Similar performance after intake of carbohydrate plus whey protein and carbohydrate only in the early phase after non‐exhaustive cycling

Author:

Sollie Ove1,Clauss Matthieu1ORCID,Jeppesen Per B.2,Tangen Daniel S.1,Johansen Egil I.1,Skålhegg Bjørn S.3,Ivy John L.4,Jensen Jørgen1ORCID

Affiliation:

1. Department of Physical Performance Norwegian School of Sports Sciences Oslo Norway

2. Department of Clinical Medicine Aarhus University Aarhus Denmark

3. Section for Molecular Nutrition, Department of Nutrition University of Oslo Oslo Norway

4. Department of Kinesiology and Health Education University of Texas at Austin Austin Texas USA

Abstract

AimThe 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.MethodsThirteen 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.ResultsTTP 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.ConclusionPerformance 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.

Publisher

Wiley

Subject

Physical Therapy, Sports Therapy and Rehabilitation,Orthopedics and Sports Medicine

Reference48 articles.

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4. Intake of Protein Plus Carbohydrate during the First Two Hours after Exhaustive Cycling Improves Performance the following Day

5. Protein intake in the early recovery period after exhaustive exercise improves performance the following day;Sollie O;J Appl Physiol,1985

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