dellagatta-doesthenutritional-2020.pdf (1.27 MB)
Does the Nutritional Composition of Dairy Milk Based Recovery Beverages Influence Post-exercise Gastrointestinal and Immune Status, and Subsequent Markers of Recovery Optimisation in Response to High Intensity Interval Exercise?
journal contribution
posted on 2021-01-14, 00:00 authored by I Russo, Paul Della GattaPaul Della Gatta, Andrew GarnhamAndrew Garnham, Judi PorterJudi Porter, L M Burke, R J S CostaThis study aimed to determine the effects of flavored dairy milk based recovery beverages of different nutrition compositions on markers of gastrointestinal and immune status, and subsequent recovery optimisation markers. After completing 2 h high intensity interval running, participants (n = 9) consumed a whole food dairy milk recovery beverage (CM, 1.2 g/kg body mass (BM) carbohydrate and 0.4 g/kg BM protein) or a dairy milk based supplement beverage (MBSB, 2.2 g/kg BM carbohydrate and 0.8 g/kg BM protein) in a randomized crossover design. Venous blood samples, body mass, body water, and breath samples were collected, and gastrointestinal symptoms (GIS) were measured, pre- and post-exercise, and during recovery. Muscle biopsies were performed at 0 and 2 h of recovery. The following morning, participants returned to the laboratory to assess performance outcomes. In the recovery period, carbohydrate malabsorption (breath H2 peak: 49 vs. 24 ppm) occurred on MBSB compared to CM, with a trend toward greater gut discomfort. No difference in gastrointestinal integrity (i.e., I-FABP and sCD14) or immune response (i.e., circulating leukocyte trafficking, bacterially-stimulated neutrophil degranulation, and systemic inflammatory profile) markers were observed between CM and MBSB. Neither trial achieved a positive rate of muscle glycogen resynthesis [−25.8 (35.5) mmol/kg dw/h]. Both trials increased phosphorylation of intramuscular signaling proteins. Greater fluid retention (total body water: 86.9 vs. 81.9%) occurred on MBSB compared to CM. Performance outcomes did not differ between trials. The greater nutrient composition of MBSB induced greater gastrointestinal functional disturbance, did not prevent the post-exercise reduction in neutrophil function, and did not support greater overall acute recovery.
History
Journal
Frontiers in NutritionVolume
7Article number
622270Pagination
1 - 17Publisher
Frontiers MediaLocation
Lausanne, SwitzerlandPublisher DOI
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ISSN
2296-861XeISSN
2296-861XLanguage
EnglishPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2021, Russo, Della Gatta, Garnham, Porter, Burke and CostaUsage metrics
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No categories selectedKeywords
Science & TechnologyLife Sciences & BiomedicineNutrition & Dieteticsmolecular nutritionintestinal epitheliumneutrophilinflammationglycogenprotein synthesishydrationEXERTIONAL-HEAT STRESSMUSCLE PROTEIN-SYNTHESISREPETITIVE GUT-CHALLENGECIRCULATORY ENDOTOXINRESISTANCE EXERCISESYSTEMIC ENDOTOXINPROLONGED EXERCISEULTRA-MARATHONHEALTHY-YOUNGFLUID BALANCE
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