Children should engage in 1 hr/day of moderate-to-vigorous physical activity (MVPA) that results in increased heart rates (HRs) (CDC, 2022). However, precise individualized HR criteria for MVPA are not provided, and it is unclear whether observed behaviors classified as MVPA are associated with elevated HRs indicative of MVPA. The current study replicated an individualized heart rate assessment (IHRA) for identifying MVPA HR zones in children (Van Camp et al., 2021). We then evaluated whether engaging in vigorous PA (VPA) for half of the session resulted in HRs indicative of VPA for at least half of the session when children engaged in running for 30, 60, 90, and 120 s bouts. Individual differences were observed during the IHRA. During the bout analysis, HRs were not within VPA zones for 50% of the session. However, HRs were within moderate PA (MPA) zones, with 30 s bouts producing the highest percentages of MPA.

中文翻译：

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儿童剧烈体力活动个体心率评估及回合分析

儿童应每天进行 1 小时的中度至剧烈体力活动 (MVPA)，以提高心率 (HR) (CDC, 2022)。然而，没有提供精确的 MVPA 个体化 HR 标准，并且尚不清楚观察到的归类为 MVPA 的行为是否与指示 MVPA 的 HR 升高有关。目前的研究复制了用于识别儿童 MVPA HR 区域的个体化心率评估 (IHRA)（Van Camp 等人，2021 年）。然后，我们评估了当孩子们进行 30、60、90 和 120 秒的比赛时，在一半的会话中进行剧烈的 PA (VPA) 是否会导致 HR 在至少一半的会话中指示 VPA。在 IHRA 期间观察到个体差异。在回合分析期间，HR 有 50% 的时间不在 VPA 区域内。然而，