Scott Adam C, Roe Nigel, Coats Andrew J S, Piepoli Massimo F
National Heart & Lung Institute, Imperial College of Science, Technology and Medicine, London, UK.
Int J Cardiol. 2003 Feb;87(2-3):173-7. doi: 10.1016/s0167-5273(02)00211-5.
In professional rugby, different positional roles may require different levels of aerobic fitness. Forward and backline players from a team of elite rugby players were tested to evaluate the differences between the two groups.
28 male players, 15 backs and 13 forwards, underwent maximal treadmill cardiopulmonary exercise testing (CPX), lung spirometry, a 3 km timed run, and body fat measurement.
Peak oxygen uptake was higher in backs than in forwards (peak VO(2) 48.3+/-2.1 vs. 41.2+/-2.7 ml kg(-1) min(-1), P<0.05) with no significant difference in peak respiratory exchange ratio (1.08+/-0.02 vs. 1.07+/-0.02, P=NS), exercise time (1306+/-39.7 vs. 1217+/-25.1 s, P=NS) or time for 3 km run (667.5+/-14.1 vs. 699.0+/-20.7 s, P=NS). However, the forwards were taller and heavier (height 190.2+/-2.2 vs. 179.5+/-1.3 cm, P<0.001, body mass 104+/-2.4 vs. 86.3+/-1.7 kg, P<0.0001) and had a higher fat content (body fat percentage 12.8+/-0.8 vs. 9.7+/-0.6%, P<0.01) and forced expiratory volume in 1 s (FEV1, 4.9+/-0.1 vs. 4.5+/-0.2 l, P<0.05). There was a significant negative correlation between peak VO(2), 3 km run time (r=-0.45, P<0.05) and weight (r=-0.54, P<0.003) for all subjects.
Backline players have a higher peak oxygen uptake per kilogram than forwards, although the cardiopulmonary exercise test duration, degree of anaerobic metabolism and 3 km run time are not significantly different. These results could be due to the two groups' different body structure, being shorter, lighter and having a lower percentage body fat. These differences, which are likely to be a result of selection for specific roles in the game, should be taken into account when evaluating aerobic fitness within a rugby team.
在职业橄榄球运动中，不同的位置角色可能需要不同水平的有氧适能。对一支精英橄榄球队的前锋和后卫球员进行测试，以评估两组之间的差异。
28名男性球员，15名后卫和13名前锋，接受了最大运动平板心肺运动测试（CPX）、肺功能测定、3公里定时跑和身体脂肪测量。
后卫的峰值摄氧量高于前锋（峰值VO₂ 48.3±2.1对41.2±2.7毫升·千克⁻¹·分钟⁻¹，P<0.05），峰值呼吸交换率（1.08±0.02对1.07±0.02，P=无显著差异）、运动时间（1306±39.7对1217±25.1秒，P=无显著差异）或3公里跑时间（667.5±14.1对699.0±20.7秒，P=无显著差异）无显著差异。然而，前锋更高更重（身高190.2±2.2对179.5±1.3厘米，P<0.001，体重104±2.4对86.3±1.7千克，P<0.0001），脂肪含量更高（体脂百分比12.8±0.8对9.7±0.6%，P<0.01），一秒用力呼气量（FEV1，4.9±0.1对4.5±0.2升，P<0.05）。所有受试者的峰值VO₂、3公里跑时间（r=-0.45，P<0.05）和体重（r=-0.54，P<0.003）之间存在显著负相关。
后卫每千克的峰值摄氧量高于前锋，尽管心肺运动测试持续时间、无氧代谢程度和3公里跑时间没有显著差异。这些结果可能是由于两组身体结构不同，后卫更矮、更轻且体脂百分比更低。这些差异可能是比赛中特定角色选择的结果，在评估橄榄球队的有氧适能时应予以考虑。
