Variations of training load, monotony, and strain and dose-response relationships with maximal aerobic speed, maximal oxygen uptake, and isokinetic strength in professional soccer players

This study aimed to identify variations in weekly training load, training monotony, and training strain across a 10-week period (during both, pre- and in-season phases); and to analyze the dose-response relationships between training markers and maximal aerobic speed (MAS), maximal oxygen uptake, an...

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Bibliographic Details
Published in:PloS one 2019-12, Vol.14 (12), p.e0225522-e0225522
Main Authors: Clemente, Filipe Manuel, Clark, Cain, Castillo, Daniel, Sarmento, Hugo, Nikolaidis, Pantelis Theodoros, Rosemann, Thomas, Knechtle, Beat
Format: Article
Language:English
Subjects:
Adult
Analysis
Biology and Life Sciences
Clark, Daniel
Correlation
Dose-response effects
Exercise
Exercise - physiology
Fitness
Football
Global positioning systems
GPS
Humans
Isokinetic strength
Load
Medicine and Health Sciences
Monotony
Muscle Strength - physiology
Oxygen
Oxygen Consumption - physiology
Oxygen uptake
Peak load
Physical Fitness
Physical Sciences
Physical training
Physiology
Players
Primary care
Professional soccer
Research and Analysis Methods
Soccer
Soccer players
Social Sciences
Sports injuries
Strain
Team sports
Training
Variation
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Summary:This study aimed to identify variations in weekly training load, training monotony, and training strain across a 10-week period (during both, pre- and in-season phases); and to analyze the dose-response relationships between training markers and maximal aerobic speed (MAS), maximal oxygen uptake, and isokinetic strength. Twenty-seven professional soccer players (24.9±3.5 years old) were monitored across the 10-week period using global positioning system units. Players were also tested for maximal aerobic speed, maximal oxygen uptake, and isokinetic strength before and after 10 weeks of training. Large positive correlations were found between sum of training load and extension peak torque in the right lower limb (r = 0.57, 90%CI[0.15;0.82]) and the ratio agonist/antagonist in the right lower limb (r = 0.51, [0.06;0.78]). It was observed that loading measures fluctuated across the period of the study and that the load was meaningfully associated with changes in the fitness status of players. However, those magnitudes of correlations were small-to-large, suggesting that variations in fitness level cannot be exclusively explained by the accumulated load and loading profile.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0225522