Maternal aerobic exercise and vitamin B-6 status.
Effects of an aerobic walking program during gestational weeks 22-30 on vitamin B-6 status and birth outcome were studied in 28 healthy pregnant women, aged 21-36 y, receiving vitamin-mineral supplements. Mean daily vitamin B-6 intake, excluding a 10-mg supplement, was 1.81 mg. Subjects in the walking (n = 18) and nonwalking (n = 10) groups had similar microbiologically assessed plasma total vitamin B-6 levels and radioenzymatically assessed plasma pyridoxal phosphate concentrations. One walker at 22 wk and at 30 wk and a second walker at 30 wk had plasma total vitamin B-6 concentrations in the low-normal range; the same was true for plasma pyridoxal phosphate levels except that the 30-wk value for the walker who was low at 22 wk was missing. Birth-outcome measurements were similar for both groups. Participation in the walking program slightly improved aerobic fitness without affecting vitamin B-6 status or birth outcome in pregnant women taking vitamin-mineral supplements.
Yates
C Y
CY
Department of Human Nutrition and Foods, Virginia Polytechnic Institute and State University, Blacksburg 24061.
Boylan
L M
LM
Lewis
R D
RD
Driskell
J A
JA
D004032:Diet; D005260:Female; D006801:Humans; D009994:Osmolar Concentration; D005082:Physical Exertion; D011247:Pregnancy; D011256:Pregnancy Outcome; D011732:Pyridoxal Phosphate / Q000097:blood; D011736:Pyridoxine / Q000008:administration & dosage / Q000097:blood*
D011732:Pyridoxal Phosphate; D011736:Pyridoxine