EFFECT OF N-3 POLYUNSATURATED FATTY ACID SUPPLEMENTATION ON AEROBIC CAPACITY IN YOUNG WOMEN
- VernacularTitle:n-3系多価不飽和脂肪酸の経口補給が若年成人女性の有酸素能力に及ぼす影響
- Author:
HIDEAKI NAKASHIMA
;
HIROMI KITAMURA
;
KUMIKO MINATO
;
SHUHEI KOBAYASHI
- Publication Type:Journal Article
- Keywords:
n-3 polyunsaturated fatty acid (n-3 PUFA);
perilla oil;
aerobic training;
VO2max;
VT
- From:Japanese Journal of Physical Fitness and Sports Medicine
2005;54(2):169-177
- CountryJapan
- Language:Japanese
-
Abstract:
N-3 polyunsaturated fatty acid supplementation has been recognized to affect the peripheral oxygen delivery system with increasing blood rheology. The purpose of the present study was to investigate whether n-3 polyunsaturated fatty acid supplementation, using purified perilla oil rich in α-linoleic acid, improves aerobic capacity in young women. Eighteen young, sedentary female college students were divided into an n-3 polyunsaturated fatty acid supplemented control group (PUFA-C, n=10) and an n-3 polyunsaturated fatty acid supplemented trained group (PUFA-T, n=8). All subjects took 20g of perilla oil (11g of n-3 polyunsaturated fatty acid) in addition to the usual diet throughout the experimental period of 4 weeks. PUFA-T subjects exercised for 30 min on a bicycle ergometer (intensity, 60% of VO2max) 4 times a week for 4 weeks. Maximal oxygen uptake (VO2max) and oxygen uptake at the ventilatory anaerobic threshold level (VT) significantly (p<0.05) increased after treatment in both groups. However, the endurance time in the exhaustive exercise test significantly (p<0.05) increased in the PUFA-T group only. Increasing rates of VO2max and VT with treatment for the PUFA-C group were lower than those for the PUFA-T group (VO2max, 12.6% vs 14.4%, VT, 9.7% vs 16.9%). After treatment, these values returned to baseline levels within 2 months of the recovery period without n-3 polyunsaturated fatty acid supplementation in both groups. Only for the PUFA-T group, VO2max and VT at 2 months after the treatment period were significantly (p<0.05) higher compared with baseline levels. These results suggest that n-3 polyunsaturated fatty acid supplementation might have a beneficial effect on improving aerobic capacity with increasing peripheral oxygen delivery. However, n-3 polyunsaturated fatty acid supplementation was less effective than aerobic training.
