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Article ; Online: Prediction of the Physical Activity Level of Community-Dwelling Older Japanese Adults with a Triaxial Accelerometer Containing a Classification Algorithm for Ambulatory and Non-Ambulatory Activities.

Tanaka, Shigeho / Ishikawa-Takata, Kazuko / Nakae, Satoshi / Sasaki, Satoshi

2023 Volume 23, Issue 10

Abstract: Accurate methods for the prediction of the total energy expenditure and physical activity level (PAL) in community-dwelling older adults have not been established. Therefore, we examined the validity of estimating the PAL using an activity monitor ( ... ...

Abstract	Accurate methods for the prediction of the total energy expenditure and physical activity level (PAL) in community-dwelling older adults have not been established. Therefore, we examined the validity of estimating the PAL using an activity monitor (Active style Pro HJA-350IT, [ASP]) and proposed correction formulae for such populations in Japan. Data for 69 Japanese community-dwelling adults aged 65 to 85 years were used. The total energy expenditure in free-living conditions was measured with the doubly labeled water method and the measured basal metabolic rate. The PAL was also estimated from metabolic equivalent (MET) values obtained with the activity monitor. Adjusted MET values were also calculated with the regression equation of Nagayoshi et al. (2019). The observed PAL was underestimated, but significantly correlated, with the PAL from the ASP. When adjusted using the Nagayoshi et al. regression equation, the PAL was overestimated. Therefore, we developed regression equations to estimate the actual PAL (Y) from the PAL obtained with the ASP for young adults (X) as follows: women: Y = 0.949 × X + 0.205, mean ± standard deviation of the prediction error = 0.00 ± 0.20; men: Y = 0.899 × X + 0.371, mean ± standard deviation of the prediction error = 0.00 ± 0.17.
MeSH term(s)	Aged ; Female ; Humans ; Male ; Accelerometry ; Algorithms ; East Asian People ; Exercise ; Independent Living ; Aged, 80 and over
Language	English
Publishing date	2023-05-22
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23104960
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: The Acute Effects of a Single Dose of Molecular Hydrogen Supplements on Responses to Ergogenic Adjustments during High-Intensity Intermittent Exercise in Humans.

Alharbi, Ahad Abdulkarim D / Iwamoto, Noriaki / Ebine, Naoyuki / Nakae, Satoshi / Hojo, Tatsuya / Fukuoka, Yoshiyuki

Nutrients

2022 Volume 14, Issue 19

Abstract: This research examined the effects of single-dose molecular hydrogen ( ... ...

Abstract	This research examined the effects of single-dose molecular hydrogen (H
MeSH term(s)	Calcium/metabolism ; Gases/metabolism ; High-Intensity Interval Training ; Humans ; Hydrogen/metabolism ; Muscle, Skeletal/metabolism ; Oxygen Consumption/physiology ; Performance-Enhancing Substances/metabolism ; Powders
Chemical Substances	Gases ; Performance-Enhancing Substances ; Powders ; Hydrogen (7YNJ3PO35Z) ; Calcium (SY7Q814VUP)
Language	English
Publishing date	2022-09-24
Publishing country	Switzerland
Document type	Journal Article ; Randomized Controlled Trial
ZDB-ID	2518386-2
ISSN	2072-6643 ; 2072-6643
ISSN (online)	2072-6643
ISSN	2072-6643
DOI	10.3390/nu14193974
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Article ; Online: Geospatial intelligence system for evaluating the work environment and physical load of factory workers

Nakae, Satoshi / Ogiso, Satoki / Mori, Ikue / Miura, Takahiro / Haga, Yasunori / Hatakeyama, Shintaro / Kimura, Kengo / Sugi, Takanori / Kimura, Atsushi / Kurata, Takeshi

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

2023 Volume 2023, Page(s) 1–5

Abstract: This study aimed to assess the effectiveness of methods for evaluating the environmental and physical loads on workers in manufacturing plants, considering their locations. Participants were employees of DENSO CORPORATION's manufacturing facilities, and ... ...

