04 Jul FSI Football Science Update
Relative skeletal maturity status affects injury burden in U14 elite academy football players.
Monasterio X, Bidaurrazaga-Letona I, Larruskain J, Lekue JA, Diaz-Beitia G, Santisteban J, Martin-Garetxana I, Gil SM.
This study in 183 U14 elite academy football players in 9 years found that early maturers had an injury burden 2.8-times higher than late maturers, with muscle injuries 4-times more burdensome and joint/ligament injuries 12- times more burdensome, what should be taken into account for targeted injury prevention programs.
The Relationship between the Hamstring-to-Quadriceps Ratio and Jumping and Sprinting Abilities of Young Male Soccer Players.
Diker G, Struzik A, Ön S, Zileli R.
This study in 26 young elite soccer players found a significant relationship was obtained between the isokinetic H/Q ratio (60°/s) and 30 m sprint time (r = 0.47) what may indicate an important role of knee joint extensors in sprinting performance. The H/Q ratio was not significantly associated with the CMJ, SJ or 10 m sprint performance.
The effect of mid-season coach turnover on running match performance and match outcome in professional soccer players.
Radzimiński Ł, Padrón-Cabo A, Modric T, Andrzejewski M, Versic S, Chmura P, Sekulic D, Konefał M.
This study on 23 mid-season coach turnovers in the Polish Ekstraklasa (highest level of competition in Poland) during seasons 2019 to 2021 found that new coaches collected a significantly higher number of points than dismissed coaches, with increased physical performance in total and high-intensity running distance. However, this effect disappears after a period of approximately 5 games.
Impact of Cold-Water Immersion Compared with Passive Recovery Following a Single Bout of Strenuous Exercise on Athletic Performance in Physically Active Participants: A Systematic Review with Meta-analysis and Meta-regression.
Moore E, Fuller JT, Buckley JD, Saunders S, Halson SL, Broatch JR, Bellenger CR.
This systematic review of 52 studies found that cold-water immersion (CWI) improved the recovery of muscular power 24 h after eccentric and high-intensity exercise, and reduced serum CK 24 h after high-intensity exercise. CWI also improved muscle soreness and perceived feelings of recovery 24 h after high-intensity exercise. Shorter time and lower temperatures were related to the largest beneficial effects on serum CK and endurance performance after high-intensity exercise.
Drop jump neuromuscular performance qualities associated with maximal horizontal deceleration ability in team sport athletes.
Harper DJ, Cohen DD, Rhodes D, Carling C, Kiely J.
This study on 29 university athletes performing Drop Jumps on force plates and maximal horizontal decelerations following a 20 m acceleration measured with radar found that the athletes with greater drop jump reactive strength index RSI demonstrated superior horizontal deceleration ability. Drop jump RSI had a greater association with the early compared to the late horizontal deceleration sub-phase. Of the drop jump kinetic variables examined, concentric mean force had the largest associations with horizontal deceleration ability.