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1.
Food Sci Biotechnol ; 29(12): 1755-1762, 2020 Dec.
Article in English | MEDLINE | ID: mdl-33282442

ABSTRACT

The objective of this randomized, double-blind, placebo-controlled, crossover study was to examine the effects of onion extract containing concentrated cysteine sulfoxides on improving sleep quality. In total, 30 healthy men and women who were dissatisfied with their sleep consumed the test food sample (onion extract tablets) for 5 days. The delta power during non-rapid eye movement sleep and the delta power per minute in the first sleep cycle increased significantly with the intake of onion extract containing concentrated cysteine sulfoxides compared with the intake of placebo. A significant decline in sleep latency was also observed. Salivary α-amylase level, a stress indicator, decreased significantly with the intake of onion extract containing concentrated cysteine sulfoxides compared with the intake of placebo. These findings indicate that onion extract containing concentrated cysteine sulfoxides alleviates stress, improves the quality of sleep and promotes smooth transition into sleep.

2.
Plant Foods Hum Nutr ; 73(3): 161-165, 2018 Sep.
Article in English | MEDLINE | ID: mdl-29671172

ABSTRACT

Metabolic syndrome is a risk factor for cardiovascular diseases and has become increasingly common in Japan. Epidemiological studies show inverse associations between intake of whole wheat grains and metabolic syndrome, but few dietary intervention trials have investigated the effect of whole wheat grain consumption. It was investigated whether a diet in which refined wheat bread (RW diet) was substituted by whole grain wheat bread (WW diet) would reduce visceral fat obesity in Japanese subjects. A randomized double-blind placebo-controlled intervention study was conducted in 50 Japanese subjects with body mass index (BMI) ≥ 23 kg/m2. Subjects were randomly assigned WW (WW group) or RW diets (RW group) for 12 weeks. Blood samples and computed tomography scans were obtained every 6th week. The WW group showed decrease (-4 cm2) in visceral fat area (VFA) (p < 0.05), whereas the RW group showed no significant changes. These time-dependent changes were significantly different between the groups. WW diet led to significant and safe reductions in VFA in subjects with BMI ≥ 23 kg/m2. WW diet may contribute to preventing visceral fat obesity.


Subject(s)
Cardiovascular Diseases/prevention & control , Dietary Fiber/pharmacology , Intra-Abdominal Fat/metabolism , Metabolic Syndrome/diet therapy , Obesity/diet therapy , Triticum , Whole Grains , Adult , Blood Chemical Analysis , Body Mass Index , Bread , Cardiovascular Diseases/blood , Diet , Double-Blind Method , Female , Humans , Japan , Male , Metabolic Syndrome/blood , Middle Aged , Obesity/blood , Young Adult
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