Cardoso Ricardo, Rios Manoel, Cardoso Filipa, Bouicher Segan, Abraldes J Arturo, Gomes Beatriz B, Vilas-Boas João Paulo, Fernandes Ricardo J
Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal.
Porto Biomechanics Laboratory, Faculty of Sport, University of Porto, Porto, Portugal.
Int J Sports Physiol Perform. 2025 Mar 11;20(5):678-683. doi: 10.1123/ijspp.2024-0515. Print 2025 May 1.
We evaluated the technical and energetical impact of using Randall foils versus simple Big blades during a maximum rowing effort in field conditions.
Fourteen experienced rowers (12 male and 2 female) 26 (9) versus 25 (9) years of age, 179.8 (4.3) versus 175.0 (2.8) cm in height, and 74.2 (4.8) versus 65.5 (6.2) kg of body mass (for males and females, respectively) performed 2 maximal 500-m on-water bouts (1 each using Randall foils and simple Big blades in a randomized order). Performance and physiological variables were continuously measured along the efforts, with the latter being also recorded during the baseline and recovery periods.
Rowing time was shorter using Randall foils when compared with simple Big blades (107.59 [5.53] vs 108.96 [5.44] s), while cycle rate (39.73 [2.56] vs 39.71 [2.24] cycle·min-1), peak oxygen uptake (63.47 [9.96] vs 62.68 [9.65] mL·kg-1·min-1), mean oxygen uptake (4.15 [0.77] vs 4.12 [0.78] L·min-1), respiratory frequency (62.44 [9.22] vs 62.17 [11.22] beats·min-1), peak heart rate (178 [11] vs 180 [9] beats·min-1], peak blood lactate concentration (14.26 [3.52] vs 13.76 [4.02] mmol · L-1), and rating of perceived effort (17 [1.43] vs 17 [1]) were similar in both experimental conditions. Furthermore, it was observed that the aerobic pathway represented ∼50% of the total energy spent in the 500-m sprint independently of the blades used.
Data suggest that the use of Randall foils enhances rowing performance without compromising rowers' mechanical and metabolic functions.
我们评估了在野外条件下进行最大划船强度时，使用兰德尔桨叶与简单大桨叶相比在技术和能量方面的影响。
14名经验丰富的划船运动员（12名男性和2名女性），年龄分别为26（9）岁和25（9）岁，身高分别为179.8（4.3）厘米和175.0（2.8）厘米，体重分别为74.2（4.8）千克和65.5（6.2）千克（分别针对男性和女性），进行了2次500米水上全力划行测试（每次分别随机使用兰德尔桨叶和简单大桨叶）。在划行过程中持续测量性能和生理变量，同时在基线期和恢复期也记录这些变量。
与简单大桨叶相比，使用兰德尔桨叶时划船时间更短（107.59 [5.53] 秒对108.96 [5.44] 秒），而蹬腿频率（39.73 [2.56] 次·分钟-1对39.71 [2.24] 次·分钟-1）、峰值摄氧量（63.47 [9.96] 毫升·千克-1·分钟-1对62.68 [9.65] 毫升·千克-1·分钟-1）、平均摄氧量（4.15 [0.77] 升·分钟-1对4.12 [0.78] 升·分钟-1）、呼吸频率（62.44 [9.22] 次·分钟-1对62.17 [11.22] 次·分钟-1）、峰值心率（178 [11] 次·分钟-1对180 [9] 次·分钟-1）、峰值血乳酸浓度（14.26 [3.52] 毫摩尔·升-1对13.76 [4.02] 毫摩尔·升-1）以及主观用力程度评分（17 [1.43] 对17 [1]）在两种实验条件下相似。此外，观察到无论使用何种桨叶，有氧代谢途径在500米冲刺中消耗的总能量中约占50%。
数据表明，使用兰德尔桨叶可提高划船成绩，且不会损害划船运动员的机械和代谢功能。
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