O'Neill Byron, Leon Eric, Furness James, Schram Ben, Kempsmith Kevin
Faculty of Health Sciences and Medicine, Bond University, Robina, QLD, AUSTRALIA.
Water Based Research Unit, Bond University, Robina, QLD, AUSTRALIA.
Int J Exerc Sci. 2022 Jan 1;14(6):1388-1399. doi: 10.70252/FULX2523. eCollection 2021.
Surfing is a popular sport globally which is performed in varied environmental conditions. With limited research in the field exploring hydration, monitoring the effect of surfing on subject hydration is warranted. The purpose of this study was to determine the relationship between surfing intensity and hydration status. A total of ten recreational male surfers were recruited for this study where hydration status was assessed pre-and post-surf session by measures of body mass (BM) and urine specific gravity (USG). Intensity of the surf session was quantified by Global Positioning Systems and Heart Rate monitoring. Subjects surfed for two hours and covered an average distance of 4974.18 ± 542.62 m, with an average speed of 2.48 ± 0.27 km/h and peak speed of 31.86 ± 3.51 km/h. A statistically significant decrease in absolute and relative BM was observed (0.70 ± 0.4 kg, < 0.05 & 0.86 ± 0.54%, < 0.001, respectively). No statistically significant correlation was found between variables (total distance paddled and relative BM, = 0.432, = 0.245; average HR and relative BM change, = -.246, = 0.595). Total distance paddled combined with average HR significantly predicted relative body mass change ((2,3) = 29.362, = 0.011, adjusted = 95.1%). The results demonstrate that a 2-hour recreational surfing session, in temperate environmental conditions, without neoprene garments resulted in minimal BM changes and no changes in USG. Surfers who paddle a greater distance at a higher average HR sustained greater BM changes.
冲浪是一项在全球范围内广受欢迎的运动，可在各种环境条件下进行。鉴于该领域对水合作用的研究有限，因此有必要监测冲浪对受试者水合作用的影响。本研究的目的是确定冲浪强度与水合状态之间的关系。本研究共招募了10名男性休闲冲浪者，通过测量体重（BM）和尿比重（USG）在冲浪前后评估其水合状态。冲浪活动的强度通过全球定位系统和心率监测进行量化。受试者冲浪两小时，平均行进距离为4974.18±542.62米，平均速度为2.48±0.27千米/小时，峰值速度为31.86±3.51千米/小时。观察到绝对体重和相对体重有统计学意义的下降（分别为0.70±0.4千克，P<0.05和0.86±0.54%，P<0.001）。未发现变量之间存在统计学意义的相关性（划水总距离与相对体重，r = 0.432，P = 0.245；平均心率与相对体重变化，r = -0.246，P = 0.595）。划水总距离与平均心率相结合可显著预测相对体重变化（F(2,3) = 29.362，P = 0.011，调整后的R² = 95.1%）。结果表明，在温带环境条件下，不穿氯丁橡胶潜水服进行2小时的休闲冲浪活动，体重变化最小，尿比重无变化。以较高平均心率划水距离更远的冲浪者体重变化更大。
