English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background  Whilst exogenous carbohydrate oxidation (CHO EXO ) is influenced by mono- and disaccharide combinations, debate exists whether such beverages enhance fluid delivery and exercise performance. Therefore, this study aimed to ascertain CHO EXO , fluid delivery and performance times of a commercially available maltodextrin/ fructose beverage in comparison to an isocaloric maltodextrin beverage and placebo.    Methods  Fourteen club level cyclists (age: 31.79 ± 10.02 years; height: 1.79 ± 0.06 m; weight: 73.69 ± 9.24 kg; VO 2max : 60.38 ± 9.36 mL · kg ·-1  min -1 ) performed three trials involving 2.5 hours continuous exercise at 50% maximum power output (W max : 176.71 ± 25.92 W) followed by a 60 km cycling performance test. Throughout each trial, athletes were randomly assigned, in a double-blind manner, either: (1) 1.1 g · min -1  maltodextrin + 0.6 g · min -1  fructose (MD + F), (2) 1.7 g · min -1  of maltodextrin (MD) or (3) flavoured water (P). In addition, the test beverage at 60 minutes contained 5.0 g of deuterium oxide ( 2 H 2 O) to assess quantification of fluid delivery. Expired air samples were analysed for CHO EXO  according to the  13 C/ 12 C ratio method using gas chromatography continuous flow isotope ratio mass spectrometry.    Results  Peak CHO EXO  was significantly greater in the final 30 minutes of submaximal exercise with MD + F and MD compared to P (1.45 ± 0.09 g · min -1 , 1.07 ± 0.03 g · min -1 and 0.00 ± 0.01 g · min -1  respectively,  P  < 0.0001), and significantly greater for MD + F compared to MD (P = 0.005). The overall appearance of  2 H 2 O in plasma was significantly greater in both P and MD + F compared to MD (100.27 ± 3.57 ppm, 92.57 ± 2.94 ppm and 78.18 ± 4.07 ppm respectively,  P  < 0.003). There was no significant difference in fluid delivery between P and MD + F ( P  = 0.078). Performance times significantly improved with MD + F compared with both MD (by 7 min 22 s ± 1 min 56 s, or 7.2%) and P (by 6 min 35 s ± 2 min 33 s, or 6.5%,  P  < 0.05) over 60 km.    Conclusions  A commercially available maltodextrin-fructose beverage improves CHO EXO  and fluid delivery, which may benefit individuals during sustained moderate intensity exercise. The greater CHO EXO  observed when consuming a maltodextrin-fructose beverage may support improved performance times.

Assessing a commercially available sports drink on exogenous carbohydrate oxidation, fluid delivery and sustained exercise performance