To evaluate its validity, 21 participants performed CMJs on a dual force platform system, primary were compared with those derived...

Running-induced fatigue affects several biomechanical parameters, yet few studies are focused on the acceleration spikes asymmetries. This study aims to evaluate effects of a 30-minute run lower limbs spikes’ Eighteen recreational runners per-formed test at moderate speed and asymmetries kinematic (temporal) parameters were measured via accelerometers -on tibias sacrum- 2D photogrammetry. Acceleration continuously aver-aged per minute assess relationship between spike asym-metries linear...

Running-induced fatigue affects several biomechanical parameters, and yet few studies are focused on the acceleration spikes’ asymmetries. This study aimed to evaluate effects of a 30 min run lower limbs Eighteen recreational runners (35.6 ± 7.5 years; seven women) performed treadmill running protocol at moderate speed asymmetries kinematic (temporal) parameters were measured via accelerometers—on tibias sacrum—and photogrammetry. Acceleration continuously averaged per minute assess...

This study aimed to investigate the independent and combined associations between several fatness indicators fitness components with functional movement quality in overweight/obese children. A total of 56 children (33 girls, aged 8-12) classified as according World Obesity Federation standard cut points, participated this study. Participants underwent assessments [body mass index (BMI), waist circumference, bioelectrical impedance measures], [1 repetition maximum bench leg press, ALPHA test...

Abstract Molina-Garcia, P, Mora-Gonzalez, J, Migueles, JH, Rodriguez-Ayllon, M, Esteban-Cornejo, I, Cadenas-Sanchez, C, Plaza-Florido, A, Gil-Cosano, JJ, Pelaez-Perez, MA, Garcia-Delgado, G, Vanrenterghem, and Ortega, FB. Effects of exercise on body posture, functional movement, physical fitness in children with overweight/obesity. J Strength Cond Res 34(8): 2146–2155, 2020—This study aims to analyze whether a 13-week program based “movement quality” “multi-games” can lead simultaneous...

This study aimed to evaluate the between-session reliability of single-leg performance and asymmetry variables during unilateral bilateral countermovement jumps (CMJ). Twenty-three basketball players completed two identical sessions which consisted four CMJs (two with each leg) CMJs. Mean peak values force, velocity power, impulse, jump height were obtained separately for leg using a dual force platform. All presented an acceptable (CV range = 4.05–9.98%) exceptions mean velocity, impulse...

The aim of the study is to determine physical performance, quality life and fatigue in colorectal cancer survivors compared with healthy controls. Twenty-three 22 matched controls were recruited for this case–control study. Fitness level (muscle trunk flexor endurance test, 6-min walk chair sit reach test flamingo test) was assessed both groups. Participants completed European Organization Research Treatment Cancer, Quality Life Questionnaire (QLQ-C30), Piper Fatigue Scale (PFS)...

The aim of the present paper was to determine relationship between linear sprinting and jump performance, dynamic balance change direction on young soccer players. Ninety-four healthy highly trained male players belonging same high-performance academy agreed participate in study [twenty-seven U16 (14.8 ± 0.4 years; height: 170.6 5.6 cm; body mass 64.7 8.4 kg)] [sixty-seven U19 (16.6 1.3 173.7 7.2 66.7 8.0 kg)]. Participants completed 3 testing sessions, 7 days apart. Data from a CMJ,...

Whereas 3D optical motion capture (OMC) systems are considered the gold standard for kinematic assessment in sport science, they present some drawbacks that limit its use field. Inertial measurement units (IMUs) incorporating gyroscopes have been as a more practical alternative. Thus, aim of study was to evaluate level agreement angular velocity between IMU and an OMC system varying tennis strokes intensities. In total, 240 signals from different body segments types (forehand, backhand...

Abstract The present study aimed to examine the influence of leg dominance on change direction (COD) performance. In this participated 94 healthy young highly trained male soccer players belonging from two categories (n = 27 vs. n 67; 14.81 ± 0.40 16.64 1.25 years age; 170.61 5.61 173.73 7.19 cm height; 64.74 8.44 66.70 7.95 kg weight, for U16 and U18, respectively). Fitness assessments were performed times in a period three months, included: (1) anthropometry measures, (2) 30–15 IFT, (3)...

