title: The effects of postexercise consumption of a kefir beverage on performance and recovery during intensive endurance training.
abstract: This study was designed to determine whether kefir accentuates the positive health benefits assessed by measures in fitness, body composition, or both, as a measure of cardiovascular disease risk as well as the biomarker C-reactive protein (CRP). Sixty-seven adult males and females aged 18 to 24 yr were assigned to 1 of 4 groups: (1) endurance training + control beverage, (2) endurance training +kefir beverage,(3) active control + control beverage, or (4) active control + kefir beverage. The exercise groups completed 15 wk of structured endurancetraining while the active control groups maintained their usual exercise routine. Additionally, each group was assigned to either a kefir or a calorie/macronutrient matched placebo beverage that was consumed twice per week. No significant interactions were found among groups with respect to outcome variables with the exception of serum CRP. The endurance training was effective in improving 1.5-mile (2.41 km) times and kefir supplementation may have been a factor in attenuating the increase in CRP that was observed over the course of the intervention period. This preliminary study suggests that kefir may be involved in improving the risk profile for cardiovascular disease as defined by CRP.
authors: School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge 70803. Electronic address: kobrie9@lsu.edu.
authors: K V
authors: KV
authors: O'Brien
authors: Rocky Mountain Cancer Rehabilitation Institute, School of Sport and Exercise Science, University of Northern Colorado, Greeley 80639.
authors: L K
authors: LK
authors: Stewart
authors: Laboratory of Nutrient Sensing and Adipocyte Signaling, Pennington Biomedical Research Center, Baton Rouge 70808.
authors: L A
authors: LA
authors: Forney
authors: School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge 70803.
authors: K J
authors: KJ
authors: Aryana
authors: School of Nutrition and Food Sciences, Louisiana State University, Baton Rouge 70803.
authors: W
authors: W
authors: Prinyawiwatkul
authors: School of Animal Sciences, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge 70803.
authors: C A
authors: CA
authors: Boeneke
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers / Q000097:blood; D001823:Body Composition; D002097:C-Reactive Protein / Q000378:metabolism; D043302:Cultured Milk Products; D002149:Energy Intake; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D010807:Physical Endurance; D055815:Young Adult
chemical_list: D015415:Biomarkers; D002097:C-Reactive Protein
keywords: C-reactive protein; exercise; inflammation; kefir; probiotics