TY  - JOUR
AU  - Tourny-Chollet, C.
A2  - Tourny-Chollet, C.
A2  - Chollet, D.
A2  - Hogie, S.
A2  - Papparodopoulos, C.
DB  - BISp
DP  - BISp
KW  - Beobachtungsmethode
KW  - Frankreich
KW  - Hochleistungssport
KW  - Kinematik
KW  - Kontaktzeit
KW  - Leistungssport
KW  - Schmetterlingsschwimmen
KW  - Schwimmsport
KW  - Sportwissenschaft
KW  - Trainingswissenschaft
KW  - Untersuchung, vergleichende
KW  - Varianzanalyse
KW  - Videotechnik
KW  - Wendetechnik
LA  - eng
TI  - Kinematic analysis of butterfly turns of international and national swimmers
TT  - Kinematische Analyse der Wenden beim Schmetterlingsschwimmen internationaler und nationaler Schwimmsportler
PY  - 2002
N2  - The aims of this study were (1) to evaluate the different turn phases of 200 m butterfly during competition in a 50 m pool, (2) to determine if wall contact times are related to swim speed and (3) to compare the turn variables of a European Champion with other swimmers. In the first part of the study, we assessed the turns of 22 swimmers ranked in three groups according to 200 m butterfly swim performance (fast group = 121.73 +/- 3.03 s, intermediate group = 126.25 +/- 0.55 s, slow group = 129.24 +/- 2.30 s). Two turn times were recorded: the first before the turn (i.e. the time it takes the swimmer's head to reach the wall from 7.5 m away) and the second after the turn (i.e. the time from the wall to the point at which the swimmer's head passes 7.5 m away). The third turn was performed significantly faster by the fast group than by the slow group, both before (P<0.01) and after (P<0.02) the turn. In the second part of the study, objectives (2) and (3) were evaluated among 15 swimmers based on a specific protocol. Three cameras (50 Hz) simultaneously recorded the turn; these were placed above the water 10 m before the wall, 5 m before and just above the wall. Longer contact times of the feet on the wall were associated with a faster push-off speed (P<0.02). The European Champion achieved an improved contact time while performing a rapid pull-out speed. Verf.-Referat
SP  - S. 383-390
SN  - 0264-0414
JO  - Journal of sports sciences
IS  - 5
VL  - 20
M3  - Gedruckte Ressource
ID  - PU200911005896
ER  -