Effects of ribose supplementation prior to and during intense exercise on anaerobic capacity and metabolic markers.
This study examined whether ribose supplementation before and during intense anaerobic exercise impacts anaerobic capacity and metabolic markers. Twelve moderately trained male cyclists (22.3 +/- 2.2 y; 181 +/- 6 cm, 74.8 +/- 9 kg) participated in the study. Subjects were familiarized and fasted for 8 h after standardizing nutritional intake. In a double blind and crossover manner subjects ingested either a 150 mL placebo or ribose (3 g ribose + 150 microg folate). Subjects rested for 25 min and completed 5 x 30 s anaerobic capacity tests with 3 min passive rest. Six capillary blood samples were taken prior to and after sprints for adenine nucleotide breakdown determination. The experiment was repeated 1 wk later with alternative drink. Data were analyzed by repeated measures ANOVA. No significant interactions were observed for any performance or blood variables. D-ribose supplementation has no impact on anaerobic exercise capacity and metabolic markers after high-intensity cycling exercise.
Kerksick
C
C
Exercise and Sport Nutrition Laboratory, Center for Exercise, Nutrition and Preventive Health Research, Dept of Health, Human Performance and Recreation, Baylor University, Waco, TX 76798-7313, USA.
Rasmussen
C
C
Bowden
R
R
Leutholtz
B
B
Harvey
T
T
Earnest
C
C
Greenwood
M
M
Almada
A
A
Kreider
R
R
D000284:Administration, Oral; D000328:Adult; D000641:Ammonia / Q000097:blood; D015308:Anaerobic Threshold / Q000502:physiology*; D000704:Analysis of Variance; D019540:Area Under Curve; D001642:Bicycling / Q000502:physiology*; D015415:Biomarkers / Q000097:blood; D001786:Blood Glucose / Q000187:drug effects / Q000378:metabolism; D018592:Cross-Over Studies; D019587:Dietary Supplements; D004311:Double-Blind Method; D005080:Exercise Test; D006801:Humans; D019344:Lactic Acid / Q000097:blood* / Q000378:metabolism; D008297:Male; D010084:Oxidation-Reduction; D010101:Oxygen Consumption / Q000187:drug effects / Q000502:physiology; D010807:Physical Endurance / Q000187:drug effects* / Q000502:physiology; D012266:Ribose / Q000008:administration & dosage*; D013997:Time Factors
D015415:Biomarkers; D001786:Blood Glucose; D019344:Lactic Acid; D012266:Ribose; D000641:Ammonia