Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport, University of Porto, Porto, Portugal.
Porto Biomechanics Laboratory (LABIOMEP-UP), University of Porto, Porto, Portugal.
Sci Rep. 2021 Feb 25;11(1):4566. doi: 10.1038/s41598-021-83900-y.
Surfing is one additional sport proposed by the Tokyo 2020 Organizing Committee. Surprisingly, substantial efforts to understand surfing energetics are recent, and the impact of a single surfing paddling cycle on fatigue and energy cost is still not clear. Since surfing paddling technique is highly specific, experiments in real practice conditions are necessary to provide deeper insights. Through a biophysical approach, biomechanical and energetics responses of surfing paddling were quantified and compared from 16 competitive male surfers (23.5 ± 10.0 years old, 65.3 ± 11.4 kg and 1.72 ± 0.01 m) during two sets (PRE and POST) of 10 s all-out tethered paddling plus 20 m sprint paddling, interposed by 6 min of endurance paddling. Faster surfers presented lower energy cost during sprint PRE (r = 0.30, p = 0.03) and endurance (r = 0.35, p = 0.02) relative surfing paddling velocities. Although the energy cost was higher for a lower velocity at maximal paddling velocity POST, the energy cost of surfing paddling increased with absolute velocity according to a power function (R = 0.83). Our results suggest that fatigue seems to occur even following a single surfing paddling cycle. Developing a powerful and endurable metabolic base while reducing energy cost during surfing paddling should be seen as key factors in surfing training programs.
冲浪是东京 2020 组委会提出的另一项运动。令人惊讶的是，近期才开始进行大量研究来了解冲浪的能量学，单次冲浪划水对疲劳和能量消耗的影响仍不清楚。由于冲浪划水技术非常特殊，因此需要在实际实践条件下进行实验，以提供更深入的见解。通过生物物理方法，对 16 名有竞争力的男性冲浪者（23.5±10.0 岁，65.3±11.4kg 和 1.72±0.01m）在两次 10 秒全力系绳划水（PRE 和 POST）之间的冲浪划水的生物力学和能量学响应进行了量化和比较，每组都包含 20 米冲刺划水和 6 分钟的耐力划水。速度更快的冲浪者在冲刺 PRE（r=0.30，p=0.03）和耐力（r=0.35，p=0.02）期间的相对冲浪划水速度下，能量消耗较低。尽管在 POST 最大划水速度下，较低速度的能量消耗较高，但冲浪划水的能量消耗根据幂函数（R=0.83）随绝对速度增加而增加。我们的研究结果表明，即使是单次冲浪划水后也似乎会发生疲劳。在冲浪划水过程中，发展强大且持久的代谢基础，同时降低能量消耗，应被视为冲浪训练计划的关键因素。
