CADENCE-KIDS: Cadence and Intensity in Children and Adolescents

CADENCE-KIDS：儿童和青少年的节奏和强度

• 批准号: 8687701
• 负责人: William Johnson
• 金额: $ 21.58万
• 依托单位: LSU PENNINGTON BIOMEDICAL RESEARCH CTR
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2016-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8687701
• 关键词: 10 year old; 15 year old; 20 year old; Adolescent; Adolescent Behavior; Adult; Age; Age-Years; Biological Neural Networks; Biomedical Research; Child; Classification; Clinical; Communities; Complex; Data; Development; Devices; Digit structure; Equation; Exercise stress test; Exploratory/Developmental Grant; Frequencies; Frustration; Future; Gait; Generic Drugs; Guidelines; Health Benefit; Indirect Calorimetry; Individual; Investigation; Laboratories; Length; Life; Life Style; Link; Measurement; Measures; Memory; Metabolic; Methods; Metric; Monitor; Movement; Output; Oxygen; Pattern; Pattern Recognition; Physical activity; Positioning Attribute; Public Health; Recommendation; Recruitment Activity; Research; Research Design; Running; Schools; Science; Signal Transduction; Source; Speed; Statistical Models; Techniques; Technology; Testing; Time; Touch sensation; Translating; Variant; Walking; base; boys; design; experience; girls; heuristics; improved; instrument; instrumentation; interest; markov model; novel; programs; public health relevance; real world application; sex; trend; uptake; user-friendly

DESCRIPTION (provided by applicant): Cadence-Kids is an R21 exploratory/developmental study designed to 1) measure and link cadence (steps/minute) to intensity cut points across age in 6-20 year olds, and 2) describe children's and adolescents' behavior in free-living using these cut points. Cadence is just one of the temporal-spatial parameters of gait. Cadence multiplied by stride length equals speed. Capture and expression of physical activity in terms of cadence represents an overlooked opportunity to examine free-living patterns of ambulatory intensity. To achieve our primary aim, we will identify and recruit 10 children and adolescents (5 boys, 5 girls) from each age-year between 6-20 years (a span of 10 age-years for a total of 150 children and adolescents) to a lab- based study of cadence (assessed on a treadmill) followed by a week-long free-living study of habitual physical activity. Under laboratory conditions we will calibrate different treadmill cadences with indirect calorimetry. We will subsequently monitor these same individuals' habitual minute-by-minute cadence for one week. We hypothesize that children's intensity will increase as cadence increases in a linear or nonlinear fashion such that we will be able to develop novel statistical models for predicting markers (cut points) of intensity from cadence. We further hypothesize that free-living estimates of children's time in at least moderate intensity activity will be higher using sex and age-calibrated cadence results compared to that obtained from more generic activity count cut points. We are uniquely positioned at the Pennington Biomedical Research Center to successfully conduct Cadence Kids as designed in a 2-year time period. We have established recruiting methods, excellent connections with schools and the community, and are fully experienced in exercise testing and accelerometry. The information derived from this R21 exploratory/developmental study will inform future R01 investigations related to cadence as an indicator of intensity in determining healthful levels of children's free-living physical activity. If successful, we expect that cadence cut points will be used both to assess ambulatory intensity, but also to inform program design focused on increasing not only the volume of physical activity (e.g., steps/day) but also its intensity (e.g., cadence) in user-friendly metrics.

描述(由申请人提供)：Cadence-Kids是一项R21探索性/发展性研究，旨在1)测量并将6-20岁儿童的步数(步数/分钟)与强度切点联系起来，以及2)使用这些切点描述儿童和青少年在自由生活中的行为。步态只是步态的时空参数之一。节奏乘以步幅等于速度。用节奏捕捉和表达身体活动，代表了一个被忽视的机会，可以检验自由生活的活动强度模式。为了实现我们的主要目标，我们将确定并招募10名儿童和青少年(5名男孩，5名女孩) 从6-20岁之间的每个年龄段(总共150名儿童和青少年的年龄跨度为10岁)到基于实验室的节奏研究(在跑步机上进行评估)，然后进行为期一周的习惯性体力活动自由生活研究。在实验室条件下，我们将校准 间接量热法测定不同跑台节奏。我们随后将在一周内监测这些人习惯的分分秒秒的节奏。我们假设儿童的强度会随着节奏以线性或非线性的方式增加而增加，这样我们就能够开发出新的统计模型来根据节奏预测强度的标记(切点)。我们进一步假设，与从更一般的活动计数分界点获得的结果相比，使用性别和年龄校准的节奏结果对儿童至少中等强度活动的自由生活时间的估计将更高。我们在彭宁顿生物医学研究中心具有得天独厚的优势，可以在两年的时间内成功开展Cadence Kids。我们已经建立了招募方法，与学校和社区建立了良好的关系，并在运动测试和加速测量方面拥有充分的经验。从这项R21探索性/发育研究中获得的信息将为未来的R01研究提供信息，作为确定儿童自由生活身体活动健康水平的强度指标。如果成功，我们预计节奏切割点将被用于评估步行强度，并为计划设计提供信息，重点不仅是增加体力活动的量(例如，每天的步数)，而且还包括其强度(例如， Cadence)在用户友好的指标中。

项目成果

Cadence (steps/min) and intensity during ambulation in 6-20 year olds: the CADENCE-kids study.

• DOI: 10.1186/s12966-018-0651-y
• 发表时间: 2018-02-26
• 期刊: The international journal of behavioral nutrition and physical activity
• 作者: Tudor-Locke C;Schuna JM Jr;Han H;Aguiar EJ;Larrivee S;Hsia DS;Ducharme SW;Barreira TV;Johnson WD
• 通讯作者: Johnson WD

Youth Energy Expenditure During Common Free-Living Activities and Treadmill Walking.

在常见的自由生活活动和跑步机步行中，青年能源支出。

• DOI: 10.1123/jpah.2015-0728
• 发表时间: 2016-06
• 期刊: Journal of physical activity & health
• 影响因子: 3.1
• 作者: Schuna JM Jr;Barreria TV;Hsia DS;Johnson WD;Tudor-Locke C
• 通讯作者: Tudor-Locke C