Abstract	This study aimed to assess the effectiveness of methods for evaluating the environmental and physical loads on workers in manufacturing plants, considering their locations. Participants were employees of DENSO CORPORATION's manufacturing facilities, and environmental sensors (for temperature and humidity) and BLE beacons were installed to cover the work area. Questionnaires were completed by the participants twice to assess their thermal comfort and fatigue in the work environment. The results showed that a regression prediction model with an adjusted R-squared of 0.418 for fixed-point temperature and 0.495 for perceived temperature was developed for thermal comfort. No linear relationship was found between environmental factors and fatigue, and a decision tree analysis was conducted. Relative humidity and activity level, along with temperature, were selected as predictor variables. The findings suggest that it is possible to estimate the work environment and workload without adding additional measurement-related burdens or challenges. This highlights the usefulness of the proposed method, which takes into account the environmental distribution throughout the work area rather than relying solely on conventional fixed-point observation data, for assessing workers' exposure to the environment and preventing occupational accidents.Clinical Relevance- The proposed approach, combining indoor localization with environmental status, can estimate the condition of workers and is expected to be a good solution for preventing occupational accidents and enhancing workers' health.
MeSH term(s)	Humans ; Humidity ; Temperature ; Workload ; Working Conditions ; Fatigue
Language	English
Publishing date	2023-12-11
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	2694-0604
ISSN (online)	2694-0604
DOI	10.1109/EMBC40787.2023.10340890
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Article ; Online: Application of Molecular Hydrogen as an Antioxidant in Responses to Ventilatory and Ergogenic Adjustments during Incremental Exercise in Humans.

Alharbi, Ahad Abdulkarim D / Ebine, Naoyuki / Nakae, Satoshi / Hojo, Tatsuya / Fukuoka, Yoshiyuki

Nutrients

2021 Volume 13, Issue 2

Abstract: We investigated effects of molecular hydrogen ( ... ...

Abstract	We investigated effects of molecular hydrogen (H
MeSH term(s)	Administration, Oral ; Antioxidants/administration & dosage ; Antioxidants/therapeutic use ; Bicarbonates/blood ; Blood Gas Analysis ; Breath Tests ; Carbon Dioxide/analysis ; Cross-Over Studies ; Double-Blind Method ; Exercise/physiology ; Humans ; Hydrogen/administration & dosage ; Hydrogen/therapeutic use ; Male ; Muscle, Skeletal/chemistry ; Oxygen/analysis ; Partial Pressure ; Powders ; Spectroscopy, Near-Infrared ; Young Adult
Chemical Substances	Antioxidants ; Bicarbonates ; Powders ; Carbon Dioxide (142M471B3J) ; Hydrogen (7YNJ3PO35Z) ; Oxygen (S88TT14065)
Language	English
Publishing date	2021-01-30
Publishing country	Switzerland
Document type	Journal Article ; Randomized Controlled Trial
ZDB-ID	2518386-2
ISSN	2072-6643 ; 2072-6643
ISSN (online)	2072-6643
ISSN	2072-6643
DOI	10.3390/nu13020459
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Article ; Online: Age-Related Decline in Physical Activity Level in the Healthy Older Japanese Population.

Ishikawa-Takata, Kazuko / Nakae, Satoshi / Sasaki, Satoshi / Katsukawa, Fuminori / Tanaka, Shigeho

Journal of nutritional science and vitaminology

2021 Volume 67, Issue 5, Page(s) 330–338

Abstract: The Dietary Reference Intakes 2020 divided the older population into those aged 65-74 y and those over 75 y old. However, physical activity level in each age group was not specified. This study examined age-related differences in physical activity level ... ...

