european college of sport science

OP-ST05 Sports 5
Discussion: The present findings suggest that, in addition to high aerobic fitness, high age-related aerobic fitness is associated with
enhanced vagal HR control at rest and immediately after exercise. Lower HRV during HI exercise in the high than moderate fitness group
may be related to greater absolute metabolic demand of HI exercise in the subjects with high age-related aerobic fitness.
References
1. Aubert AE et al. (2003). Heart Rate Variability in Athletes. Sports Med 33:889-919
2. De Meersman RE & Stein PK (2007). Vagal Modulation and Aging. Biol Psychol 74:165-173.
3. Jackson AS et al. (1990). Prediction of Functional Aerobic Capacity without Exercise Testing. Med Sci Sports Exe 22:863-870.
4. Shvartz E & Reibold RC (1990). Aerobic Fitness Norms for Males and Females Aged 6 to 75 Years: A Review. Aviat Space Environ Med
61:3-11.
10:15 - 11:45
Oral presentations
OP-ST05 Sports 5
AN ANALYSIS OF THE DIFFERENCE BETWEEN A JUDO SPECIFIC AND A GENERAL TREADMILL TEST
LOPEZ DIAZ DE DURANA, A., GARCÍA GARCÍA, J.M., NACLERIO AYLLÓN, F.
TECHNICAL UNIVERSITY OF MADRID
Introduction: In judo, treadmill running tests are commonly used for the physiological quantification of aerobic fitness in elite athletes. It
should be noted however that the muscle mass used in a typical judo exercise is greater than in treadmill running. Therefore the aim of
this study was to show the difference in the V´O2max and hrmax observed in a treadmill test (Heck, 1985) and a new judo specifc protocol
(López Díaz de Durana, 2009) which is a modification of that of (Sterkowicz, 1995).
Methods: 17 university judokas aged from 20 to 25 years, with a minimum of 3 years of judo practice were tested. All participants signed
an informed consent, conistent with university guidelines concerning the testing of human participants. The teadmill test was an incremental
step test and followed the protocol of (Heck, 1985). The judo test protocol (López Díaz de Durana, 2009) was similar to that of the
treadmill and consited of incremental steps of 2 minute duration with a metronometer controlling the number and frequency of the
throws (ippon seoi nage) for each step. After each step the heart rate and V´O2 were recorded in the 1 minute before the next step began.
Results: The population average for the judo and treadmill V´O2max was 64.2+10 mLkg-1min-1 and 58.23+7 mLkg-1min-1respectively.
Whilst for the hrmax this was 195+9 bpm and 195+9 bpm respectively. However the mean individual differences between the judo and
treadmill V´O2max and hrmax were 5+10 mLkg-1min-1 and -1+10 bpm respectively. This showed that for the V´O2max there exist substantial
difference between the judo and treadmill tests. Such differences were not so apparent for the hrmax.
Discussion: Significant differences exist for the V´O2max obtained in the judo specific test and the treadmill test, with the V´O2max being
greater in the judo test. This was due to that the muscular mass used in the judo specific test being greater than that used in treadmill
test. In the case of the maximum heart rate the two tests predicted similar values. We conclude that for the prediction of V´O2max in
judokas a judo specific test is required so as not to underestimate this value.
References
Heck, H., Mader, A.. (1985). Int J Sports Med, 6, 117-130.
Lopez Diaz de Durana, A. (2009) PhD thesis UCLM.
Sterkowicz, S. (1995). Antropomotoryka [in Polish], 12, 29-44.
EFFECT OF K1 FIGHT ON VERTICAL JUMP, REACTION TIME, AND LACTATE PRODUCTION.
CIMADORO, G., ALBERTI, G., BABAULT, N.
1. FACULTY OF SCIENZE MOTORIE; UNIVERSITY OF MILAN; ITALY, 2. UFR STAPS; UNIVERSITY OF DIJON, FRANCE.
Introduction: K1 is a combat sport with punches, kicks and knee blows. Two parameters may influence athletes’ performance: injuries
(e.g., Zazryn et al., 2003) and fatigue. Some studies were conducted to determine fighters physiological profile such as VO2max (Gosh et
al., 1995; Guidetti et al., 2002). However, the effects of fatigue during official K1 fights remain unknown. Therefore, the aim of this study
was to determine the effects of fatigue induced by an official K1 fight on vertical jump, simple visual reaction time, lactate accumulation
and tactical behaviors.
Methods: Eight male volunteers were recruited during regional Italian K1-style amateur competition. Mean (± SD) age, height, weight and
training experience were 24.3 ± 1.8 yrs, 173.8 ± 5.6 cm, 73.3 ± 9.4 kg, 5.6 ± 2.2 yrs, respectively. Subjects performed three rounds of 90 s
with 60 s rest among rounds. Tests included counter movement jumps, simple visual reaction time (both were measured with an optojump
system, Microgate, Italy) and blood lactate (Lactate PRO). They were performed before warm-up and after fights. Vertical jumps and
simple visual reaction times were determined 8 minutes after the end of the third round due to judge’s decision and prize giving. Blood
lactate was collected 2 minutes after the end of the fight. A complete match-analysis was also made using a camcorder (blow numbers).
Results: Match-analysis showed 86 ± 23 total blows. No difference was found among rounds. However, punches (39 ± 16) and kicks (37
± 16) number during fights was bigger (p