Wearable Inertial Measurement Unit to Measure External Load: A Full-Season Study in Professional Soccer Players

Nobari, Hadi; Gonçalves, Luiz Guilherme Cruz; Aquino, Rodrigo; Clemente, Filipe Manuel; Pueo, Basílio; Carlos‐Vivas, Jorge; Pérez‐Gómez, Jorge; Ardigò, Luca Paolo

doi:10.3390/app12031140

Cited by 6 publications

(5 citation statements)

References 67 publications

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“…Many studies, ours included, have referred to the individualization of loads, taking into account the position occupied by the players. This is reinforced by Nobari et al ( 2022 ) who suggest that coaches should be aware of the specific external load demands to prescribe more representative training tasks for each positional role. However, it is necessary to go even further and meet the needs not only of each playing position but also of each player.…”

Section: Discussionmentioning

confidence: 99%

Daily and weekly external loads in the microcycle: Characterization and comparison between playing positions on amateur soccer

Miguel

Cortez²,

Romero³

et al. 2022

Front. Sports Act. Living

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Ensuring adequate levels of training and recovery to maximize player performance is critical; however, there are methodological challenges in designing a periodized training program for soccer teams. This study aims to describe and characterize the daily and weekly external load in an amateur soccer team and based on the weighting factors determined by the match reference, compare the external loads between playing positions. Twenty-four amateur soccer players (22.3 ± 1.7 years) were monitored using a global positioning system. Data collected comprises 19 competitive microcycles with a standard structure composed of 3 training sessions (matchday-5, matchday-3, and matchday-2) and one match. Match-reference values were calculated as the mean of the five best values recorded during official matches. The results show, on matchday-5 session, the existence of significant differences between playing positions to relative total distance covered (p = 0.050), relative sprint distance (p = 0.001), relative moderate-intensity accelerations (p < 0.001), relative high-intensity accelerations (p = 0.003), relative moderate-intensity decelerations (p < 0.001), and relative high-intensity decelerations (p = 0.017). On matchday-3 session, there are significant differences to relative very high-speed running distance (p = 0.017) and relative moderate-intensity decelerations (p = 0.014). On matchday-2 session, there are significant differences to relative high-speed running distance (p = 0.025), relative very high-speed running distance (p = 0.008), and relative moderate-intensity decelerations (p < 0.001). Weekly significant differences are observed between the playing positions to relative moderate-intensity accelerations (p = 0.002), relative high-intensity accelerations (p < 0.001), and relative moderate-intensity decelerations (p < 0.001). The weekly load is characterized by a greater weighting on accelerations and decelerations, compared to distances at very-high speed and sprint. The training loads must respect a standard training model that contemplates the individualization of the physical demands of the match, for each playing position, as for each individual.

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Section: Discussionmentioning

confidence: 99%

Daily and weekly external loads in the microcycle: Characterization and comparison between playing positions on amateur soccer

Miguel

Cortez²,

Romero³

et al. 2022

Front. Sports Act. Living

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“…The inclusion criterion for the participants was (i) at least 3 training sessions per week. The exclusion criteria were (i) each player due to prolonged injury or a lack of participation in training for at least 2 weeks were excluded, and (ii) goalkeepers were excluded from the study due to differences in sports activity and variables used (Nobari et al, 2022). This research was conducted by the training coaches of the club after setting with the relevant authorities in the club.…”

Section: Participantsmentioning

confidence: 99%

Within-week variation of training load in Turkish elite soccer players by players positions (a GPS technology study)

BAYRAKTAR,

GÜNAY,

Çene

et al. 2024

Preprint

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The of this study was to analyze the variation between within-week and between-playing positions on the locomotor and mechanical demands of soccer players. 19 elite soccer players of a team competing in the Turkish First League were included in the research. 86 training sessions of this team were evaluated. The differences between training performance metrics among microcycles for each position are revealed with repeated ANOVA and the differences between training performance metrics among positions in each microcycle are revealed with ANOVA. All the number of deceleration and acceleration per minute variables show statistical differences among the cycles for the defenders and midfielders but not for the forwards. These data suggested that there is a need to plan for different position-specific training stimuli in elite soccer teams for high performance outputs. We believe that these results can be used to determine positional demands by sports scientists and data analysts. Keywords: Soccer, TRIMP, Workload, Players, Heart Rate, GPS, Microcycles.

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“…In the next step, the scaled BL (SBLC) was computed by using the accelerometer logging rate (100 Hz) and exercise factor (EF) (SBLC = USBL/100/EF). At last, the BL value was determined through the following calculation: BL = BL + SBLC [32].…”

Section: Monitoring With Wearable Sensor Technologymentioning

confidence: 99%

The influence of opponent level on professional soccer players’ training and match performance assessed by using wearable sensor technology

Nobari¹,

Ramachandran²,

Oliveira³

2022

Hum Mov.

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Purpose. The study aim was 2-fold: to quantify and compare the weekly external training load that preceded matches; to compare in-match activities depending on the opponent level (top, middle, bottom) in a top-level team from the first professional Asian national league. Methods. The load for 6 matches played against top-, 11 against middle-, and 11 against bottom-level teams was monitored. With a 15-Hz Global Positioning System, total duration, total distance, high-speed (18-23 km), DecZ2 (-2 to -4 m • s -2 ), DecZ3 (< -4 m • s -2 ), player load, and metabolic power were collected in 12 players. Results. DecZ3 showed higher values against top-level compared with middle-(effect size [ES] = 0.91) and bottom-level opponents (ES = 1.50). The training was significantly longer against middle-level compared with top-and bottom-level opponents (all, p 0.001). Total distance was bigger against middle-level compared with top-(p = 0.011, ES = -0.92) and bottom-level opponents (p = 0.027, ES = 1.50). AccZ2 presented higher values when middle-level came close compared with bottom-level opponents (p = 0.05, ES = 0.79). Conclusions. Opponent's level influences the load experienced by soccer players during matches. Total distance, highspeed running distance, AccZ1, and AccZ2 exhibited higher training values when a win or a draw approached. Decelerations in all zones were highest in matches against top-level teams.

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Wearable Inertial Measurement Unit to Measure External Load: A Full-Season Study in Professional Soccer Players

Cited by 6 publications

References 67 publications

Daily and weekly external loads in the microcycle: Characterization and comparison between playing positions on amateur soccer

Daily and weekly external loads in the microcycle: Characterization and comparison between playing positions on amateur soccer

Within-week variation of training load in Turkish elite soccer players by players positions (a GPS technology study)

The influence of opponent level on professional soccer players’ training and match performance assessed by using wearable sensor technology

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