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Similar performance after intake of carbohydrate plus whey protein and carbohydrate only in the early phase after non‐exhaustive cycling.
- Source :
-
Scandinavian Journal of Medicine & Science in Sports . Jul2023, Vol. 33 Issue 7, p1091-1103. 13p. 1 Diagram, 5 Graphs. - Publication Year :
- 2023
-
Abstract
- Aim: The aim of the present study was to compare performance 5 h after a 90‐min endurance training session when either carbohydrate only or carbohydrate with added whey hydrolysate or whey isolate was ingested during the first 2 h of the recovery period. Methods: Thirteen highly trained competitive male cyclists completed three exercise and diet interventions (double‐blinded, randomized, crossover design) separated by 1 week. The 90‐min morning session (EX1) included a 60 min time‐trial (TT60). Immediately and 1 h after exercise, participants ingested either (1) 1.2 g carbohydrate∙kg−1∙h−1 (CHO), (2) 0.8 g carbohydrate∙kg−1∙h−1 + 0.4 g isolate whey protein∙kg−1∙h−1 (ISO) or (3) 0.8 g carbohydrate∙kg−1∙h−1 + 0.4 g hydrolysate whey protein∙kg−1∙h−1 (HYD). Additional intakes were identical between interventions. After 5 h of recovery, participants completed a time‐trial performance (TTP) during which a specific amount of work was performed. Blood and urine were collected throughout the day. Results: TTP did not differ significantly between dietary interventions (CHO: 43:54 ± 1:36, ISO: 46:55 ± 2:32, HYD: 44:31 ± 2:01 min). Nitrogen balance during CHO was lower than ISO (p < 0.0001) and HYD (p < 0.0001), with no difference between ISO and HYD (p = 0.317). In recovery, the area under the curve for blood glucose was higher in CHO compared to ISO and HYD. HR, VO2, RER, glucose, and lactate during EX2 were similar between interventions. Conclusion: Performance did not differ after 5 h of recovery whether carbohydrate only or isocaloric carbohydrate plus protein was ingested during the first 2 h. Correspondingly, participants were not in negative nitrogen balance in any dietary intervention. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BLOOD sugar analysis
*STATISTICS
*ERGOGENIC aids
*ENDURANCE sports training
*ANALYSIS of variance
*OXYGEN consumption
*ONE-way analysis of variance
*PHYSICAL training & conditioning
*CYCLING
*DIETARY supplements
*COOLDOWN
*RANDOMIZED controlled trials
*NITROGEN
*INSULIN
*BLIND experiment
*LACTATES
*ENZYME-linked immunosorbent assay
*REPEATED measures design
*DESCRIPTIVE statistics
*RESEARCH funding
*ATHLETIC ability
*DIETARY carbohydrates
*WHEY proteins
*STATISTICAL sampling
*CROSSOVER trials
*DATA analysis software
*DATA analysis
*VENOUS puncture
URINE collection & preservation
Subjects
Details
- Language :
- English
- ISSN :
- 09057188
- Volume :
- 33
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Scandinavian Journal of Medicine & Science in Sports
- Publication Type :
- Academic Journal
- Accession number :
- 164255011
- Full Text :
- https://doi.org/10.1111/sms.14364