Abstract	The Dietary Reference Intakes 2020 divided the older population into those aged 65-74 y and those over 75 y old. However, physical activity level in each age group was not specified. This study examined age-related differences in physical activity level among healthy Japanese older people, and the effect of lifestyles on these differences. In total, 70 people (22 men, 48 women) aged 65-85 y old participated in this study. Total energy expenditure was measured using the doubly labeled water method, and basal metabolic rate using expired gas concentration and volume. The Physical Activity Scale for the Elderly and a triaxial accelerometer were used to assess physical activities. Physical activity level was significantly higher among 65-74 y old (median 1.86) than those over 75 y old (1.76). However, the Physical Activity Scale for the Elderly did not show any significant differences between the age groups. The duration of physical activity with 3.0-5.9 metabolic equivalents was longer for both locomotive and household activities among 65-74 y old than those over 75 y old. Younger participants walked a median of 6,364 steps a day, compared with 4,419 steps for older people. The 65-74 y old participants involved in paid work or who habitually exercised, and those over 75 y old taking more than 40 min a day of moderate to vigorous physical activity, and walking more than the median level for their sex and age group had significantly higher physical activity levels.
MeSH term(s)	Aged ; Energy Metabolism ; Exercise ; Female ; Health Status ; Humans ; Japan ; Male ; Walking
Language	English
Publishing date	2021-10-31
Publishing country	Japan
Document type	Journal Article
ZDB-ID	191366-9
ISSN	1881-7742 ; 0301-4800
ISSN (online)	1881-7742
ISSN	0301-4800
DOI	10.3177/jnsv.67.330
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Article ; Online: Step-count outcomes of 13 different activity trackers: Results from laboratory and free-living experiments.

Nakagata, Takashi / Murakami, Haruka / Kawakami, Ryoko / Tripette, Julien / Nakae, Satoshi / Yamada, Yosuke / Ishikawa-Takata, Kazuko / Tanaka, Shigeho / Miyachi, Motohiko

Gait & posture

2022 Volume 98, Page(s) 24–33

Abstract: Background: Many activity trackers have been developed, but steps can still be inconsistent from one monitor to another.: Research question: What are the differences and associations between the steps of 13 selected consumer-based and research-grade ... ...

Abstract	Background: Many activity trackers have been developed, but steps can still be inconsistent from one monitor to another. Research question: What are the differences and associations between the steps of 13 selected consumer-based and research-grade wearable devices during 1 standardized day in a metabolic chamber and 15-day free-living trials? Methods: In total, 19 healthy adults between 21 and 50 years-old participated in this study. Participants were equipped with 12 accelerometer-based active trackers and one pedometer (Yamasa) in order to monitor the number of steps per day. The devices were worn on the waist (ActiGraph, Omron, Actimarker, Lifedorder, Withings, and Yamasa) or non-dominant wrist (Fitbit, Garmin, Misfit, EPSON, and Jawbone), or placed in a pocket (Omron CaloriScan, and TANITA). Participants performed structured activities over a 24 h period in a chamber (Standardized day), and steps were monitored in the same participants in free-living trials for 15 successive days using the same monitors (free-living days). Results: When the 13 monitors were ranked by their steps, waist-worn ActiGraph was located at the center (7th) of the monitors both in the Standardized (12,252 ± 598 steps/day, mean ± SD) and free-living days (9295 ± 4027 steps/day). The correlation between the accelerometer-based devices was very high (r = 0.87-0.99). However, the steps of Yamasa was significantly lower in both trials than ActiGraph. The wrist-worn accelerometers had significantly higher steps than other devices both trials (P < 0.05). The differences between ActiGraph and Actimarker or Lifecorder was less than 100 steps/day in the Standardized day, and the differences between ActiGraph and Active Style Pro was less than 100 steps/day in the free-living days. Regression equation was also performed for inter-device compatibility. Significance: Step obtained from the wrist-worn, waist-worn, and pocket-type activity trackers were significantly different from each other but still highly correlated in free-living conditions.
MeSH term(s)	Adult ; Humans ; Young Adult ; Middle Aged ; Fitness Trackers ; Accelerometry/methods ; Exercise ; Actigraphy ; Wearable Electronic Devices ; Reproducibility of Results
Language	English
Publishing date	2022-08-09
Publishing country	England
Document type	Journal Article
ZDB-ID	1162323-8
ISSN	1879-2219 ; 0966-6362
ISSN (online)	1879-2219
ISSN	0966-6362
DOI	10.1016/j.gaitpost.2022.08.004
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Article: A novel method for measuring diet-induced thermogenesis in mice.

