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Article ; Online: Is Subjective Age Associated with Physical Fitness in Community-Dwelling Older Adults?

Jin Wang / Jiabin Yu / Xiaoguang Zhao

International Journal of Environmental Research and Public Health, Vol 19, Iss 6841, p

2022 Volume 6841

Abstract: Although subjective age has been associated with a range of health-related outcomes, there has been little systematic study on the relationship between the subjective age and physical fitness in a given population. The purpose of this study was to ... ...

Abstract	Although subjective age has been associated with a range of health-related outcomes, there has been little systematic study on the relationship between the subjective age and physical fitness in a given population. The purpose of this study was to determine the prospective association between subjective age and physical fitness in community-dwelling older adults. A sample of 276 older people who lived in the community was studied. Subjective age was measured by a face-to-face interview. Grip strength, balancing on one leg with eyes open, the 30 s chair stand test, 4 m habitual walk, and 6 min walk test were measured to reflect physical fitness. Results indicated that the felt younger older adults had a higher level of physical fitness compared to their felt older and felt the same counterparts. Multiple linear regression analysis indicated that all the measured physical fitness items were significantly associated with subjective age in older men. All of the measured physical fitness items except for the 4 m habitual walk were remarkably related to subjective age in older women. The findings suggest that subjective age is closely associated with physical fitness in community-dwelling older adults. Much attention should be paid to the promotion of physical fitness to improve the subjective age of older adults.
Keywords	subjective age ; physical fitness ; physical activity ; older adults ; health outcomes ; Medicine ; R
Subject code	300 ; 796
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Is obesity associated with foot structure and the strength of muscles that move the ankle in adult men?

Xiaoguang Zhao / Fei Hu / Jiabin Yu / Zhexiao Zhou

Journal of Men's Health, Vol 18, Iss 3, p

2022 Volume 057

Abstract: Background and objective: Obesity is associated with several internal medicine diseases and also impacts the musculoskeletal system, particularly in the foot and ankle. Obesity potentially affects the foot structure and the strength of the muscles ... ...

Abstract	Background and objective: Obesity is associated with several internal medicine diseases and also impacts the musculoskeletal system, particularly in the foot and ankle. Obesity potentially affects the foot structure and the strength of the muscles responsible for moving the ankle. The purpose of this study was to explore the association between obesity, foot structure and the strength of the muscles which move the ankle in adult men. Material and methods: 66 adult men were divided into a non-obese group (n = 19), an overweight group (n = 35) and an obese group (n = 12), based on each participant’s body mass index (BMI). Foot structure was measured using a three-dimensional foot scanner and the strength of the muscles that move the ankle was assessed with a dynamometer. Results: The study demonstrated the height, width and girth indicators of the foot to be greater among those in the overweight and obese groups than participants in the non-obese group (p < 0.05) and positive relationships were discovered between BMI and instep height, forefoot and rearfoot width and forefoot and instep girth (r = 0.223–0.423, p < 0.05). The overweight and obese men exhibited lower strength in the muscles that move the ankle (peak torque per body weight) than the non-obese men (p < 0.05) and correlation analysis proved BMI to be positively associated with dorsiflexion peak torque at 30 and 120 °/s angular velocity (r = 0.385 and 0.310, p < 0.05) and negatively associated with plantarflexion, dorsiflexion, eversion and inversion peak torque per body weight at 30 °/s and 120 °/s angular velocity (r = –0.244–0.462, p < 0.05). Conclusion: The findings of the study show that the height, width, and girth of the foot are greater and the strength of the muscles responsible for moving the ankle is lower in overweight and obese men.
Keywords	body mass index ; foot and ankle ; muscle strength ; musculoskeletal disorders ; obesity ; Medicine (General) ; R5-920
Subject code	796
Language	English
Publishing date	2022-02-01T00:00:00Z
Publisher	MRE PRESS
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Piezoelectricity and topological quantum phase transitions in two-dimensional spin-orbit coupled crystals with time-reversal symmetry

Jiabin Yu / Chao-Xing Liu

Nature Communications, Vol 11, Iss 1, Pp 1-

2020 Volume 9

Abstract: The linear response and topological electronic properties of a material both depend on the underlying crystal symmetry. Here the authors study how topological phase transitions in two-dimensional materials manifest themselves in the piezoelectric ... ...

Abstract	The linear response and topological electronic properties of a material both depend on the underlying crystal symmetry. Here the authors study how topological phase transitions in two-dimensional materials manifest themselves in the piezoelectric response.
Keywords	Science ; Q
Language	English
Publishing date	2020-05-01T00:00:00Z
Publisher	Nature Publishing Group
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Piezoelectricity and topological quantum phase transitions in two-dimensional spin-orbit coupled crystals with time-reversal symmetry

Jiabin Yu / Chao-Xing Liu

Nature Communications, Vol 11, Iss 1, Pp 1-

2020 Volume 9

Abstract	The linear response and topological electronic properties of a material both depend on the underlying crystal symmetry. Here the authors study how topological phase transitions in two-dimensional materials manifest themselves in the piezoelectric response.
Keywords	Science ; Q
Language	English
Publishing date	2020-05-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Dynamical symmetry indicators for Floquet crystals

Jiabin Yu / Rui-Xing Zhang / Zhi-Da Song

Nature Communications, Vol 12, Iss 1, Pp 1-

2021 Volume 11

Abstract: A general theory for Floquet topology applicable to all crystalline symmetry groups is lacking. Here, the authors propose such a theory for noninteracting Floquet crystals and predict an inversion-protected Floquet higher-order topological phase with ... ...

