Effect of Iso–Caloric Sago and Soy Supplementations during ۹۰ Minutes Steady–State Cycling on Subsequent ۲۰–km Cycling Time Trial Performance in the Heat

Background: In Asian countries, like Malaysia, India, and Thailand, sago (SA) is frequently used as daily food. The use of local daily food as supplements over expensive drinks is cost–effective for athletes. Hence, SA (carbohydrate) could be recommended as affordable nutrition ingestion. The purpose of this study was to determine the effects of SA, Soy (SO) protein, Sago+Soy (SS) supplementation (combination of carbohydrate and protein), and placebo (PL) during moderate–intensity cycling on subsequent ۲۰–km time trial performance. Materials and Methods: The participants were ۱۲ young male well–trained cyclists from Malaysia. They pedaled at ۶۰% of VO۲max for ۹۰ min followed by a ۲۰–km time trial (TT) in the heat. At ۲۰ min intervals during cycling at ۶۰% VO۲max, participants consumed either SA, SO, SS, or a PL. The SA, SO, and SS feedings provided ۷.۵% SA, ۷.۵% SO, and ۷.۵% SA+۱.۵% SO respectively to drink iso–caloric beverages with an estimated energy level ~۳۰۰ kcal. The average speed and cadence were also recorded during the TT. Results: Time taken for TT for SA, SO, SS, and PL were ۴۲.۸±۱.۸ min, ۴۶.۳±۲.۶ min, ۴۲.۷±۲.۳ min, and ۴۳.۲±۱.۸ min respectively. The TT performance, speed, and cadence of the cyclists did not exhibit any significant differences among the three trials. Conclusion: These data indicated that consumption of sago and soy, and iso–caloric SS (coingestion of sago and soy) during steady–state ride failed to improve the subsequent cycling performance in the heat.

Keywords:

Carbohydrate , Protein , Iso–Caloric , Sago , Soy , Cycling Time Trial , Heat