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The Growing Well Study (GWS)

2026年7月6日 更新者：Diane Threapleton、University of Leeds

Growing Well Study: The Role of Portion Size, Plant-based and Commercial Foods on Young Child Growth

What are the study aims? To understand more about eating habits and age-appropriate food/drink portion sizes of children aged 6 months-5 years old, and how this affects their growth and dental health.

Why is this research important? Healthy diets in early years are important for growth and development. However, clear guidance for parents on what and how much children should eat is missing due to lack of up-to-date information.

What will the investigators do? Information will be collected at two time points. At baseline, parents/guardians of children aged 6 months-4 years from Leeds, Doncaster and East London will complete questionnaires about their child's sociodemographic information and food intake. They will be asked to record what their child eats for three separate one-day periods using an online system called 'myfood24'. Parents will also attend one in-person session for measuring their child's length/height, weight, and waist circumference.

At follow-up one year later, parents/guardians will complete surveys again, with another in-person session to look at growth and assess dental health.

What do the investigators expect to achieve and what happens next? They want to understand how growth and dental health are influenced by nutrient intakes, dietary patterns, and portion sizes for key food groups. They will also identify how much of different foods children should be eating, and whether commercial foods and sweet drinks are relevant.

They will explore which dietary factors can support healthier children; and how low intakes of key foods or vitamins/minerals in vulnerable groups could be redressed. The study will provide unique information, allowing for development of recommendations for parents and policy-makers on age-appropriate portions, on achieving good nutrition in UK children and within special dietary groups, and on dietary considerations in caring for children's teeth.

研究概览

地位

招聘中

条件

干预/治疗

详细说明

Research question

The investigators will answer questions posed by the recent Scientific Advisory Committee on Nutrition (SACN) report:

  • What are age-appropriate food and drink portion sizes in relation to growth and dental health?
  • What are the short-term effects (12 months) on growth and dental health of commercial foods for children; vegetarian/vegan/dairy-free dietary patterns?
  • What is the impact on growth and dental health of macro- and micro-nutrient intakes; fruit juices/free sugars; formula milks for 12m+; sweeteners?

Background In the UK, little contemporary data exists on diet in young children but worrying trends in preschool overweight and dental health are reported. Current young child diets do not meet dietary recommendations and evidence-driven age-appropriate portion size recommendations are missing. Further research into the impact of plant-based diets, the use of commercial foods, and toddler milks is also recommended by SACN.

Aims and Objectives To provide new evidence on diet in children aged 6 months - 5 years, linked to optimum growth and dental health. Quantifying age-appropriate portion sizes for different foods and drinks.

  • Collect data on child dietary intake, portion sizes.
  • Collect data on parent and child attributes, including child anthropometrics and dental health.
  • Evaluate food and nutrient intake in relation to i) growth over 12 months, ii) child and parent characteristics, including ethnic diversity, deprivation and iii) dental health.
  • Make recommendations for nutrition and age-appropriate portions.

Methods 1,890 parents of young children (6 months - 4 years) will be recruited through a combination of community outreach and hospital-based recruitment. This will include participants from the Born and Bred in (BaBi) Network birth cohorts in Leeds, Doncaster, and East London, as well as from the Generation Study. Recruitment will include approximately equal distribution in each year bracket, 20% non-white, 20% from deprived locations, and 15% vegetarian/vegan/non-dairy diet. Protocols are in place to ensure recruitment targets are met. Protocols, consent forms, and questionnaires have been co-designed with our Parent Advisory Group.

Baseline data will be collected using i) online survey, ii) fieldworker-measured height/length, weight, abdominal circumference, iii) 3 x 24h measures of diet spanning several months, and may possibly include iv) saliva collection in a subsample (if funding is obtained). Follow-up data collected after 12 months will repeat baseline measures and additionally include a dental assessment.

Cross-sectional and longitudinal analysis will explore how growth and dental health are influenced by nutrient intakes, diet pattern, and food portion sizes. Age/gender appropriate portion sizes for key food groups will be characterised with linear mixed-effects modelling for specific foods/food groups in relation to the child's position on the growth chart centiles.

Anticipated Impact and Dissemination Knowledge of associations between food and nutrient intakes and growth/dental health and of suboptimal intakes in vegan/vegetarian/dairy-free or vulnerable groups will enable evidence-based guidelines on age-appropriate portion sizes and optimal diet composition.

Guideline promotion to key stakeholders and visual feedback to participants will support intake of age-appropriate portions and healthier diets. Ultimately resulting in healthier children, with better dental health. Guidelines will also highlight social inequalities, indicating specific actions to redress imbalances

研究类型

观察性的

注册 (估计的)

1890

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

研究联系人备份

  • 姓名：Sofia Barragan Vazquez del Mercado, PhD
  • 电话号码：+441133435530
  • 邮箱：s.barragan@leeds.ac.uk

学习地点

  • 英国
    • West Yorkshire
      • Doncaster、West Yorkshire、英国、LS6 2EF
        • 招聘中
        • Doncaster and Bassetlaw Teaching Hospitals NHS Foundation Trust
        • 接触：
        • 接触：
      • Doncaster、West Yorkshire、英国
        • 招聘中
        • Community settings across Doncaster
        • 接触：
        • 接触：
      • Leeds、West Yorkshire、英国、LS6 2EF
        • 招聘中
        • Leeds Teaching Hospitals NHS Trust
        • 接触：
        • 接触：
      • Leeds、West Yorkshire、英国
        • 招聘中
        • Community settings across Leeds
        • 接触：
        • 接触：
      • London、West Yorkshire、英国、LS6 2EF
        • 招聘中
        • Barts Health NHS Trust
        • 接触：
        • 接触：
      • London、West Yorkshire、英国、LS6 2EF
        • 招聘中
        • Community settings across East London
        • 接触：
        • 接触：

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 孩子

接受健康志愿者

是的

取样方法

非概率样本

研究人群

Children aged between 6 months and 5 years living in Leeds, Doncaster and East London.

