Muscle Damage

Inflammation

24 g protein before, 12 g during, and 24 g after eccentric exercise

Protein supplement

Placebo

ASU-NCRC Human Performance Lab

Protein and Recovery From Exercise-induced Muscle Damage

Influence of Protein-amino Acid Supplementation on Recovery From Exercise-induced Muscle Damage in NASCAR Pit Crew Athletes

Serum myoglobin and creatine kinase will be measured pre- and post-eccentric exercise, and each morning during three days recovery.

Measured pre- and post-eccentric exercise, and each morning during 3 days of recovery.
Kneeling medicine ball toss.
Vertical jump.
Wingate anaerobic power cycling test.

Measured pre- and post-eccentric exercise, and during each morning during 3 days recovery.
DOMS will be self-reported by the subjects using a 10-point Likert-scale questionnaire (Res Quart Exerc Sport 1993;64:103-107).

Measured from blood samples taken pre- and post-eccentric exercise, and each morning during 3 days recovery.
Serum C-reactive protein (CRP) will be analyzed by the clinical hematology laboratory at the Carolina Medical Center (Charlotte, NC). CRP will be measured using an LX-20 clinical analyzer (Beckman Coulter Electronics, Brea, CA). Total plasma concentrations of interleukin-6 will be determined using an electrochemiluminescence based solid-phase sandwich immunoassay (Meso Scale Discovery, Gaithersburg, MD).

Will be measured from blood samples taken pre- and post-eccentric exercise, and each morning during 3 days of recovery.
Granulocyte and monocyte phagocytosis (G-PHAG, M-PHAG), and oxidative burst activity (G-OBA, M-OBA) will be assayed at the immunology laboratory at UNC-Charlotte (Dr. Didier Dreau).

l glutamine/fatigue

Protein and Recovery From Exercise-induced Muscle Damage

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