There is interest in the accuracy and inter-unit reliability of position-tracking systems to monitor players. Research into this technology, although relatively recent, has grown exponentially last years, it difficult find professional team sport that does not use Global Positioning System (GPS) technology at least. The aim study know both GPS-based Ultra Wide Band (UWB)-based on a soccer field their inter- intra-unit reliability. A secondary compare them for practical applications science....

The purpose of this study was to assess the accuracy positional data and inter-unit reliability an ultra-wide-band (UWB) tracking system. Four well-trained males performed five courses designed for analysis x- y-coordinate analysis, specifically related distance variation between UWB fixed reference lines a basketball court. This achieved using geographic information system (GIS) mapping software that calculated, each interval participant, from main axis displacement opposite side court 0.5...

Abstract The aims of this study were to: (1) identify the representative external load profile match‐play in Spanish professional soccer players by principal components analysis (PCA), and (2) analyse effect match location (home vs away), outcome (win draw loss) length microcycle (5 6 7 8 9 days) on profile. Data collected during one season consisting 42 matches LaLiga 123 11 variables selected after PCA. TD, total distance covered; DIS 0–6 : from 0 to km/h; 21–24 21 24 HSRD: high‐speed...

Abstract Current studies have reported high accuracy in global positioning system (GPS) and recently developed ultra‐wideband (UWB)‐based tracking systems for monitoring time – motion patterns. The reliability of both may be different tactical analysis application, an aspect that has never been studied previously. aims the present study were: (i) to determine compare GPS UWB technologies soccer players’ positions (ii) application systems. Following institutional ethical approval...

An understanding of basketball physical demands during official matches is fundamental for designing specific training, tactical and strategic plans as well recovery methods congested fixture periods. Such assessments can be performed using wearable indoor time motion tracking systems. The purpose this study was to analyze the time-motion profile under 18-years age (U'18) players compare their in relation team ranking, playing position, match periods consecutive a seven-day tournament....

Electronic performance and tracking systems (EPTS) microelectromechanical (MEMS) allow the measurement of training load (TL) collective behavior in team sports so that match can be optimized. Despite frequent use radio-frequency (RF) technology (i.e., global positioning navigation (GNSS/global (GPS)) and, local position (LPS)) MEMS research, there is no protocol must followed, nor are any set guidelines for evaluating quality data collection process studies. Thus, this study aims to suggest...

ENWEndNote BIBJabRef, Mendeley RISPapers, Reference Manager, RefWorks, Zotero AMA Oliva-Lozano J, Rojas-Valverde D, Gómez-Carmona C, Fortes V, Pino-Ortega J. Worst case scenario match analysis and contextual variables in professional soccer players: a longitudinal study. Biology of Sport. 2020;37(4):429-436. doi:10.5114/biolsport.2020.97067. APA Oliva-Lozano, J., Rojas-Valverde, D., Gómez-Carmona, C., Fortes, V., & Pino-Ortega, (2020). Sport, 37(4), 429-436....

The purposes of the present study are: (a) to characterize external (eTL) and internal load (iTL) official matches small-sided games (SSGs) in relation their objective, (b) compare demands between SSG, (c) analyze SSG requirements during a one-month competition period. Twenty under-18 national-level soccer players were recorded using WIMUTM inertial devices (RealTrack Systems, Almeria, Spain) four 12 training sessions where SSGs with different objectives performed: (SSG1) keeping ball;...

There has recently been an increase in quantification and objective analysis of soccer performance due to improvements technology using load indexes such as Player Load (PL) Metabolic Power (MP). The objectives this study were: (1) describe the PL MP competition according specific role, match-to- match variation, periods play, game location status periods, (2) analyze relationship between both indexes. Twenty-one national-level players were distributed following positional roles: external...

Muscle and kidney injury in endurance athletes is worrying for health, its relationship with physical external workload (eWL) needs to be explored. This study aimed analyze which eWL indexes have more influence on muscle biomarkers. 20 well-trained trail runners (age = 38.95 ± 9.99 years) ran ~35.27 km (thermal-index 23.2 1.8 °C, cumulative-ascend 1815 m) wearing inertial measurement units (IMU) six different spots (malleolus peroneus [MPleft/MPright], vastus lateralis [VLleft/VLright],...

This study presents a proposal for the integration of photocell data (time) into an inertial system. We divert signal emitted by infrared cell (ChronoJump, Spain) towards device (WIMU PRO, RealTrack System, Almeria, ANT + transmitter to make mark that is later visualised in S PRO software (RealTrack Spain). The objective this show validity system measure sprint and sport task time integrating photocells For purpose, we compared 108 runs (at 20, 150 400 m) between (gold standard). results...

Currently, the use of accelerometry to analyze training and competition is on increase. Thus, accelerometers must be reliable when calculating different variables from raw data. The purpose this investigation was assess reliability triaxial that contain inertial devices for measuring external loads in sports. Four eight WIMU PRO™ (RealTrack Systems, Almeria, Spain) were assessed laboratory specific sport conditions, respectively. test performed static (with without stress) dynamic (10 30 Hz...

ABSTRACT Gómez-Carmona, CD, Bastida-Castillo, A, González-Custodio, Olcina, G, and Pino-Ortega, J. Using an inertial device (WIMU PRO) to quantify neuromuscular load in running: reliability, convergent validity, influence of type surface location. J Strength Cond Res 34(2): 365–373, 2020—Currently, the use accelerometers sport is increasing, thus, devices are required be valid reliable. This study tested (a) reliability validity WIMU PRO measure PlayerLoad (PL) (b) speed, location, where...

With the development of new microsensor technology to assess load in sports, some indicators external through accelerometry-based data have been created by sport companies. Thus, study aim was analyze agreement between different (ABELIs) available science. A U-16 male soccer team assessed during three official matches, divided periods, obtain 3-D accelerometry (x, y and z axes). An average 1,420,000 points analyzed per axis player. The ABELIs were calculated using this information, them...

The purpose of the present study was to: (a) assess centripetal force (CentF) and changes direction (COD) in elite soccer players according to playing position (central defender, CD; lateral LD; central midfielder, CM; LM; forward, FW), laterality (right-footed vs. left-footed) field zone lateral), (b) analyze relationship between anthropometric characteristics (age, weight, height, body mass fat mass) non-linear locomotion workload. Thirty professional (age: 26.57±5.56 years) were tracked...

Abstract The monitoring of the high intensity activity-demands profile during official matches (OMs) and training sessions (TSs) provides a deeper understanding relationship between competition loads as well players’ fitness characteristics. aims this study were to: 1) describe match in U-19 soccer players; 2) compare depending on type session (OM or TS) throughout match-weeks; 3) differentiate profiles location (home away). Twenty-five Spanish players monitored TSs OMs for one-month...