Cumulative urine output and urine osmolality responses to beverage ingestion
Urine mass did not differ between trials immediately after the beverage ingestion period for Young and Older. However, 1 h after the ingestion of water, the cumulative urine output for Young was significantly higher than Older. This was sustained at 2 h post drinking (p < 0.05). Urine osmolality was significantly lower in Young compared to Older at 1 h after ingestion of water; and significantly higher in Young than Older at 2 h after the ingestion of sport drink and milk, and at 3 h for water, fruit juice and sport drink (Table 