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Fig. 4 | Journal of the International Society of Sports Nutrition

Fig. 4

From: Fluid type influences acute hydration and muscle performance recovery in human subjects

Fig. 4

Rate of salivary osmolality recovery during fluid hydration following dehydrating exercise protocol. Salivary osmolality was fit with a single exponential decay (one-phase decay) starting with peak salivary osmolality against real time. a representative one-phase decay fit to salivary osmolality recovery during fluid hydration. Fluid was ingested in two phases indicated by the arrows. b-d Bar graph representation of one-phase decay fit parameters (K, tau (τ), and τ 1/2) in Females and Males from the Deep, Sports and Spring groups. A repeated-measures two-way ANOVA determined a significant impact of fluid on rate parameters of hydration that was not impacted by sex. Post-hoc Bonferroni analysis indicated a significant difference in the Deep group compared to both Sports and Spring groups (*p < 0.0001 compared to Sports and Spring groups). One-phase decay equation: Sosm = (Sosm(peak)- Sosm(baseline))Kt + Sosm(baseline); K = rate constant, tau (τ) =1/K, and τ 1/2 = half-time Sosm recovery. Data presented as mean ± S.D

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