![]() ![]() A total of 45 LE-ST injuries were recorded over the season. ![]() The predictive ability (i.e., area under the receiver operating characteristic curve and F-score) of several screening models was analysed and compared to select the one with the highest scores. Afterwards, all LE-ST injuries were monitored over one competitive season. Players were engaged in a pre-season assessment that covered several personal characteristics (e.g., anthropometric measures), psychological constructs (e.g., trait-anxiety), and physical fitness and neuromuscular measures (e.g., range of motion, landing kinematics). A sample of 260 male youth soccer players from the academies of five different Spanish non-professional clubs completed the follow-up. The aim of this study was twofold: a) to build models using machine learning techniques on data from an extensive screening battery to prospectively predict lower extremity soft tissue (LE-ST) injuries in non-elite male youth soccer players, and b) to compare models' performance scores (i.e., predictive accuracy) to select the best fit. While athletes did not display a familiarization effect after performing the novel tasks within the MCS for the first time, raters showed improved error detection on repeated viewing of the same movement. Irrespective of experience, raters demonstrated high variability in rating single movements, yet preliminary evidence suggests the MCS composite score could reliably assess movement competency. Experts detected more movement errors than novices and both rating groups improved their detection of errors with repeated viewings of the same movement. The composite score did not increase with task familiarization by the athletes. Based on kappa score and percentage agreement, both inter- and intra-rater reliability were highly variable for individual movements but consistently high (>0.70) for the MCS composite score. Kappa score, percentage agreement and intra-class correlation were calculated for each movement individually and for the composite score.įifty-one pre-elite youth athletes (15.0☑.6 years n=33 athletics, n=10 BMX and n=8 surfing) were included in the study. Performances were rated three times with a minimal four-week wash out between testing sessions, each in randomized order by 12 raters (3 expert, 9 novice), using a three-point scale. Pre-elite youth athletes (n=51) were recruited and videotaped while performing a MCS comprising nine dynamic movements in three separate trials. ![]() This study aimed to: (i) determine the inter- and intra-rater reliability of a sport specific field-based MCS in novice and expert raters using different viewing methods (single and multiple views) and (ii) ascertain whether there were familiarization effects from repeated exposure for either raters or participants. However, there is conflicting evidence regarding MCS reliability. Movement competency screens (MCSs) are commonly used by coaches and clinicians to assess injury risk. Furthermore, the asymmetry values assessed qualitatively (TJA) are associated with the asymmetry values assessed quantitatively (difference in jump achieved with each limb in the SL-CMJ test) in younger categories. The analysis of the jumping and landing pattern using TJA allowed us to identify that the lower extremity valgus at landing, foot contact timing not equal and landing contact noise are the main biomechanical deficits in young female handball players. In the U12 category, the female players presented larger interlimb asymmetry magnitudes in the SL-CMJ test they also obtained higher scores in the qualitative criteria of the TJA test that referred to asymmetry (r = 0.43 p = 0.027). The female U12 category players obtained the highest scores in the TJA and there were significant differences between the U12 (12.11 ± 1.97) and U14 (10.89 ± 1.74) categories (p = 0.017 ES = 0.374). Sixty-one young female handball players (age: 14.3 ± 1.5 years) were distributed into three groups: U12, U14 and U16 and performed the TJA test and the single leg countermovement jump (SL-CMJ). A secondary aim was to relate the qualitative asymmetry values detected using the TJA to the quantitative asymmetry values detected starting from the single leg countermovement jump (SL-CMJ). The main aim of this study was to analyse and compare, by chronological age, jumping and landing deficits in young female handball players using the Tuck Jump Assessment (TJA). Neuromuscular and biomechanical imbalances that exist in jumping and landing actions should be examined in order to intervene to decrease the risk of ACL injury. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |