Effects of Matcha Green Tea Powder on Cognitive Functions of Community-Dwelling Elderly Individuals

Matcha Green Tea Powder contains a variety of active ingredients beneficial to health, such as tea catechins, lutein and vitamin K. It is also known that these ingredients confer benefits upon cognitive functions of elderly people. Therefore, we aimed to investigate the relationship between a daily supplementation of Matcha and the change in cognitive functions of community-dwelling elderly people. A randomized, double-blind, placebo-controlled 12-week trial was performed. Sixty-one participants were recruited and randomly assigned to receive test drink containing 3 g powder from fresh Matcha or placebo powder per day. Changes in cognitive function were assessed utilizing a psychometric test battery. Daily food intake was assessed by a Brief-type Self-administered Diet History Questionnaire (BDHQ). In the gender-specific analysis, a significant cognitive enhancement was observed in the Montreal Cognitive Assessment (MoCA) score in the active group of women. In dietary analysis, we found a significant inverse correlation between consumption of vitamin K in daily diet, excluding test drinks, and change in MoCA. The present study suggests that daily supplementation of Matcha Green Tea Powder has protective effects against cognitive decline in community-dwelling elderly women.

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Clodronate Reduces the Incidence of Fractures in Community-Dwelling Elderly Women Unselected for Osteoporosis: Results of a Double-Blind, Placebo-Controlled Randomized Study

Journal of Bone and Mineral Research ◽

10.1359/jbmr.061008 ◽

2006 ◽

Vol 22 (1) ◽

pp. 135-141 ◽

Cited By ~ 131

Author(s):

Eugene V McCloskey ◽

Monique Beneton ◽

Diane Charlesworth ◽

Karthik Kayan ◽

Dominic de Takats ◽

...

Keyword(s):

Elderly Women ◽

Randomized Study ◽

Community Dwelling ◽

Double Blind ◽

Double Blind Placebo

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A Study of Changes of Physical Functions According to Changes in Cognitive Functions in Community-Dwelling Elderly People Who Participated in an Exercise Program

Journal of Sports Science and Medicine ◽

10.52082/jssm.2021.474 ◽

2021 ◽

pp. 474-481

Author(s):

Noriko Kimura ◽

Etsuko Maeshima ◽

Sayaka Tomokane ◽

Akiko Ikeshima ◽

Megumi Maeda ◽

...

Keyword(s):

Cognitive Function ◽

Elderly People ◽

Cognitive Functions ◽

Exercise Program ◽

Japanese Version ◽

Community Dwelling ◽

Community Based ◽

Significant Difference ◽

Before And After ◽

Physical Functions

Although it is known that physical function differs depending on the state of cognitive function, there are no studies that consider changes in cognitive functions when evaluating physical functions of participants before and after an exercise program. In this study, it was observed changes in cognitive function and physical functions of elderly people who participated in a community-based exercise program for 6 months, and examined changes in physical functions that took into account changes in cognitive functions. Forty-nine participants, whose cognitive and physical functions were both measured before and after the exercise program, were included in the analysis. The Japanese version of the Montreal Cognitive Assessment (MoCA-J) was used to assess participants' cognitive function and to determine whether they had mild cognitive impairment (MCI). To assess physical functions, a battery of physical tests was completed. Participants were classified into four groups (before/after; non-MCI/non-MCI, MCI/MCI, non-MCI/MCI, and MCI/non-MCI) according to the changes in cognitive functions after six months. There was no significant difference in the physical functions of the four groups before the start of the program. When changes in physical functions were examined in each group, some changes in physical functions were observed in the groups other than the non-MCI/MCI group. However, there was no significant difference in the physical functions between the four groups after the program. It was suggested that changes in physical functions of elderly people who participated in a community-based exercise program over a 6-month period were not different due to changes in cognitive functions.

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Relationship between elevated impulsivity and cognitive declines in elderly community-dwelling individuals

Scientific Reports ◽

10.1038/s41598-020-78124-5 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Keisuke Sakurai ◽

Haowei Li ◽

Noriko Inamura ◽

Nobutaka Masuoka ◽

Tatsuhiro Hisatsune

Keyword(s):

Elderly People ◽

Cognitive Functions ◽

Psychological Symptoms ◽

Memory Function ◽

Community Dwelling ◽

Delayed Recall ◽

Memory Functions ◽

Logical Memory ◽

Wechsler Memory Scale ◽

State Examination

AbstractImpulse control disorders are recognized as one of the behavioral and psychological symptoms of dementia (BPSD). Majority of studies on the treatment of BPSD related to impulsivity have rather focused on the aggression and agitation. In particular, it has not been investigated how cognitive declines are associated with impulsivity in community-dwelling elderly people. Here, we have measured the cognitive and memory functions and impulsivity of 212 elderly community-dwelling people using a psychometric test battery and analyzed the correlation between their level of impulsivity and cognitive functions by multiple regression analysis. We found an elevation of impulsivity, which was evaluated by the Barratt Impulsiveness Scale-11, closely related to decline of cognitive functions, which were evaluated by the Montreal Cognitive Assessment and the Mini-Mental State Examination, and Logical Memory function, which were evaluated by the Wechsler Memory Scale-Delayed Recall. Then we have divided them into groups based on the severity of cognitive decline and conducted an analysis of each group, the result of which showed that as this tendency was particularly noticeable in the suspected dementia group. Therefore, we have concluded that heightened impulsivity is negatively associated with cognitive and memory functions in community-dwelling elderly people.

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Faculty Opinions recommendation of Clodronate reduces the incidence of fractures in community-dwelling elderly women unselected for osteoporosis: results of a double-blind, placebo-controlled randomized study.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1083751.536665 ◽

2007 ◽

Author(s):

Rene Rizzoli

Keyword(s):

Elderly Women ◽

Randomized Study ◽

Community Dwelling ◽

Double Blind ◽

Double Blind Placebo

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Vitamin D–vitamin K interaction: effect of vitamin D supplementation on serum percentage undercarboxylated osteocalcin, a sensitive measure of vitamin K status, in Danish girls

British Journal Of Nutrition ◽

10.1017/s0007114510001935 ◽

2010 ◽

Vol 104 (8) ◽

pp. 1091-1095 ◽

Cited By ~ 14

Author(s):

Eibhlís O'Connor ◽

Christian Mølgaard ◽

Kim F. Michaelsen ◽

Jette Jakobsen ◽

Kevin D. Cashman

Keyword(s):

Vitamin D ◽

Vitamin K ◽

Elderly Women ◽

Vitamin D Supplementation ◽

Undercarboxylated Osteocalcin ◽

Vitamin D Status ◽

Serum Samples ◽

Double Blind ◽

Hydroxyvitamin D ◽

Causal Nature

There is some evidence for a nutritional interaction between vitamin D and vitamin K status. We have recently reported that serum percentage undercarboxylated osteocalcin (%ucOC; a marker of vitamin K status) was inversely correlated with serum 25-hydroxyvitamin D (25(OH)D) concentration (reflective of vitamin D status) in healthy Danish girls (aged 11–12 years), in line with a similar relationship reported in elderly women. While the causal nature of the relationship between vitamin D status and serum %ucOC has been tested in studies of elderly women, it has not been investigated in children. The objective of the present study was to test the hypothesis that improving vitamin D status significantly lowers serum %ucOC. Serum samples from sixty-seven healthy Danish girls (aged 11–12 years), who participated in a 12-month double-blind, placebo-controlled, vitamin D3intervention trial were used for the present study. These girls were a subset of subjects which began and finished the intervention during wintertime, thus avoiding the influence of seasonality on vitamin D status. A total of thirty-three and thirty-four of the girls had been randomised to treatment with 10 μg vitamin D3per d and placebo, respectively, for 12 months. Total osteocalcin and the fraction of ucOC in serum (via enzyme-immunoassay) as well as serum 25(OH)D (via HPLC) were assessed at baseline and end-point. Vitamin D3supplementation significantly increased serum 25(OH)D (21·6 %;P < 0·002) but had no effect on serum %ucOC (P>0·8). In conclusion, the findings of the present intervention study in young girls suggest that vitamin D supplementation does not affect serum %ucOC, a marker of vitamin K status.

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Protective effects of Seoritae Chungkukjang added with green tea powder against 3-morpholinosydnonimine-induced oxidative stress

Korean Journal of Agricultural Science ◽

10.7744/cnujas.2015.42.4.407 ◽

2015 ◽

Vol 42 (4) ◽

pp. 407-414

Author(s):

Eun-Ju Cho ◽

Hyun-Young Park ◽

Sang-Hyun Lee ◽

Hyun-Young Kim

Keyword(s):

Oxidative Stress ◽

Green Tea ◽

Protective Effects ◽

Green Tea Powder

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Caffeine and Placebo Expectation

Journal of Psychophysiology ◽

10.1027/0269-8803.21.2.91 ◽

2007 ◽

Vol 21 (2) ◽

pp. 91-99 ◽

Cited By ~ 8

Author(s):

Yunfeng Sun ◽

Yinling Zhang ◽

Ning He ◽

Xufeng Liu ◽

Danmin Miao

Keyword(s):

Blood Pressure ◽

Heart Rate ◽

Sleep Deprivation ◽

Cognitive Performance ◽

Cognitive Functions ◽

Cardiovascular Regulation ◽

Double Blind ◽

Positive Effects ◽

Pressure Tests ◽

Healthy Males

Abstract. Caffeine placebo expectation seems to improve vigilance and cognitive performance. This study investigated the effect of caffeine and placebo expectation on vigilance and cognitive performance during 28 h sleep deprivation. Ten healthy males volunteered to take part in the double-blind, cross-over study, which required participants to complete five treatment periods of 28 h separated by 1-week wash-out intervals. The treatments were no substance (Control); caffeine 200 mg at 00:00 (C200); placebo 200 mg at 00:00 (P200); twice caffeine 200 mg at 00:00 and 04:00 (C200-C200); caffeine 200 mg at 00:00 and placebo 200 mg at 04:00 (C200-P200). Participants were told that all capsules were caffeine and given information about the effects of caffeine to increase expectation. Vigilance was assessed by a three-letter cancellation test, cognitive functions by the continuous addition test and Stroop test, and cardiovascular regulation by heart rate and blood pressure. Tests were performed bihourly from 00:00 to 10:00 of the second day. Results indicated that C200-P200 and C200-C200 were more alert (p < .05) than Control and P200. Their cognitive functions were higher (p < .05) than Control and P200. Also, C200-P200 scored higher than C200 in the letter cancellation task (p < .05). No test showed any significant differences between C200-P200 and C200-C200. The results demonstrated that the combination of caffeine 200 mg and placebo 200 mg expectation exerted prolonged positive effects on vigilance and cognitive performance.

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