Yamazaki, Tomomi / Ikaga, Reina / Li, Dongyang / Nakae, Satoshi / Tanaka, Shigeho

MethodsX

2019 Volume 6, Page(s) 1950–1956

Abstract: Diet-induced thermogenesis (DIT) refers to energy expenditure (EE) related to food consumption. Enhancing DIT can lead to weight loss. Factors that increase DIT are expected to lower body mass index and body fat mass. Although various methods have been ... ...

Abstract	Diet-induced thermogenesis (DIT) refers to energy expenditure (EE) related to food consumption. Enhancing DIT can lead to weight loss. Factors that increase DIT are expected to lower body mass index and body fat mass. Although various methods have been developed for measuring DIT in humans, there is currently no method available for calculating absolute DIT values in mice. Therefore, we attempted to measure DIT in mice by applying the method more commonly used for humans. Mouse energy metabolism was first measured under fasting conditions; EE was plotted against the square root of the activity count, and a linear regression equation was fit to the data. Then, energy metabolism was measured in mice that were allowed to feed ad libitum, and EE was plotted in the same way. We calculated the DIT by subtracting the predicted EE value from the fed EE value for the same activity count. The methodology for measuring DIT in mice may be helpful for researching ways of combatting obesity by increasing DIT. •The methodology for measuring absolute DIT values in mice is developed.•For mice, the proportion of DIT compared with calorie intake and EE are 12.3% and 21.7%, respectively.
Language	English
Publishing date	2019-09-10
Publishing country	Netherlands
Document type	Journal Article
ISSN	2215-0161
ISSN	2215-0161
DOI	10.1016/j.mex.2019.08.016
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Article: A novel method for measuring diet-induced thermogenesis in mice

Yamazaki, Tomomi / Ikaga, Reina / Li, Dongyang / Nakae, Satoshi / Tanaka, Shigeho

MethodsX. 2019, v. 6

2019

Abstract	Diet-induced thermogenesis (DIT) refers to energy expenditure (EE) related to food consumption. Enhancing DIT can lead to weight loss. Factors that increase DIT are expected to lower body mass index and body fat mass. Although various methods have been developed for measuring DIT in humans, there is currently no method available for calculating absolute DIT values in mice. Therefore, we attempted to measure DIT in mice by applying the method more commonly used for humans. Mouse energy metabolism was first measured under fasting conditions; EE was plotted against the square root of the activity count, and a linear regression equation was fit to the data. Then, energy metabolism was measured in mice that were allowed to feed ad libitum, and EE was plotted in the same way. We calculated the DIT by subtracting the predicted EE value from the fed EE value for the same activity count. The methodology for measuring DIT in mice may be helpful for researching ways of combatting obesity by increasing DIT.•The methodology for measuring absolute DIT values in mice is developed.•For mice, the proportion of DIT compared with calorie intake and EE are 12.3% and 21.7%, respectively.
Keywords	body fat ; body mass index ; energy intake ; energy metabolism ; equations ; fasting ; food consumption ; food intake ; humans ; mice ; obesity ; regression analysis ; thermic effect of food ; weight loss
Language	English
Size	p. 1950-1956.
Publishing place	Elsevier B.V.
Document type	Article
ISSN	2215-0161
DOI	10.1016/j.mex.2019.08.016
Database	NAL-Catalogue (AGRICOLA)

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Article: Energy Gap between Doubly Labeled Water-Based Energy Expenditure and Calculated Energy Intake from Recipes and Plate Waste, and Subsequent Weight Changes in Elderly Residents in Japanese Long-Term Care Facilities: CLEVER Study

Nishida, Yuki / Tanaka, Shigeho / Nakae, Satoshi / Yamada, Yosuke / Shirato, Hiroyuki / Hirano, Hirohiko / Sasaki, Satoshi / Katsukawa, Fuminori

Nutrients. 2020 Sept. 02, v. 12, no. 9

2020

Abstract: Unintentional weight loss is a major frailty component; thus, assessing energy imbalance is essential for institutionalized elderly residents. This study examined prediction errors of the observed energy intake (OEI) against the actual energy intake ... ...

