Abstract
and ‘possibly’ trivial (5.5, 0.41 to 11%) differences between September and May. Within-player variation throughout the in-season period, representing the typical error of the estimate was 23%, 22 – 25% and between-player, 38, 33 – 44%. We observed ‘most likely’ moderate improvements (32, 17 to 49%) over three years that were moderately associated with changes in maturation (r = 0.46, 0.13 to 0.70). A minimum change of ≥44% is required to detect ‘likely’ improvements in YYIRL1 performance on an individual basis. Girls football players appear responsive to pre-season training and to long-term exposure to systematic training.
| Original language | English |
|---|---|
| Journal | Science and Medicine in Football |
| Early online date | 25 Apr 2019 |
| DOIs | |
| Publication status | E-pub ahead of print - 25 Apr 2019 |
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Application and interpretation of the yo-yo intermittent recovery test to the long-term physical development of girls association football players. / Wright, Matthew; Innerd, Alison.
In: Science and Medicine in Football, 25.04.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Application and interpretation of the yo-yo intermittent recovery test to the long-term physical development of girls association football players
AU - Wright, Matthew
AU - Innerd, Alison
PY - 2019/4/25
Y1 - 2019/4/25
N2 - We aimed examine yo-yo intermittent recovery test, level 1 (YYIRL1) performance in girls football players. Mixed-linear modelling was used to determine within-season changes in YYIRL1 performance and between and within- player variation over four years, at four time points (July, September, December and May) in 86 players (474 observations). Twenty-three players, tested over three consecutive years were retained for further analysis. Magnitude-based inferences were used to quantify annual change in performance on a group and individual level. Within player correlations were used to determine the association between YYIRL1 and maturation. ‘Very likely’ small (14, ±90% confidence interval 8.1 – 20%) improvements were observed between July and Septemberand ‘possibly’ trivial (5.5, 0.41 to 11%) differences between September and May. Within-player variation throughout the in-season period, representing the typical error of the estimate was 23%, 22 – 25% and between-player, 38, 33 – 44%. We observed ‘most likely’ moderate improvements (32, 17 to 49%) over three years that were moderately associated with changes in maturation (r = 0.46, 0.13 to 0.70). A minimum change of ≥44% is required to detect ‘likely’ improvements in YYIRL1 performance on an individual basis. Girls football players appear responsive to pre-season training and to long-term exposure to systematic training.
AB - We aimed examine yo-yo intermittent recovery test, level 1 (YYIRL1) performance in girls football players. Mixed-linear modelling was used to determine within-season changes in YYIRL1 performance and between and within- player variation over four years, at four time points (July, September, December and May) in 86 players (474 observations). Twenty-three players, tested over three consecutive years were retained for further analysis. Magnitude-based inferences were used to quantify annual change in performance on a group and individual level. Within player correlations were used to determine the association between YYIRL1 and maturation. ‘Very likely’ small (14, ±90% confidence interval 8.1 – 20%) improvements were observed between July and Septemberand ‘possibly’ trivial (5.5, 0.41 to 11%) differences between September and May. Within-player variation throughout the in-season period, representing the typical error of the estimate was 23%, 22 – 25% and between-player, 38, 33 – 44%. We observed ‘most likely’ moderate improvements (32, 17 to 49%) over three years that were moderately associated with changes in maturation (r = 0.46, 0.13 to 0.70). A minimum change of ≥44% is required to detect ‘likely’ improvements in YYIRL1 performance on an individual basis. Girls football players appear responsive to pre-season training and to long-term exposure to systematic training.
U2 - 10.1080/24733938.2019.1609071
DO - 10.1080/24733938.2019.1609071
M3 - Article
JO - Science and Medicine in Football
JF - Science and Medicine in Football
SN - 2473-3938
ER -