Abstract	A general theory for Floquet topology applicable to all crystalline symmetry groups is lacking. Here, the authors propose such a theory for noninteracting Floquet crystals and predict an inversion-protected Floquet higher-order topological phase with anomalous chiral hinge modes.
Keywords	Science ; Q
Language	English
Publishing date	2021-10-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The Effect of Built Environment on Older People Leisure-Time Walking and Physical Activity in Different Sex Groups in the City of Ningbo, China

Chuang Gao / Jiabin Yu / Xiaoguang Zhao / Haibao Wang / Zhiyong Liu / Yaodong Gu

Sustainability, Vol 14, Iss 6562, p

2022 Volume 6562

Abstract: The aim of this study was to examine the effect of built environment (BE) elements on older people’s (OP) leisure-time physical activity (LTPA) and leisure-time walking (LTW) level in the city of Ningbo. Older participants numbering 312 were randomly ... ...

Abstract	The aim of this study was to examine the effect of built environment (BE) elements on older people’s (OP) leisure-time physical activity (LTPA) and leisure-time walking (LTW) level in the city of Ningbo. Older participants numbering 312 were randomly recruited using cross-sectional survey in 2019. International Physical Activity Questionnaire-short version (IPAQ-S) and Neighborhood Environment Walkability Scale—abbreviated (NEWS-A)—were used to gather LTPA data and the perceive scores of BE, respectively. Liner regression analysis was performed to investigate the association relationship between the perceived scores of BE and OP’s LTW and LTPA. The study’s results showed that, when not considering different sex groups, OP’s LTW was significantly related with the perceived scores of access to services (AE, p = 0.045), walking/cycling facilities (W/CF, p = 0.007), aesthetics, and land use mix diversity (LUMD, p = 0.04). OP’s LTPA was significantly related with AE ( p = 0.04) and aesthetics ( p < 0.001). The association relationships of BE with LTW and LTPA varied in different sex groups. Three elements (AE, W/CF, and LUMD) and one element (pedestrian/traffic safety and P/TS) of BE were found be related with older male and older female’s LTW, respectively. One element (aesthetics) and two elements (aesthetics, LUMD) of BE were found be related with older male and older female’s LTPA, respectively. The results indicated that the effects of BE on OP’s LTW and the effects of BE on OP’s LTPA were different. The effect also varied in different sex groups. More studies are needed to confirm the effect of BE on OP’s LTW and LTPA in different sex groups to globally enrich the scientific data base.
Keywords	recreation ; sex factors ; aged ; regression analysis ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	380
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A Rice Security Risk Assessment Method Based on the Fusion of Multiple Machine Learning Models

Jiping Xu / Ziyi Wang / Xin Zhang / Jiabin Yu / Xiaoyu Cui / Yan Zhou / Zhiyao Zhao

Agriculture, Vol 12, Iss 815, p

2022 Volume 815

Abstract: With the accelerated digital transformation, food security data is exponentially growing, making it difficult to process and analyze data as the primary challenge for food security risk regulation. The promotion of “big data + food” safety supervision ... ...

Abstract	With the accelerated digital transformation, food security data is exponentially growing, making it difficult to process and analyze data as the primary challenge for food security risk regulation. The promotion of “big data + food” safety supervision can effectively reduce supervision costs and improve the efficiency of risk detection and response. In order to improve the utilization of testing data and achieve rapid risk assessment, this paper proposes a rice security risk assessment method based on the fusion of multiple machine learning models, and conducts experimental validation based on rice hazard detection data from 31 provinces in China excluding Hong Kong, Macao and Taiwan in 2018. The model comparison verifies that the risk assessment model shows better performance than other mainstream machine learning algorithms, and its evaluation accuracy is as high as 99.54%, which verifies that the model proposed in this paper is more stable and accurate, and can provide accurate and efficient decision-making basis for regulatory authorities.
Keywords	food security ; risk assessment ; group decision ; clustering algorithm ; model fusion ; Agriculture (General) ; S1-972
Subject code	006
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The Influence of Social Support on Leisure-Time Physical Activity of the Elderly in the Chinese Village of Fuwen

Jiayi Zhou / Chen Yang / Jiabin Yu / Xiaoguang Zhao / Jinan Wu / Zhiyong Liu / Jianshe Li / Yaodong Gu

Healthcare, Vol 11, Iss 2193, p

2023 Volume 2193

Abstract: The purpose of this study was to examine the associations of social support factors with leisure-time physical activity (LTPA) of older people in Fuwen village. A cross-sectional study included 523 randomly selected elderly people (60+ years) whose LTPA ... ...