Abstract	Unintentional weight loss is a major frailty component; thus, assessing energy imbalance is essential for institutionalized elderly residents. This study examined prediction errors of the observed energy intake (OEI) against the actual energy intake obtained from the doubly labeled water (DLW) method and clarified the relationship between the energy gap obtained by subtracting total energy expenditure (TEE) from OEI and subsequent weight changes in elderly residents in long-term care facilities. Overall, 46 participants were recruited in Japan. TEE was measured using the DLW method, and OEI was calculated from recipes and plate waste simultaneously over a 14–15-day period at baseline. The total energy intake (TEIDLW) was determined on the basis of DLW and weight changes during the DLW period. The weight was longitudinally tracked monthly for 12 months in the 28 residents who still lived at the facilities. OEI was higher than TEIDLW by a mean of 232 kcal/day (15.3%) among 46 residents at baseline. The longitudinal data of 28 residents showed that the energy gap tended to be correlated with the slope of weight change (ρ = 0.337, p = 0.080) and the median value was significantly lower in the weight loss group (152 kcal/day) than in the weight gain group (350 kcal/day) (p < 0.05). In conclusion, weight loss could occur at Japanese long-term care facilities even if the difference obtained by subtracting TEE from OEI was positive because OEI was overestimated by more than 200 kcal/day.
Keywords	Japan ; elderly ; energy expenditure ; energy intake ; long term care ; plate waste ; prediction ; water ; weight gain ; weight loss
Language	English
Dates of publication	2020-0902
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
Note	NAL-light
ZDB-ID	2518386-2
ISSN	2072-6643
ISSN	2072-6643
DOI	10.3390/nu12092677
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Article ; Online: Evaluation of energy intake by brief-type self-administered diet history questionnaire among male patients with stable/at risk for chronic obstructive pulmonary disease.

Nishida, Yuki / Nakamura, Hidetoshi / Sasaki, Satoshi / Shirahata, Toru / Sato, Hideaki / Yogi, Sanehiro / Yamada, Yosuke / Nakae, Satoshi / Tanaka, Shigeho / Katsukawa, Fuminori

BMJ open respiratory research

2021 Volume 8, Issue 1

Abstract: Background and objective: Weight loss and reduced fat-free mass are independent risk factors for mortality among patients with chronic obstructive pulmonary disease (COPD). These factors are important for determining diet therapy and examining the ... ...

Abstract	Background and objective: Weight loss and reduced fat-free mass are independent risk factors for mortality among patients with chronic obstructive pulmonary disease (COPD). These factors are important for determining diet therapy and examining the validity of assessment for energy intake (EI). We assessed the agreement of EI between a brief-type self-administered diet history questionnaire (BDHQ) and the doubly labelled water (DLW) method among male patients with stable/at risk for COPD. Method: In this cross-sectional observational study, data for 33 male patients were analysed. At the first visit, EI was estimated using a BDHQ (EI Results: EI Conclusions: The BDHQ underestimated EI among male patients with stable/at risk for COPD, but this estimation error was within an acceptable range compared with previous studies. EI
MeSH term(s)	Body Mass Index ; Cross-Sectional Studies ; Diet Records ; Energy Intake ; Energy Metabolism ; Humans ; Male ; Pulmonary Disease, Chronic Obstructive ; Surveys and Questionnaires
Language	English
Publishing date	2021-08-03
Publishing country	England
Document type	Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
ZDB-ID	2736454-9
ISSN	2052-4439 ; 2052-4439
ISSN (online)	2052-4439
ISSN	2052-4439
DOI	10.1136/bmjresp-2020-000807
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