PMID- 3687829 OWN - NLM STAT- MEDLINE DCOM- 19880119 LR - 20180330 IS - 0002-9165 (Print) IS - 0002-9165 (Linking) VI - 46 IP - 6 DP - 1987 Dec TI - Vitamin B-6 metabolism as affected by exercise in trained and untrained women fed diets differing in carbohydrate and vitamin B-6 content. PG - 995-1004 AB - To assess the effect of exercise on vitamin B-6 metabolism in women, five young-trained, five young-untrained, and five postmenopausal-untrained women were alternately fed four diets and then exercised (80% VO2 max; 20 min) after each diet. The following diets were fed: 2 wk moderate carbohydrate (CHO) (49%) (2.3 mg B-6); 1 wk high CHO (64%) (2.4 mg B-6); 2 wk moderate CHO + B-6 (10.3 mg B-6); 1 wk high CHO + B-6); 1 wk high CHO + B-6 (10.4 mg B-6). Blood was drawn pre- and postexercise and post-30 min and post-60 min of exercise and analyzed for plasma pyridoxal 5'-phosphate (PLP) and total B-6. Twenty-four-hour urines were analyzed for 4-pyridoxic acid and urinary B-6. PLP and total B-6 increased significantly with exercise and decreased significantly from post- to post-60 min for all diets. Four-pyridoxic acid increased significantly from the preexercise day to the day of exercise for all diets. Although there was a significant change in B-6 metabolism with exercise, neither training, increased CHO, nor age had an effect on this change. FAU - Manore, M N AU - Manore MN AD - Department of Foods and Nutrition, Oregon State University, Corvallis 97331. FAU - Leklem, J E AU - Leklem JE FAU - Walter, M C AU - Walter MC LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Clin Nutr JT - The American journal of clinical nutrition JID - 0376027 RN - 0 (Dietary Carbohydrates) RN - 5K18793O8D (Pyridoxic Acid) RN - 5V5IOJ8338 (Pyridoxal Phosphate) RN - KV2JZ1BI6Z (Pyridoxine) SB - IM MH - Adult MH - Dietary Carbohydrates/*administration & dosage MH - Female MH - Humans MH - Menopause MH - Middle Aged MH - *Physical Exertion MH - *Physical Fitness MH - Pyridoxal Phosphate/blood MH - Pyridoxic Acid/urine MH - Pyridoxine/administration & dosage/*metabolism EDAT- 1987/12/01 00:00 MHDA- 1987/12/01 00:01 CRDT- 1987/12/01 00:00 PHST- 1987/12/01 00:00 [pubmed] PHST- 1987/12/01 00:01 [medline] PHST- 1987/12/01 00:00 [entrez] AID - 10.1093/ajcn/46.6.995 [doi] PST - ppublish SO - Am J Clin Nutr. 1987 Dec;46(6):995-1004. doi: 10.1093/ajcn/46.6.995.