Performance and drag during drafting swimming in highly trained triathletes

被引:48
作者
Chatard, JC
Chollet, D
Millet, G
机构
[1] Univ St Etienne, Fac Med, GIP Exercice, Physiol Lab, F-42055 St Etienne 2, France
[2] UFR STAPS, Montpellier, France
[3] Univ Montpellier, Pole France Triathlon, Montpellier, France
[4] CREPS Montpellier, Montpellier, France
关键词
blood lactate; exercise; oxygen consumption; rating of perceived exertion;
D O I
10.1097/00005768-199808000-00015
中图分类号
G8 [体育];
学科分类号
04 [教育学]; 0403 [体育学];
摘要
Purpose: The influence of drafting was studied on the swimming performance, metabolic response, and passive drag of eight triathletes. Methods: The performance in drafting position was measured directly behind another swimmer during a 400-m swim and compared with the nondrafting. position. Metabolic response concerned (V) over dot O-2, blood lactate. stroke rate, stroke length, and rating of perceived exertion. Drag was measured by passive towing. Results: In drafting position, the triathletes swam on average faster (3.2%) over the 400-m swim than in nondrafting position (4 min, 47.69 +/- 10.35 s vs 4 min, 57.25 +/- 7.24 s; P < 0.01). Blood lactate and stroke rate were significantly lower (9.6 mM vs 10.8 mM; 39.9 cycle . min(-1) vs 41.3 cycle . min(-1), P < 0.02) and stroke length higher (2.10 m . cycle(-1) vs 1.97 m . cycle(-1), P < 0.01) than in nondrafting position. (V) over dot O-2 and rating of perceived exertion were nor statistically different. Passive drag was lower in drafting than in nondrafting position (P < 0.01). However, the gain in drag decreased with the towed velocity (from 26% at 1.1 m . s(-1) to 13% at 1.7 m.s(-1)). In drafting position, the performance gain was related to the 400-m time (r = 0.80, P < 0.01) and to the skinfold thickness (r = 0.94, P < 0.01), with faster and leaner swimmers having greater gains of performance. Conclusions: Swimming behind another swimmer in a race is advantageous for triathletes.
引用
收藏
页码:1276 / 1280
页数:5
相关论文
共 24 条
[1]
BASSETT DR, 1991, MED SCI SPORT EXER, V23, P744
[2]
BILODEAU B, 1994, MED SCI SPORT EXER, V26, P637
[3]
EFFECT OF DRAFTING ON WORK INTENSITY IN CLASSICAL CROSS-COUNTRY SKIING [J].
BILODEAU, B ;
ROY, B ;
BOULAY, MR .
INTERNATIONAL JOURNAL OF SPORTS MEDICINE, 1995, 16 (03) :190-195
[4]
BORG GAV, 1973, MED SCI SPORT EXER, V5, P90
[5]
CHATARD JC, 1995, MED SCI SPORT EXER, V27, P580
[6]
PASSIVE DRAG IS STILL A GOOD EVALUATOR OF SWIMMING APTITUDE [J].
CHATARD, JC ;
BOURGOIN, B ;
LACOUR, JR .
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY, 1990, 59 (06) :399-404
[7]
THE CONTRIBUTION OF PASSIVE DRAG AS A DETERMINANT OF SWIMMING PERFORMANCE [J].
CHATARD, JC ;
LAVOIE, JM ;
BOURGOIN, B ;
LACOUR, JR .
INTERNATIONAL JOURNAL OF SPORTS MEDICINE, 1990, 11 (05) :367-372
[8]
ENERGY-EXPENDITURE DURING FRONT CRAWL SWIMMING - PREDICTING SUCCESS IN MIDDLE-DISTANCE EVENTS [J].
COSTILL, DL ;
KOVALESKI, J ;
PORTER, D ;
KIRWAN, J ;
FIELDING, R ;
KING, D .
INTERNATIONAL JOURNAL OF SPORTS MEDICINE, 1985, 6 (05) :266-270
[9]
THE ENERGY-COST OF HUMAN LOCOMOTION ON LAND AND IN WATER [J].
DIPRAMPERO, PE .
INTERNATIONAL JOURNAL OF SPORTS MEDICINE, 1986, 7 (02) :55-72
[10]
ASSESSMENT OF AMOUNT OF FAT IN HUMAN BODY FROM MEASUREMENTS OF SKINFOLD THICKNESS [J].
DURNIN, JVG ;
RAHAMAN, MM .
BRITISH JOURNAL OF NUTRITION, 1967, 21 (03) :681-+