Abstract	The purpose of this study was to examine the associations of social support factors with leisure-time physical activity (LTPA) of older people in Fuwen village. A cross-sectional study included 523 randomly selected elderly people (60+ years) whose LTPA levels were determined using the shortened version of the International Physical Activity Questionnaire (IPAQ-S). A modified version of the Physical Activity Social Support Scale (PASSS) was operated to gather perceived scores of the social support factors. A multivariate linear regression was performed to locate associations of perceived scores of social supports with leisure-time walking (LTW) and moderate and vigorous physical activity (MVPA). The results indicated that social support from family was positively and significantly related to LTW and MVPA in both models. The community factor was positively and significantly correlated with MVPA in both models. The sport club factor was related to LTW and MVPA to some extent. The results suggest that social support from family is the most important motivator for older people’s LTW and MVPA in the village of Fuwen. Social support from the community is the motivator for older people’s MVPA. The sport club factor has some effects on older people’s LTW and MVPA as well. More future studies are needed to extend the database of the relationship between social support and rural older people’s physical activity.
Keywords	elderly ; recreational physical activity ; family support ; rural population ; motivators ; China ; Medicine ; R
Subject code	796
Language	English
Publishing date	2023-08-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Comparison Study of Perceived Neighborhood-Built Environment and Elderly Leisure-Time Physical Activity between Hangzhou and Wenzhou, China

Jiabin Yu / Chen Yang / Shen Zhang / Diankai Zhai / Jianshe Li

International Journal of Environmental Research and Public Health, Vol 17, Iss 9284, p

2020 Volume 9284

Abstract: Physical activity and health are of significant importance for the rapid aging population in China. Built environment has been suggested to be associated with elderly physical activity and health. However, the association differences between cities ... ...

Abstract	Physical activity and health are of significant importance for the rapid aging population in China. Built environment has been suggested to be associated with elderly physical activity and health. However, the association differences between cities remain unclear. Perceived built environment scores and elderly leisure-time physical activity (LTPA) of 308 elderly in Hangzhou and 304 elderly in Wenzhou were collected using Neighborhood Environment Walkability Scale and International Physical Activity Questionnaire, respectively. A multivariate linear regression method and T-test were used to analyze of the associations between elderly LTPA and built environment and the differences between the two cities, respectively. The results showed that LTPA was positively associated with walking/cycling facilities and crime safety in both cities. LTPA was positively correlated with residential density, aesthetics, pedestrian/traffic safety in Wenzhou and negatively correlated with access to services in Hangzhou. The perceived scores of aesthetics (2.71 vs. 2.45) and pedestrian/traffic safety (2.11 vs. 1.71) in Hangzhou were significantly higher than those in Wenzhou. The results suggested that built environment elements like higher walking/cycling facilities and crime safety may motivate elderly engaging LTPA in both cities. However, LTPA was affected by different factors in these two cities. In the urban redevelopment, survey conducted in its own city would provide meaningful information and cannot be neglected.
Keywords	built environment elements ; aging over 60 years ; recreational physical activity ; Empirical study ; Medicine ; R
Subject code	380
Language	English
Publishing date	2020-12-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The Effect of the Built Environment on Older Men′s and Women′s Leisure-Time Physical Activity in the Mid-Scale City of Jinhua, China

Jiabin Yu / Chen Yang / Shen Zhang / Diankai Zhai / Aiwen Wang / Jianshe Li

International Journal of Environmental Research and Public Health, Vol 18, Iss 1039, p

2021 Volume 1039

Abstract: Physical activity has been suggested to be beneficial in preventing disease and improving body function in older people. Older people’s leisure-time physical activity (LTPA) is affected by various factors, especially environmental factors. However, the ... ...

Abstract	Physical activity has been suggested to be beneficial in preventing disease and improving body function in older people. Older people’s leisure-time physical activity (LTPA) is affected by various factors, especially environmental factors. However, the differences in the association between older people’s LTPA and the built environment in different sex groups remain unclear. Perceived built environment scores and older people’s LTPA were collected for 240 older people in Jinhua using the Neighborhood Environment Walkability Scale and International Physical Activity Questionnaire, respectively. A linear regression method was used to analyze the associations between older people’s LTPA and the built environment in men, women, and all participants. The results showed that land use mix diversity was associated with LTPA in older people for both sexes. In men, LTPA was also associated with access to services. However, in women, LTPA was associated with residential density, street connectivity, and crime safety. The relationship varied when demographic variables were incorporated into the regression analysis. Those results indicated that a shorter perceived distance from home to destination would motivate older people to engage more in LTPA. Older people’s LTPA was affected by various built environment factors according to different sex groups. Women’s LTPA was generally more sensitive to the built environment. More studies are needed to confirm the association between LTPA in older people and the built environment in men and women in mid- or small-sized Chinese cities in the future.
Keywords	built environment elements ; walkability ; aging over 60 years old ; gender difference ; recreational physical activity ; Medicine ; R
Subject code	390
Language	English
Publishing date	2021-01-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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