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首页> 外文期刊>PLoS One >Effects of isotemporal substitution of sedentary behavior with light-intensity or moderate-to-vigorous physical activity on cardiometabolic markers in male adolescents
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Effects of isotemporal substitution of sedentary behavior with light-intensity or moderate-to-vigorous physical activity on cardiometabolic markers in male adolescents

机译：肾小度特性与雄性青少年心肌标记物的光强度或中等至剧烈的身体活动的异常替代

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Increasing prevalence of sedentary behavior (SB) combined with low levels of physical activity (PA) in children and adolescents has become a growing public health concern. Therefore, this study aimed to identify the daily behavioral pattern of adolescents and examine the isotemporal substitution effects of SB with light-intensity PA (LIPA) or moderate-to-vigorous PA (MVPA) on cardiometabolic markers. In this cross-sectional study, the daily behavioral pattern of Brazilian male adolescents was objectively measured for 7 days. Vector magnitude activity counts were used to estimate SB, LIPA, and MVPA with cut-points specifically validated for youth. The isotemporal substitution model was used to assess the effects of replacing different SB bouts (5, 10, 30, and 60 min) with LIPA or MVPA on cardiometabolic markers [body mass index, waist circumference, body fat percentage (BF%), total cholesterol, high-density lipoprotein cholesterol (HDL-C), non-HDL-C, low-density lipoprotein cholesterol, triglyceride (TG), glucose, insulin, homeostatic model assessment of insulin resistance (HOMA2-IR), insulin sensitivity (HOMA2-S), beta cell function (HOMA2-β), systolic-blood pressure (SBP), diastolic-blood pressure, and cardiometabolic risk score]. Male adolescents (n = 84; age, 16.7 ± 0.9 years) wore the GT3X+ for 6.7 ± 0.6 days, during 15.2 ± 2.3 h, and spent 72.9% of the time in SB, 17.3% in LIPA, and 9.8% in MVPA. SB replacement with LIPA was associated with increased HDL-C, TG, HOMA2-IR, and HOMA2-S and decreased SBP. In contrast, SB replacement with MVPA was associated with decreased BF%. Therefore, our findings suggest that replacing SB with LIPA showed positive results on HDL-C, HOMA2-S and SBP, while replacing SB with MVPA was associated with only one obesity indicator (BF%). Moreover, participants met the daily MVPA recommendations, but they still had a daily behavioral pattern with high SB. In this context, LIPAs can be considered an effective alternative to reduce SB and improve the health indicators of this population.
机译：增加久坐行为（SB）的患病率（SB）与儿童和青少年的低水平的身体活动（PA）相结合，已成为越来越大的公共卫生问题。因此，本研究旨在鉴定青少年的日常行为模式，并在心细镜标记上检查Sb的同态取代效应或中度剧性PA（MVPA）。在这种横断面研究中，巴西雄性青少年的日常行为模式客观地测量了7天。矢量幅度活性计数用于估计SB，LIPA和MVPA，与青少年明确验证的切割点。使用同型替代模型来评估用脂素标记物（5,10,30,30和60分钟）对心肌标记物上的脂肪酸或MVPA的影响[体重指数，腰围，体脂百分比（BF％），总计胆固醇，高密度脂蛋白胆固醇（HDL-C），非HDL-C，低密度脂蛋白胆固醇，甘油三酯（Tg），葡萄糖，胰岛素，稳态模型评估胰岛素抵抗（HOMA2-IR），胰岛素敏感性（HOMA2 -S），β细胞功能（HOMA2-β），收缩压（SBP），舒张压血压和心细素风险得分]。雄性青少年（n = 84;年龄，16.7±0.9岁）穿过GT3x + 6.7±0.6天，在15.2±2.3小时内，在SB的72.9％的时间内花了72.9％，在LIPA的17.3％，MVPA中为9.8％。用LIPA的Sb替代与增加的HDL-C，Tg，HOMA2-IR和HOMA2-S和SBP降低有关。相比之下，用MVPA的Sb替代与Bf％降低有关。因此，我们的研究结果表明，用LIPA替代SB显示HDL-C，HOMA2-S和SBP的阳性结果，同时用MVPA替换SB，只有一种肥胖指标（BF％）。此外，参与者符合日常的MVPA建议，但它们仍然仍有每日行为模式，具有高的SB。在这种情况下，利润斯可以被认为是减少SB的有效替代方案，并改善该人群的健康指标。

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