The aim of this study was to analyze the relationships among physical cognitive ability, academic performance, and fitness regarding age sex in a group 187 students (53.48% male, 46.52% female) from one town Norwest Jaén, Andalusia (Spain), aged between 9 15 years old (M = 11.97, SD 1.99). D2 attention test used order selective concentration. Physical fitness, reflected on maximal oxygen uptake (VO2max), evaluated using 6 min Walking Test (6MWT). analysis taken indicated significant...

Accuracy and speed are related to performance in tennis. Most research has focused on little is known about the probabilistic structure of error (i.e. accuracy). In present study 31 advanced players performed a standardised test accuracy was measured using video analysis. Parameters describing 95% confidence ellipses (CEs) forehand backhand were calculated determine errors. Results showed that for both groundstrokes long axis CEs oriented almost parallel sideline. Despite greater ball...

Physical preparation is becoming more important in amateur tennis player training programs. Yet, when studying stroke performance these players, there a lack of evidence on the role functional power generating capacity. The aim study was therefore to determine whether capacity correlates with speed and accuracy forehand backhand groundstrokes players. We also studied correlation handgrip strength as classical measurement general muscle strength.A total 21 male aged 33.7±4.6 17.1±6.7 years...

caffeine is an ergogenic aid that still needs to be investigated in women's sports performance.

Background: Caffeine is an ergogenic aid that still needs to be investigated in female sports per-formance. Methods: Eight semi-professional volleyball (Heigth=1.63±0.08 m; Weigth= 66.67 ± 4,.74 kg) players voluntarily participated this study. A randomised crossover design was carried out. Players went through the caffeine and placebo condition. In condi-tion, participants consumed 5 mg/kg of caffeine. The evaluations were performed over two weeks training. both conditions, countermovement...

The aim of this study was to compare the effects two 10-week non-laboratory-based running retraining programs on foot kinematics and spatiotemporal parameters in recreational runners. One hundred three runners (30 ± 7.2 years old, 39% females) were randomly assigned either: a barefoot group (BAR) with 3 sessions/week over 10 weeks, cadence (CAD) who increased by 10% again weeks control (CON) did not perform any retraining. footstrike pattern, angle (FSA), spatial-temporal variables at...

Portable and low-cost motion capture systems are gaining importance for biomechanical analysis. The aim was to determine the concurrent validity reliability of NOTCH® inertial sensors measure elbow angle during tennis forehand at different sampling frequencies (100, 250 500 Hz), using an optical system with sub-millimetre accuracy as a reference. 15 competitive players performed forehands wearing NOTCH upper body marker-set signals from both were adjusted synchronized. error magnitude...

Chest bands have been the most used device to monitor heart rate during running. However, some runners feel uncomfortable with use of due friction and pressure exerted on chest. Thus, aim this study was determine if photoplethysmography (PPG) system Polar Precision Prime in Vantage M watch could replace chest (Polar V800-H10) same precision. A group 37 people, middle-distance long-distance professional runners, participated study. The submaximal speed determined using 50% participants’...

The purpose of this study was to compare the change Body Composition (BC) (height, weight, body fat percentage and muscle mass) as a function trimester category in sample young soccer players. Data collection performed five consecutive seasons (2016–2021). consisted 741 male football players different categories (Under 14 year old (U14), U15, U16, U17 U18) belonging high-performance academy. Considering trimestral all raw anthropometrics variables set new called (TC) each variable computed....

Few studies have analysed the effects of racket inertial parameters on hitting performance in young tennis players. The research aims to study relationship between swingweight and speed accuracy variables, Twenty-six players (13.1 ± 2.94 years) performed a forehand test with three rackets different (low, medium, high). Ball were calculated using radar, Zepp2 sensor photogrammetry. Significant differences found ball measured by Zepp2, low producing higher (p < 0.05; Mean SD; 108 43 vs. 102 47...

Despite being a key sport-specific characteristic in performance, there is no practical tool to assess the quality of pass basketball. The aim this study develop (the quality-pass index or Q-Pass) able deliver quantitative, measure passing skills based on combination accuracy, execution time and pattern variability. Temporal, kinematics performance parameters were analysed five different types passes (chest, bounce, crossover, between-the-leg behind-the-back) using field-based test, video...