Analysis of performance of prepubertal swimmers assessed from anthropometric and bio-energetic characteristics.
The relationship between anthropometric and bio-energetic data and timed performance over 50 to 400 m was studied in 25 young male swimmers [11.3 (SD 1) years]. Anthropometric measurements included height, body mass, body fat mass, body area, thoracic section area (Ats) thoracic circumferences, lengths of upper limb, bi-acromial and bi-iliac diameters. Maximal oxygen consumption (VO2max; direct method), maximal anaerobic power (W(an),max; force-velocity test) and mean power in 30 s sprint (W30 s; Wingate test) were also measured. Each of these bio-energetic variables was expressed in absolute terms, relating to body mass, body area and Ats. The stepwise regression method was used to determine contribution of the variables (anthropometric and/or bio-energetic) of the time achieved over the distance. The W30 s/Ats accounted for 46% of the time over 50 m (negative correlation). The VO2max/Ats and height were negatively correlated with the times of performances over 100 m, 200 m and 400 m, these two variables accounted for 71% to 77% of the performance. These results would indicate that even in young boys, anthropometric and bio-energetic characteristics are both important in swimming performance, particularly the bio-energetic variables expressed per Ats.
Duché
P
P
Laboratoire de Physiologie de la Performance, UFR STAPS, Aubière, France.
Falgairette
G
G
Bedu
M
M
Lac
G
G
Robert
A
A
Coudert
J
J
D001823:Body Composition / Q000502:physiology; D001827:Body Height / Q000502:physiology; D001830:Body Surface Area; D001835:Body Weight / Q000502:physiology; D002648:Child; D004734:Energy Metabolism / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D012044:Regression Analysis; D012741:Sexual Maturation / Q000502:physiology*; D013550:Swimming; D013909:Thorax / Q000033:anatomy & histology