Organisations governing football codes worldwide continually seek to optimise the balance between their match calendar and commercial revenue. For many competitions, the result is more matches, and consequently, increased workload and travel demands for players. However, as competitions expand, the greater volume and/or intensity of workload challenges coaches’ best practices in balancing performance with recovery and injury risk. This current perspective article aims to overview the annual training and competition calendar of professional football codes and competitions internationally. There is a vast difference in the length and structure of each component of football macrocycles, which appears dependent on the physiological capabilities required to compete in each code successfully. However, there is little research to justify the season’s structure of any football code. The importance of athlete physical and mental health is highlighted, and discussed the limitations and restrictions governing bodies implement to protect players. In conclusion, future research to improve the structure of the annual training and match calendar should incorporate a framework of both physiological and psychological components to support elite football athletes better.
This systematic review and meta-analysis evaluated the validity of tests / markers of athletic readiness to predict physical performance in elite team and individual sport athletes. Ovid MEDLINE, Embase, Emcare, Scopus and SPORT Discus databases were searched from inception until 15 March 2023. Included articles examined physiological and psychological tests / markers of athletic readiness prior to a physical performance measure. 165 studies were included in the systematic review and 27 studies included in the meta-analysis. 20 markers / tests of athletic readiness were identified, of which five were meta-analysed. Countermovement jump (CMJ) jump height had a large correlation with improved 10m sprint speed / time (r = 0.69; p = .00), but not maximal velocity (r = 0.46; p = .57). Non-significant correlations were observed for peak power (r = 0.13; p = .87) and jump height (r = 0.70; p = .17) from squat jump, and 10m sprint speed / time. CMJ jump height (r = 0.38; p = .41) and salivary cortisol (r = -0.01; p = .99) did not correlate with total distance. Sub-maximal exercise heart rate (r = -0.65; p = .47) and heart rate variability (r = 0.66; p = .31) did not correlate with Yo-Yo Intermittent Recovery Test 1 performance. No correlation was observed between blood C-reactive protein and competition load (r = 0.33; p = .89). CMJ jump height can predict sprint and acceleration qualities in elite athletes. The validity of the other readiness tests / markers meta-analysed warrants further investigation.
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