TY  - JOUR
A1  - Davies, Michael J.
A1  - Drury, Benjamin
A1  - Ramirez-Campillo, Rodrigo
A1  - Chaabene, Helmi
A1  - Moran, Jason
T1  - Effect of plyometric training and biological maturation on jump and change of direction ability in female youth
JF  - Journal of strength and conditioning research : the research journal of the NSCA / National Strength & Conditioning Association
N2  - Biological maturation has been shown to affect male youths' responses to plyometric training (PT). However, to date, no researcher has examined the effect of maturation on the effects of PT in female youth. We undertook the first controlled intervention study to examine this, focusing on adaptive responses to countermovement jump (CMJ), reactive strength index (RSI), and change of direction (COD) performance in groups of female youth divided by maturation status (years from peak height velocity [PHV]). The training program lasted 7 weeks with subjects undertaking 2 sessions of PT per week. In the mid-PHV group, there was a small increase (effect size; 90% confidence interval = 0.40; -0.23 to 1.03) in CMJ performance. No changes were observed in the post-PHV group (0.02; -0.68 to 0.72). For RSI, there was a moderate increase in the mid-PHV group (0.94; 0.29-1.59) with only a trivial increase in the post-PHV group (0.06; -0.65 to 0.76). The intervention exerted no positive effect on COD performance in any group. Plyometric training seems to enhance CMJ and RSI in female youth, although the magnitude of adaptation could be affected by maturation status. A twice-per-week program of multidirectional jumping and hopping, with bilateral and unilateral components, can be used as a preparatory precursor to physical education classes or recreational sport.
KW  - girls
KW  - exercise
KW  - sport
KW  - athlete
Y1  - 2021
U6  - https://doi.org/10.1519/JSC.0000000000003216
SN  - 1064-8011
SN  - 1533-4287
VL  - 35
IS  - 10
SP  - 2690
EP  - 2697
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - JOUR
A1  - Gerber, Markus
A1  - Brand, Ralf
A1  - Antoniewicz, Franziska
A1  - Isoard-Gautheur, Sandrine
A1  - Gustafsson, Henrik
A1  - Bianchi, Renzo
A1  - Colledge, Flora
A1  - Madigan, Daniel J.
A1  - Brand, Serge
A1  - Ludyga, Sebastian
T1  - Implicit and explicit attitudes towards sport among young elite athletes with high versus low burnout symptoms
JF  - Journal of sports sciences
N2  - The development of cynical attitudes towards elite sport is a core symptom of athlete burnout and has been associated with dropout from elite sport. To date, this phenomenon has mainly been studied by investigating explicit attitudes towards sport, whereas athletes’ automatic evaluations (i.e. implicit attitudes) that have been shown to influence behavior as well were not considered. This study aimed to compare explicit and implicit attitudes towards sport of young elite athletes with high (N = 24) versus low (N = 26) burnout symptoms. Using self-reported measures, general and athlete burnout symptoms were assessed. Additionally, a single-target implicit association test was administered to examine participants’ automatic evaluation of sport. Statistical analysis revealed greater emotional/physical exhaustion and sport devaluation in athletes reporting high compared to low burnout symptoms. Implicit attitudes towards sport did not significantly differ between the groups. Furthermore, no significant correlations were observed between different athlete burnout symptoms and implicit attitudes. Athletes with high burnout symptoms show a tendency to explicitly detach themselves from sport, thus fostering sport devaluation as a core symptom of athlete burnout. However, this process does not seem to be reflected in their implicit attitudes towards sport.
KW  - Adolescents
KW  - automatic evaluations
KW  - dual mode model
KW  - reflective processes
KW  - sport
Y1  - 2019
U6  - https://doi.org/10.1080/02640414.2019.1585313
SN  - 0264-0414
SN  - 1466-447X
VL  - 37
IS  - 14
SP  - 1673
EP  - 1680
PB  - Routledge, Taylor & Francis Group
CY  - London
ER  -