Ferrari Gerson Luis de Moraes, Araújo Timóteo, Oliveira Luis Carlos, Matsudo Victor Keihan Rodrigues, Mire Emily, Barreira Tiago, Tudor-Locke Catrine, Katzmarzyk Peter T
Centro de Estudos, Laboratório de Aptidão Física de São Caetano do Sul. R. Heloísa Pamplona 269, Fundação. 09520-320 São Caetano do Sul SP Brasil.
Centro de Atendimento e Apoio ao Adolescente, Departamento de Pediatria da Universidade Federal de São Paulo. São Paulo SP Brasil.
Cien Saude Colet. 2017 Nov;22(11):3689-3698. doi: 10.1590/1413-812320172211.21962015.
The purpose of this study was to determine the relationship between peak cadence indicators and body mass index (BMI) and body fat percentage (BF%)-defined weight status in children. The sample comprised 485 Brazilian children. Minute-by-minute step data from accelerometry were rank ordered for each day to identify the peak 1-minute, 30-minute and 60-minute cadence values. Data were described by BMI-defined and bioelectrical impedance-determined BF% weight status. BMI-defined normal weight children had higher peak 1-minute (115.5 versus 110.6 and 106.6 steps/min), 30-minute (81.0 versus 77.5 and 74.0 steps/min) and 60-minute cadence (67.1 versus 63.4 and 60.7 steps/min) than overweight and obese children (p<.0001), respectively. Defined using %BF, normal weight children had higher peak 1-minute (114.5 versus 106.1 steps/min), 30-minute (80.4 versus 73.1 steps/min) and 60-minute cadence (66.5 versus 59.9 steps/min) than obese children (p<.0001). Similar relationships were observed in boys; however, only peak 1- minute cadence differed significantly across BMI and %BF-defined weight status categories in girls. Peak cadence indicators were negatively associated with BMI and BF% in these schoolchildren and significantly higher among normal weight compared to overweight or obese children.
本研究的目的是确定儿童峰值步频指标与体重指数（BMI）以及以体脂百分比（BF%）定义的体重状况之间的关系。样本包括485名巴西儿童。每天将来自加速度计的每分钟步数数据按顺序排列，以确定1分钟、30分钟和60分钟的峰值步频值。数据按BMI定义的和通过生物电阻抗测定的BF%体重状况进行描述。BMI定义的正常体重儿童的1分钟峰值步频（分别为115.5步/分钟，而超重和肥胖儿童为110.6步/分钟和106.6步/分钟）、30分钟峰值步频（81.0步/分钟，而超重和肥胖儿童为77.5步/分钟和74.0步/分钟）和60分钟峰值步频（67.1步/分钟，而超重和肥胖儿童为63.4步/分钟和60.7步/分钟）均高于超重和肥胖儿童（p<0.0001）。以BF%定义时，正常体重儿童的1分钟峰值步频（114.5步/分钟，而肥胖儿童为106.1步/分钟）、30分钟峰值步频（80.4步/分钟，而肥胖儿童为73.1步/分钟）和60分钟峰值步频（66.5步/分钟，而肥胖儿童为59.9步/分钟）高于肥胖儿童（p<0.0001）。在男孩中观察到类似的关系；然而，在女孩中，仅1分钟峰值步频在BMI和BF%定义的体重状况类别之间存在显著差异。在这些学童中，峰值步频指标与BMI和BF%呈负相关，且正常体重儿童的峰值步频显著高于超重或肥胖儿童。
