TY  - JOUR
AU  - Buchanan, Patricia A.
A2  - Buchanan, Patricia A.
A2  - Vardaxis, Vassilios G.
DB  - BISp
DP  - BISp
KW  - Analyse, biomechanische
KW  - Basketballspiel
KW  - Beinkraft
KW  - Beinmuskulatur
KW  - Biomechanik
KW  - Geschlechtsunterschied
KW  - Jugendlicher
KW  - Kind
KW  - Kniegelenk
KW  - Kraftmessung, isokinetische
KW  - Lebensalter
KW  - M. quadriceps femoris
KW  - Muskulatur, ischiocrurale
KW  - Untersuchung, empirische
KW  - Verletzungsprophylaxe
LA  - eng
TI  - Sex-related and age-related differences in knee strength of basketball players ages 11–17 years
TT  - Geschlechts- und altersbezogene Unterschiede der Kraft im Kniegelenk von Basketballspielern zwischen elf und siebzehn Jahren
PY  - 2003
N2  - Objective: To assess hamstrings and quadriceps strength of basketball players ages 11–13 and 15–17 years. Design and Setting: This cross-sectional study occurred during the 2000 American Youth Basketball Tour National Tournament. We investigated whether sex- or age-related strength differences existed among study participants. Subjects:Forty-one tournament participants (22 girls, 19 boys; 11–13 or 15–17 years old) who reported no history of knee sprain or surgery were recruited. Measurements: We used a Cybex II dynamometer to obtain isokinetic concentric peak torques relative to body mass (Nm/kg) at 60°/s for hamstrings and quadriceps bilaterally. From average peak torques, we determined ipsilateral hamstrings:quadriceps and homologous muscle-group ratios. Results: Correlations between hamstrings and quadriceps strength measures ranged from 0.78 to 0.97. Players 15–17 years old had greater relative hamstrings and quadriceps strength than 11- to 13-year-old athletes. Age and sex interacted significantly for quadriceps strength. The quadriceps strength of 15- to 17-year-old girls did not differ from that of 11- to 13-year-old girls, whereas 15- to 17-year-old boys had stronger quadriceps than 11- to 13-year-old boys. Boys 15–17 years old had greater quadriceps strength than girls 15–17 years old. Conclusions: This study is unique in providing normative data for the hamstrings and quadriceps strength of basketball players 11–13 and 15–17 years old. Age-related strength differences did not occur consistently between the sexes, as girls 11–13 and 15–17 years old had similar relative quadriceps strength. Verf.-Referat
L2  - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC233177/
L2  - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC233177/pdf/attr_38_03_0231.pdf
SP  - S. 231-237
SN  - 1062-6050
JO  - Journal of athletic training
IS  - 3
VL  - 38
M3  - Elektronische Ressource (online)
M3  - Gedruckte Ressource
ID  - PU201012009355
ER  -