Isometric Posterior Chain Peak Force Recovery Response Following Match-Play in Elite Youth Soccer Players: Associations with Relative Posterior Chain Strength

Abstract

The purpose of this study was to determine changes in two tests of lower limb isometric posterior chain force (IPC-F) following 90 min of match-play in elite youth soccer players and the interaction between relative strength and recovery profile. 14 players (age: 16 ± 2 years) performed 3 × 3 second IPC-F tests unilaterally at 30° and 90° of knee and hip flexion pre- and post-match, +24 h, +48 h, and +72 h post-match. Peak force was recorded for both limbs, combined and expressed relative to bodyweight (N/kg). A two-way repeated measures analysis of variance was performed to determine differences in force output between joint angles, time intervals and subjects. As there was no interaction between angle and time (p = 0.260), we report the change between timepoints as mean ∆ in 90° + 30° IPC-F. Relative to pre-match IPC-F, there were significant decreases post (∆ = −18%; p > 0.001) and at +24 h (∆ = −8%; p = 0.040), no significant difference at +48 h (∆ = 0%; p = 0.992) and a significant increase at +72 h (∆ = +12%; p = 0.005). There was a large inter-individual variability in recovery profile at both angles and substantial differences between post-match deficits at 90° (−10.8%) compared to 30° (−20.7%). Higher pre-match IPC-F was correlated with the magnitude of IPC-F deficits at both angles and all time points (r = 0.56 to 0.70, p = < 0.01) except for post-match 90°. Regular IPC-F monitoring to determine the magnitude of match-induced fatigue and track recovery may help inform decision-making regarding modifications to individual players training load, particularly as there is a large inter-individual variability in response to competition. Further research is warranted to better understand and address the finding that stronger players showed larger force deficits and slower recovery following match-play.

The impact of simulated soccer match-play on hip and hamstring strength in academy soccer players

“…Our results, indicating deficits of 9.9-15.7% from a relatively large sample identified strength decreases in excess of those regarded as substantial for injury risk (Paul et al, 2014;Wollin et al, 2018) and clearly greater than the typical error associated with the measurement system (6.3%) (Ryan et al, 2019). This in conjunction with previous research, may indicate an increased injury risk during congested fixture periods (Bueno et al, 2021;Carling et al, 2016;Constantine et al, 2019;Wollin et al, 2018), as players may be participating in matches with residual localised fatigue from previous activity (Silva et al, 2018). Figure 2 illustrates that there were inter-individual hip strength differences at all time points, with some participants experiencing more fatigue than others.…”

“…dose-response). Previous studies have identified a reduction in eccentric hamstring peak torque or strength of 12-20% after acute soccer activity, which may elevate hamstring injury risk late in matches and the following 48-72hrs (Bueno et al, 2021;Constantine et al, 2019;Huygaerts et al, 2020;Small et al, 2010). However, no studies to our knowledge have explored the combination of isometric hip and eccentric hamstring strength to offer a more complete insight into the lower limbdose-response.…”

Readaptación deportiva y retorno deportivo en el alto rendimiento. Del laboratorio al campo de juego: Una revisión de la literatura

“…En la actualidad, la tecnología ha permitido que el deporte de alto rendimiento estandarice diversos procesos como lo son los de rehabilitación, entrenamiento y readaptación (50,51). Dentro de la readaptación, el deportista debe tener parámetros de calidad de movimiento, fuerza, control neuromuscular, estabilidad que son medidas en el periodo de tiempo entre la rehabilitación de campo y la readaptación deportiva donde entre las principales herramientas utilizadas están: Encoder lineales y rotatorios, Dispositivos isométricos, máquinas de evaluación isocinetica, ergoespirometria, placas de fuerza, Nordbord, Groinbar, electromiografía de superficie, GPS, evaluación biomecánica y test de campo donde estos dispositivos y pruebas arrojan datos cuantitativos que permiten tomar decisiones desde un perfil estadístico y monitorizar el proceso de forma constante permitiendo la identificación de imbalances musculares, índices de relación entre los músculos, niveles de fatiga, consumo máximo de oxígeno en umbrales de rendimiento, activación neuromuscular y su relación con la lesión de forma específica (52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)(64). En la figura 5 se establecen las herramientas de monitorización del proceso de readaptación deportiva…”

“…relación entre los músculos, niveles de fatiga, consumo máximo de oxígeno en umbrales de rendimiento, activación neuromuscular y su relación con la lesión de forma específica (52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)(64). En la figura 5 se establecen las herramientas de monitorización del proceso de readaptación deportiva Figura 5 (Monitorización del proceso de readaptación deportiva) Fuente de elaboración propia 2022 La readaptación de gestos deportivos en campo es uno de los pilares más importantes en el proceso de retorno deportivo donde se deben realizar ejercicios de tipo funcional que estimulen distintos tipos de gestos tales como patrones lineales, patrones laterales, patrones diagonales, frenos, desaceleraciones, aceleraciones, gestos unipodales, gestos bilaterales, estabilidad unipodal, estabilidad ante eventos inesperados, movimientos multidireccionales, estabilidad, equilibrio, salto, toma de decisiones basados en gestos del deporte (15)(16)(17).…”

The Role of Veracity on the Load Monitoring of Professional Soccer Players: A Systematic Review in the Face of the Big Data Era

“…Only one study had a high risk of bias, with a score ≤4 (see Table S1). There were 88 observational studies (i.e., 94%), with 82 prospective cohort studies [41,[43][44][45][46][47][48][49]51,52,[54][55][56][59][60][61][86][87][88]90,[92][93][94][95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][111][112][113][114][116][117][118][119][120][121][122][123]…”