描述

Inclusion Criteria:

  • Children aged 6 months-4 years along with their parents or guardians who reside in or near one of the three study locations and planned fieldwork sites: Leeds, Doncaster, or East London. For East London, eligibility includes individuals living in or near Tower Hamlets or an adjacent borough
  • All participants are eligible regardless of background, language, educational ability, or literacy level.

Exclusion Criteria:

  • Plan to move outside of the study area within the next 12 months
  • Children not living with the consenting parent/guardian for any part of the week or not living with the consenting parent/guardian at the time of data collection (e.g. in care, hospital, or living wholly with another family member).
  • Children with significant oral feeding difficulties (e.g. tube-feeding or developmental delays)
  • Children that have been diagnosed with a long-term condition that affects their growth or development (e.g. hormonal or genetic conditions)
  • Children from subgroups where quotas have been filled will be excluded to maintain balanced representation across all study groups (e.g., age 3, non-deprived locations).

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Weight-for-height/length Z scores
大体时间：Baseline (2026) and follow-up 12 months later
Weight (kg) and length or height (cm) are combined to this indicator. A standardized measure of body weight relative to height or length and sex. Following international reccomendations, length is used for children <2 years and height for those >=2 years. Scores typically range from -5 to +5 Z scores, with higher scores indicating greater weight relative to height/length.
Baseline (2026) and follow-up 12 months later
Dental caries
大体时间：Follow-up only (2027)
Prevalence following the National Dental Epidemiology Programme methodology, including a visual-only examination by trained and calibrated dental examiners, using the dentinal cavitation (d₃mft) as diagnostic threshold.
Follow-up only (2027)

次要结果测量

结果测量
措施说明
大体时间
Dental health
大体时间：Follow-up only (2027)
Presence of plaque, sepsis and enamel defects associated with dentinal cavitation.
Follow-up only (2027)
Length/Height-for-Age Z-score
大体时间：Baseline (2026) and 12-month follow up
Length or height (cm) relative to age are used for this indicator. Length/height-for-age calculated using UK WHO growth standards and expressed as a Z-score (range -6 to +6). Higher Z-scores indicate greater attained length/height relative to age. Following international standards, if the child is <2years indicator will use length, and if >=2 years height.
Baseline (2026) and 12-month follow up
Weight-for-Age Z-score
大体时间：Baseline (2026) and 12-month follow up
Weight (kg) in relation to age are used for this indicator. Weight-for-age calculated using UK WHO growth standards and expressed as a Z-score. Values within the range of -6 and +5 Z scores. Higher scores indicate greater body weight relative to age.
Baseline (2026) and 12-month follow up
Body Mass Index for-Age Z-score
大体时间：Baseline (2026) and 12 month follow-up
Body mass index (BMI) calculated as weight (kg)/height or length (m²), standardized for age using UK WHO growth standards and expressed as a Z-score. Values range between -5 and + 5 Z scores. Higher scores indicate higher BMI relative to age.
Baseline (2026) and 12 month follow-up
Waist circumference
大体时间：Baseline (2026) and 12 month follow-up
Waist circumference at the navel level measured using standard anthropometric procedures. Unit of measure are cm, no predetermined minimum or maximum values. Higher values indicate larger waist circumference.
Baseline (2026) and 12 month follow-up

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

University of Leeds

合作者

The Leeds Teaching Hospitals NHS Trust
Barts & The London NHS Trust
Queen Mary University of London
Doncaster And Bassetlaw Hospitals NHS Foundation Trust
National Centre for Social Research, London, UK

调查人员

  • 首席研究员：Janet E Cade, PhD、University of Leeds
  • 首席研究员：Diane E Threapleton, PhD、University of Leeds

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

有用的网址

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年1月5日

初级完成 (估计的)

2027年9月1日

研究完成 (估计的)

2027年10月1日

研究注册日期

首次提交

2026年6月23日

首先提交符合 QC 标准的

2026年7月6日

首次发布 (实际的)

2026年7月13日

研究记录更新

最后更新发布 (实际的)

2026年7月13日

上次提交的符合 QC 标准的更新

2026年7月6日

最后验证

2026年7月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • 2025-NCT43
  • NIHR207073 (其他赠款/资助编号：National Institute for Health and Care Research (NIHR))
  • 347332 (其他标识符：IRAS)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

未定

IPD 计划说明

Where appropriate, de-identified datasets may be shared with external collaborators in response to reasonable, ethically approved data sharing requests. In such cases, formal data sharing agreements will be required.

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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