Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study
Objectives This study aims to explore the possible association between dietary knowledge and muscle mass in a Chinese population aged 60 years and above.Design Cross-sectional and longitudinal studies.Setting Data from the 2006 and 2011 China Health and Nutrition Survey (CHNS) were used for this stu...
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| Format: | Article |
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BMJ Publishing Group
2023-12-01
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| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/13/12/e075964.full |
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| author | Qiaoling Liu Luonan Wang Yuge Ma Yunjie Geng |
| author_facet | Qiaoling Liu Luonan Wang Yuge Ma Yunjie Geng |
| author_sort | Qiaoling Liu |
| collection | DOAJ |
| description | Objectives This study aims to explore the possible association between dietary knowledge and muscle mass in a Chinese population aged 60 years and above.Design Cross-sectional and longitudinal studies.Setting Data from the 2006 and 2011 China Health and Nutrition Survey (CHNS) were used for this study.Participants A total of 1487 Chinese participants (44.38% males) aged 60 and above in the 2006 survey were included in the cross-sectional study. From the same study population, a total of 1023 participants (46.82% males) with normal muscle mass on the interview date of 2006 were included in the longitudinal study.Outcome measures Dietary knowledge was accessed by a validated CHNS questionnaire. Appendicular skeletal muscle mass was calculated using a validated anthropometric equation derived from a representative Chinese population. Based on the 2021 Chinese consensus on sarcopenia, the appendicular skeletal muscle mass was categorised as ‘normal’ or ‘low’ using sex-specific cut-off values.Results The prevalence of low muscle mass in the study population was 31.20%, with a higher prevalence in females (34.22%). People with low muscle mass have a significantly lower dietary knowledge score (mean difference: −1.74, 95% CI −2.20 to −1.29). In the cross-sectional analysis, one score higher in dietary knowledge score was associated with a 4% lower odds of low muscle mass (OR=0.96, 95% CI 0.93 to 0.99). Compared with people in the lowest quartile of dietary knowledge, people in the highest quartile have a 44% lower odds of low muscle mass (OR=0.56, 95% CI 0.35 to 0.91). In the longitudinal analysis, no significant association was found between dietary knowledge and low muscle mass, yet the upper 95% CI was close to one (HR=0.97, 95% CI 0.93 to 1.01).Conclusions Sufficient dietary knowledge may play a protective role in maintaining normal muscle mass in Chinese adults aged 60 or above. |
| format | Article |
| id | doaj-art-1f3e1dd2f0064a6dae70b8d3e39bffe4 |
| institution | Kabale University |
| issn | 2044-6055 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | BMJ Publishing Group |
| record_format | Article |
| series | BMJ Open |
| spelling | doaj-art-1f3e1dd2f0064a6dae70b8d3e39bffe42025-08-20T03:52:28ZengBMJ Publishing GroupBMJ Open2044-60552023-12-01131210.1136/bmjopen-2023-075964Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal studyQiaoling Liu0Luonan Wang1Yuge Ma2Yunjie Geng3School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow, UKFaculty of Business, Economics and Law, The University of Queensland, Saint Lucia, Queensland, AustraliaThe First School of Clinical Medicine, Hainan Medical University, Haikou, Hainan, ChinaResearch Institute of Statistical Sciences, National Bureau of Statistics of China, Beijing, ChinaObjectives This study aims to explore the possible association between dietary knowledge and muscle mass in a Chinese population aged 60 years and above.Design Cross-sectional and longitudinal studies.Setting Data from the 2006 and 2011 China Health and Nutrition Survey (CHNS) were used for this study.Participants A total of 1487 Chinese participants (44.38% males) aged 60 and above in the 2006 survey were included in the cross-sectional study. From the same study population, a total of 1023 participants (46.82% males) with normal muscle mass on the interview date of 2006 were included in the longitudinal study.Outcome measures Dietary knowledge was accessed by a validated CHNS questionnaire. Appendicular skeletal muscle mass was calculated using a validated anthropometric equation derived from a representative Chinese population. Based on the 2021 Chinese consensus on sarcopenia, the appendicular skeletal muscle mass was categorised as ‘normal’ or ‘low’ using sex-specific cut-off values.Results The prevalence of low muscle mass in the study population was 31.20%, with a higher prevalence in females (34.22%). People with low muscle mass have a significantly lower dietary knowledge score (mean difference: −1.74, 95% CI −2.20 to −1.29). In the cross-sectional analysis, one score higher in dietary knowledge score was associated with a 4% lower odds of low muscle mass (OR=0.96, 95% CI 0.93 to 0.99). Compared with people in the lowest quartile of dietary knowledge, people in the highest quartile have a 44% lower odds of low muscle mass (OR=0.56, 95% CI 0.35 to 0.91). In the longitudinal analysis, no significant association was found between dietary knowledge and low muscle mass, yet the upper 95% CI was close to one (HR=0.97, 95% CI 0.93 to 1.01).Conclusions Sufficient dietary knowledge may play a protective role in maintaining normal muscle mass in Chinese adults aged 60 or above.https://bmjopen.bmj.com/content/13/12/e075964.full |
| spellingShingle | Qiaoling Liu Luonan Wang Yuge Ma Yunjie Geng Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study BMJ Open |
| title | Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study |
| title_full | Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study |
| title_fullStr | Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study |
| title_full_unstemmed | Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study |
| title_short | Association between dietary knowledge and muscle mass in Chinese older adults: a cross-sectional and longitudinal study |
| title_sort | association between dietary knowledge and muscle mass in chinese older adults a cross sectional and longitudinal study |
| url | https://bmjopen.bmj.com/content/13/12/e075964.full |
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