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FIGURE 4-2 (A) Net water flux (mean ± SE) across a 40 cm segment of the duodenojejunum during the perfusion (15 ml per min) of water or a 6 percent carbohydrate-electrolyte (CE) solution at rest, during 90 min of exercise at 70 percent , and during 60 min of recovery. Infusion began at time 0. Negative values indicate absorption. (B) Percent change in plasma volume during rest, exercise, and recovery for perfusion of water and the 6 percent GE solution. Different from rest and recovery values (p < 0.05). SOURCE: Gisolfi et al. (1991).

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