Effect of whey protein hydrolysate on performance and recovery of top-class orienteering runners.
Int J Sport Nutr Exerc Metab
; 25(2): 97-109, 2015 Apr.
Article
en En
| MEDLINE
| ID: mdl-25029703
ABSTRACT
This trial aimed to examine the effect of whey protein hydrolysate intake before and after exercise sessions on endurance performance and recovery in elite orienteers during a training camp. Eighteen elite orienteers participated in a randomized controlled intervention trial during a 1-week training camp (13 exercise sessions). Half of the runners (PRO-CHO) ingested a protein drink before (0.3 g kg(-1)) and a protein-carbohydrate drink after (0.3 g protein kg(-1) and 1 g carbohydrate kg(-1)) each exercise session. The others ingested energy and time-matched carbohydrate drinks (CHO). A 4-km run-test with 20 control points was performed before and on the last day of the intervention. Blood and saliva were obtained in the mornings, before and after run-tests, and after the last training session. During the intervention, questionnaires were fulfilled regarding psychological sense of performance capacity and motivation. PRO-CHO and not CHO improved performance in the 4-km run-test (interaction p < .05). An increase in serum creatine kinase was observed during the week, which was greater in CHO than PRO-CHO (interaction p < .01). Lactate dehydrogenase (p < .001) and cortisol (p = .057) increased during the week, but the change did not differ between groups. Reduction in sense of performance capacity during the intervention was greater in CHO (p < .05) than PRO-CHO. In conclusion, ingestion of whey protein hydrolysate before and after each exercise session improves performance and reduces markers of muscle damage during a strenuous 1-week training camp. The results indicate that protein supplementation in conjunction with each exercise session facilitates the recovery from strenuous training in elite orienteers.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Resistencia Física
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Hidrolisados de Proteína
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Carrera
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Músculo Esquelético
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Rendimiento Atlético
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Proteína de Suero de Leche
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Suero Lácteo
Tipo de estudio:
Clinical_trials
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
Idioma:
En
Año:
2015
Tipo del documento:
Article