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Carbohydrate+Protein Ingestion Influences Recovery Following a Marathon Run
Author(s) -
Saunders Michael J,
DeWitt Cash R,
Gross Melinda C,
Rios Amanda Dillon,
Greever Cory J,
Murach Kevin A,
Wineland Seth Y,
Baur Daniel A,
Luden Nicholas D
Publication year - 2016
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.30.1_supplement.898.4
Subject(s) - ingestion , medicine , carbohydrate , sitting , zoology , endocrinology , biology , pathology
The present study examined the effects of carbohydrate+protein (CP) ingestion, and the timing of intake (during exercise or immediately post‐exercise), on recovery following a marathon run (42.2 km). Ratings of physical/mental energy and fatigue, muscle soreness, and plasma CK levels were assessed prior to a marathon, and 24‐hr and 72‐hr following the run. In an initial study, changes in these variables were compared between subjects receiving CP intake throughout the marathon (CP During , n = 8) versus those receiving carbohydrate alone (CHO During , n = 8). In a second study, all subjects consumed CHO during a marathon run, with one group consuming CP immediately following exercise (CP Post , N = 4), while a comparison group consumed CHO (CHO Post , N = 4). Changes in dependent measures between time‐points are reported (i.e. 72 hr value – pre‐exercise value, mean±SD), along with magnitude‐based inferences for the differences in these change‐scores between treatments. No meaningful treatment differences were observed for any of the recovery variables at 24‐hr ( unclear ). However, recovery at 72‐hr was improved with CP During versus CHO During for Physical Energy (5 ± 21 vs −25 ± 23 mm, likely ), Mental Fatigue (−18 ± 20 vs 0 ± 4 mm, likely ), and Soreness Descending stairs (15 ± 9 vs 21 ± 17 mm, likely ). Similarly, recovery at 72‐hr was improved with CP Post versus CHO Post for Physical Fatigue (−52 ± 88 vs. 100 ± 88 mm, very likely ), Mental Energy (36 ± 27 vs −62 ± 79 mm, very likely ), Soreness Sitting (1 ± 2 vs 27 ± 26 mm, very likely ) and Soreness Ascending stairs (5 ± 12 vs 37 ± 19 mm, likely ). Thus, protein supplementation had no clear effects on post‐marathon recovery during the initial 24 hours following exercise, but enhanced various markers of physical/mental energy and fatigue and muscle soreness over 72 hours. Improvements in recovery markers were noted when CP was consumed either during the marathon run, or immediately following exercise.