We examined the sweat characteristics and fluid balance of elite female field hockey players during two heat training camps. Fourteen elite female field hockey players from the Australian national squad participated in two heat training camps held ∼6 months apart, following winter- (Camp 1) and summer-based training (Camp 2). Daily waking body mass (BM) and urine specific gravity (USG) were collected, along with several markers of sweat and fluid balance across two matches per camp. There was a 19% mean reduction in estimated whole-body sweat sodium concentration from Camp 1 (45.8 ± 6.5 mmol/L) to Camp 2 (37.0 ± 5.0 mmol/L; p < .001). Waking urine specific gravity ≥ 1.020 was observed in 31% of samples, with no significant differences in mean urine specific gravity or BM between camps (p > .05), but with substantial interindividual variation. Intramatch sweat rates were high (1.2–1.8 L/hr), with greater BM losses in Camp 1 (p = .030), resulting in fewer players losing ≥2% BM in Camp 2 (0%–8%), as compared with Camp 1 (36%–43%; p = .017). Our field data suggest that elite female field hockey players experience substantial sweat losses during competition in the heat regardless of the season. In agreement with previous findings, we observed substantial interindividual variation in sweat and hydration indices, supporting the use of individualized athlete hydration strategies.

我们检查了优秀女子曲棍球运动员在两个高温训练营中的汗水特征和体液平衡。澳大利亚国家队的 14 名女子曲棍球精英运动员在冬季（训练营 1）和夏季训练（训练营 2）之后参加了两次相隔 6 个月的高温训练营。收集每日清醒体重（BM）和尿比重（USG），以及每个训练营两场比赛中汗液和液体平衡的几个标记。从营地 1 (45.8 ± 6.5 mmol/L) 到营地 2 (37.0 ± 5.0 mmol/L； p  < .001)，估计全身汗液钠浓度平均降低 19% 。31% 的样本中观察到清醒尿比重≥ 1.020，营地之间的平均尿比重或 BM 没有显着差异 ( p  > .05)，但个体间存在显着差异。比赛中出汗率较高（1.2–1.8 L/hr），训练营 1 的 BM 损失较多 ( p  = .030)，导致训练营 2 训练营中损失 ≥2% BM 的球员较少 (0%–8%)。与营地 1 (36%–43%; p  = .017)。我们的现场数据表明，无论什么季节，优秀的女子曲棍球运动员在炎热的比赛中都会经历大量的汗水流失。与之前的研究结果一致，我们观察到出汗和水合指数存在显着的个体差异，支持使用个性化运动员水合策略。