PURPOSE: The aim of the present study was to compare the effects of trehalose (TRE) and maltose (MAL) ingestion on exogenous carbohydrate oxidation rates and blood metabolite responses during prolonged moderate-intensity cycling exercise. METHODS: Nine trained subjects performed three randomly assigned bouts of exercise separated by at least 1 wk. Each trial consisted of 150 min of cycling at 55% of maximal power output (Wmax) while ingesting a solution providing either 1.1 g x min(-1) TRE, 1.1 g x min(-1) MAL, or water (WAT). RESULTS:Total carbohydrate oxidation rates were significantly higher (P < 0.05) in both the MAL (2.09 +/- 0.18 g x min(-1)) and TRE (1.92 +/- 0.32 g x min(-1)) trials compared with the WAT trial (1.62 +/- 0.28 g x min(-1)). Peak exogenous carbohydrate oxidation was significantly higher in the MAL trial compared with the TRE trial (1.01 +/- 0.24 and 0.73 +/- 0.22 g x min(-1), respectively, P < 0.05). The MAL trial resulted in significantly reduced endogenous carbohydrate oxidation rates compared with the WAT trial (1.20 +/- 0.25 and 1.62 +/- 0.28 g x min(-1), respectively, P < 0.05). When compared with the WAT trial, total fat oxidation for the same period was significantly reduced in both carbohydrate trials (0.91 +/- 0.19, 0.68 +/- 0.19, and 0.79 +/- 0.19 g x min(-1) for WAT, MAL, and TRE, respectively, P < 0.05) and tended to be lower in MAL compared with TRE (P < 0.06). DISCUSSION: Both solutions maintained high plasma glucose concentrations. MAL had a "sparing" effect on endogenous carbohydrate stores. The reduced exogenous carbohydrate oxidation rate of TRE compared to MAL is probably due to a reduced enzymatic hydrolysis rate within the small intestine, causing a slower availability.
RCT Entities:
PURPOSE: The aim of the present study was to compare the effects of trehalose (TRE) and maltose (MAL) ingestion on exogenous carbohydrate oxidation rates and blood metabolite responses during prolonged moderate-intensity cycling exercise. METHODS: Nine trained subjects performed three randomly assigned bouts of exercise separated by at least 1 wk. Each trial consisted of 150 min of cycling at 55% of maximal power output (Wmax) while ingesting a solution providing either 1.1 g x min(-1) TRE, 1.1 g x min(-1) MAL, or water (WAT). RESULTS: Total carbohydrate oxidation rates were significantly higher (P < 0.05) in both the MAL (2.09 +/- 0.18 g x min(-1)) and TRE (1.92 +/- 0.32 g x min(-1)) trials compared with the WAT trial (1.62 +/- 0.28 g x min(-1)). Peak exogenous carbohydrate oxidation was significantly higher in the MAL trial compared with the TRE trial (1.01 +/- 0.24 and 0.73 +/- 0.22 g x min(-1), respectively, P < 0.05). The MAL trial resulted in significantly reduced endogenous carbohydrate oxidation rates compared with the WAT trial (1.20 +/- 0.25 and 1.62 +/- 0.28 g x min(-1), respectively, P < 0.05). When compared with the WAT trial, total fat oxidation for the same period was significantly reduced in both carbohydrate trials (0.91 +/- 0.19, 0.68 +/- 0.19, and 0.79 +/- 0.19 g x min(-1) for WAT, MAL, and TRE, respectively, P < 0.05) and tended to be lower in MAL compared with TRE (P < 0.06). DISCUSSION: Both solutions maintained high plasma glucose concentrations. MAL had a "sparing" effect on endogenous carbohydrate stores. The reduced exogenous carbohydrate oxidation rate of TRE compared to MAL is probably due to a reduced enzymatic hydrolysis rate within the small intestine, causing a slower availability.
Authors: E E Blaak; J-M Antoine; D Benton; I Björck; L Bozzetto; F Brouns; M Diamant; L Dye; T Hulshof; J J Holst; D J Lamport; M Laville; C L Lawton; A Meheust; A Nilson; S Normand; A A Rivellese; S Theis; S S Torekov; S Vinoy Journal: Obes Rev Date: 2012-07-11 Impact factor: 9.213
Authors: Chad M Kerksick; Colin D Wilborn; Michael D Roberts; Abbie Smith-Ryan; Susan M Kleiner; Ralf Jäger; Rick Collins; Mathew Cooke; Jaci N Davis; Elfego Galvan; Mike Greenwood; Lonnie M Lowery; Robert Wildman; Jose Antonio; Richard B Kreider Journal: J Int Soc Sports Nutr Date: 2018-08-01 Impact factor: 5.150