Purpose: To assess the acute alterations in triaxial accelerometry (PlayerLoad [PL(VM)]) and its individual axial planes (anteroposterior PlayerLoad [PL(AP)], mediolateral PlayerLoad [PL(ML)], and vertical PlayerLoad [PL(V)]) during a standardized 90-min soccer match-play simulation (SAFT90). Secondary aims of the study were to assess the test-retest reliability and anatomical location of the devices.
Methods: Semiprofessional (n = 5) and university (n = 15) soccer players completed 3 trials (1 familiarization, 2 experimental) of SAFT90. PlayerLoad and its individual planes were measured continuously using micromechanical-electrical systems (MEMS) positioned at the scapulae (SCAP) and near the center of mass (COM).
Results: There were no between-halves differences in PL(VM); however, within-half increases were recorded at the COM, but only during the 1st half at the SCAP. Greater contributions to PL(VM) were provided by PL(V) and PL(ML) when derived from the SCAP and COM, respectively. PL(VM) (COM 1451 ± 168, SCAP 1029 ± 113), PL(AP) (COM 503 ± 99, SCAP 345 ± 61), PL(ML) (COM 712 ± 124, SCAP 348 ± 61), and PL(V) (COM 797 ± 184, SCAP 688 ± 124) were significantly greater at the COM than at the SCAP. Moderate and high test-retest reliability was observed for PlayerLoad and its individual planes at both locations (ICC .80-.99).
Conclusions: PlayerLoad and its individual planes are reliable measures during SAFT90 and detected within-match changes in movement strategy when the unit was placed at the COM, which may have implications for fatigue management. Inferring alterations in lower-limb movement strategies from MEMS units positioned at the SCAP should be undertaken with caution.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1123/ijspp.2014-0582 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Description and Classification of Training Drills, Based on Biomechanical and Physiological Load, in Elite Basketball.
Sensors (Basel)
January 2025
Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
The aim of this study was to understand and describe the physiological and biomechanical demands of various tasks used in basketball training and, subsequently, to provide a practical application of these tasks in a typical training week. Twelve basketball players had their external load variables monitored across 179 training sessions (2896 samples) using local positioning system technology. These variables included total distance covered, distance covered at various intensity levels, accelerations, decelerations, PlayerLoad™, and explosive efforts.
View Article and Find Full Text PDFThe influence of aerobic capacity on the loads and intensities of mixed martial arts sparring bouts.
J Sports Sci
November 2024
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
Article Synopsis
- The study investigates the relationship between aerobic capacity and performance in mixed martial arts (MMA), focusing on the impact of aerobic variables during sparring bouts.
- Ten MMA participants underwent a treadmill test to measure their maximum oxygen uptake (V̇Omax) and engaged in sparring sessions while their external load and internal intensity were monitored.
- Results showed that higher aerobic capacity (V̇Omax ≥ 53 ml∙kg∙min) correlated with better performance, as indicated by lower perceived exertion and improved load metrics during sparring, suggesting that aerobic training is important for MMA athletes.
Training and Game Loads Across Noncongested and Congested Weekly Microcycles During the Regular Season in a Semiprofessional Women's Basketball Team.
Int J Sports Physiol Perform
December 2024
School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD, Australia.
Purpose: To quantify and compare loads encountered in individual training sessions and games during noncongested and congested weeks in semiprofessional women basketball players.
Methods: Using an observational, longitudinal design, 12 players from the same team had their external (PlayerLoad, relative PlayerLoad, and total and high-intensity inertial movement analysis variables) and internal load (session rating of perceived exertion [sRPE], sRPE-load, percentage of heart rate peak, and modified summated-heart-rate-zones load) monitored across a regular season. Training and game data were categorized into noncongested (0-1 game) and congested weeks (2-3 games).
Inside the Defensive Playbook: Pick-and-Roll Tactical Adjustments Impact the External and Internal Loads During Small-Sided Games in Female Basketball Players.
Int J Sports Physiol Perform
December 2024
Department of Movement, Human and Health Sciences, University of Rome "Foro Italico,"Rome, Italy.
Purpose: This study aimed to assess the effect of playing different pick-and-roll (PnR) defensive tactical options during small-sided games (SSGs) on external and internal loads in female basketball players.
Methods: Twelve female basketball players (age 28 [2] y; stature 175 [6] cm; body mass 65 [7] kg; playing experience 18 [4] y) belonging to a team competing in the Lithuanian second division were recruited for this study. Across 3 experimental sessions and in a randomized order, players performed 3 SSGs sharing the same features but using 3 defensive strategies on the middle PnR action: Switch, Trap, and Drop.
Quantifying the training demands of a highly trained male youth basketball players by year, term and position.
J Sports Sci
September 2024
School of Sport, Exercise and Rehabilitation, Faculty of Health, University of Technology Sydney, NSW, Sydney, Australia.
This study describes the training demands of highly trained male youth basketball players, based on training year, term and playing position. Data was collected from 41 male youth basketballers over two seasons from all on-court coach-led training sessions utilising an LPS. Linear mixed-models and pairwise comparisons were used to analyse by training year (Y1, Y2 and Y3), term (T1, T2, T3 and T4) and playing position (Backcourt, Frontcourt).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!