医疗环境中白种人和南亚人群身体活动水平的差异：横断面研究中测量类型的影响
Differences in levels of physical activity between White and South Asian populations within a healthcare setting: impact of measurement type in a cross-sectional study.
作者信息
Yates Thomas, Henson Joe, Edwardson Charlotte, Bodicoat Danielle H, Davies Melanie J, Khunti Kamlesh
机构信息
Diabetes Research Centre, University of Leicester, Leicester, UK NIHR Leicester-Loughborough Diet, Lifestyle and Physical Activity Biomedical Research Unit, Leicester, UK.
Diabetes Research Centre, University of Leicester, Leicester, UK NIHR Collaboration for Leadership in Applied Health Research and Care East Midlands, Leicester, UK.
出版信息
BMJ Open. 2015 Jul 23;5(7):e006181. doi: 10.1136/bmjopen-2014-006181.
OBJECTIVE
We investigate differences between White and South Asian (SA) populations in levels of objectively measured and self-reported physical activity.
DESIGN
Cross-sectional study.
SETTING
Leicestershire, UK, 2010-2011.
PARTICIPANTS
Baseline data were pooled from two diabetes prevention trials that recruited a total of 4282 participants from primary care with a high risk score for type 2 diabetes. For this study, 2843 White (age=64±8, female=37%) and 243 SA (age=58±9, female=34%) participants had complete physical activity data and were included in the analysis.
OUTCOME MEASURES
Moderate-intensity to vigorous-intensity physical activity (MVPA) and walking activity were measured using the International Physical Activity Questionnaire (IPAQ), and a combination of piezoelectric pedometer (NL-800) and accelerometer (Actigraph GT3X) were used to objectively measure physical activity.
RESULTS
Compared to White participants, SA participants self-reported less MVPA (30 vs 51 min/day; p<0.001) and walking activity (11 vs 17 min/day; P=0.001). However, there was no difference in objectively measured ambulatory activity (5992 steps/day vs 6157 steps/day; p=0.75) or in time spent in MVPA (18.0 vs 21.5 min/day; p=0.23). Results were largely unaffected when adjusted for age, sex and social deprivation. Compared to accelerometer data, White participants overestimated their time in MVPA by 51 min/day and SA participants by 21 min/day.
CONCLUSIONS
SA and White groups undertook similar levels of physical activity when measured objectively despite self-reported estimates being around 40% lower in the SA group. This emphasises the limitations of comparing self-reported lifestyle measures across different populations and ethnic groups.
TRIAL REGISTRATION NUMBER
Reports baseline data from: Walking Away from Type 2 Diabetes (ISRCTN31392913) and Let's Prevent Diabetes (NCT00677937).
目的
我们调查白种人和南亚人群在客观测量及自我报告的身体活动水平上的差异。
设计
横断面研究。
地点
英国莱斯特郡，2010 - 2011年。
参与者
基线数据来自两项糖尿病预防试验，共从初级保健机构招募了4282名2型糖尿病风险评分高的参与者。本研究纳入了2843名白种人（年龄 = 64 ± 8岁，女性占37%）和243名南亚人（年龄 = 58 ± 9岁，女性占34%），他们有完整的身体活动数据并被纳入分析。
观察指标
使用国际身体活动问卷（IPAQ）测量中等强度至剧烈强度身体活动（MVPA）和步行活动，并结合压电计步器（NL - 800）和加速度计（Actigraph GT3X）客观测量身体活动。
结果
与白种人参与者相比，南亚参与者自我报告的MVPA较少（30分钟/天对51分钟/天；p < 0.001），步行活动也较少（11分钟/天对17分钟/天；P = 0.001）。然而，客观测量的日常活动步数（5992步/天对6157步/天；p = 0.75）或MVPA的时间（18.0分钟/天对21.5分钟/天；p = 0.23）没有差异。在对年龄、性别和社会剥夺情况进行调整后，结果基本不受影响。与加速度计数据相比，白种人参与者高估了他们在MVPA中的时间，每天高估51分钟，南亚参与者每天高估21分钟。
结论
尽管南亚人群自我报告的估计值比白种人群低约40%，但在客观测量时，南亚人和白种人进行的身体活动水平相似。这强调了在不同人群和种族之间比较自我报告的生活方式指标的局限性。
试验注册号
报告来自“远离2型糖尿病”（ISRCTN31392913）和“让我们预防糖尿病”（NCT00677937）的基线数据。
Zotero 插件