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Oral salt supplementation and long-distance exercise
  1. C Lehance1,
  2. C Rodriguez de la Cruz1,
  3. L Counet2,
  4. L Seideil3,
  5. T Bury1
  1. 1Department of Motricity Sciences, Liege University, Liege, Belgium
  2. 2Department of Public Health, Liege University, Liege, Belgium
  3. 3Department of Biostatistics, Liege University, Liege, Belgium

Abstract

During long-distance exercise, it can become difficult to continue to provide good nutrition support. The aim was to evaluate the potential of sausage “Saucisport” (water: 71%, proteins: 17%, carbohydrates: 3%, fat: 6%, other: 3%) to maintain metabolic balance and performance during long-distance exercise. 10 male long-distance runners (mean ± SD: age 34±14 y, height 177±6 cm, weight 71±6 kg, VO2max 56±8 ml/min/kg) performed two sessions on treadmill (4 h at 65–70% VO2 max). These two exercises were separated by 10 days. Subjects were randomised to receive “standard” or oral salt supplementation. During rectangular test, different parameters were recorded every hour (T0, T1, T2, T3, T4) and 1 h postexercise (T5): ventilation, respiratory quotient, oxygen consumption, heart rate, insulin, glucose and free fatty acids. Analysis of respiratory and cardiovascular parameters did not show any difference between salt and sugar supplementation, although in general the values observed in sweet supplementation are slightly higher than those in salt supplementation. Evolution of insulin during the stress test was comparable in both types of supplementation. Blood glucose values were higher after 3 h (p = 0.036) and 4 h (p = 0.014) of effort under “standard” supplementation, but were not different at the end of the exercise test. Our study shows that the sausage Saucisport® does not alter the physiological parameters, metabolic balance or performance during long-distance exercise.

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