V̇O₂peak estimation in people with overweight and obesity before and after a 14-week lifestyle intervention.

IF 4.2 2区医学 Q1 ENDOCRINOLOGY & METABOLISM

International Journal of Obesity Pub Date : 2025-01-20 DOI:10.1038/s41366-025-01713-9

Mikkel Thunestvedt Hansen, Karina Husted, Johanne Louise Modvig, Kristine Kjær Lange, Cecilie Moe Weinreich, Cathrine Tranberg, Tue Rømer, Arthur Ingersen, Flemming Dela, Jørn Wulff Helge

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Abstract

Purpose: This study aimed to investigate the validity and applicability of a non-exercise estimation of cardiorespiratory fitness using resting seismocardiography (SCG eV̇O₂peak) in people with overweight and obesity before and after a 14-week lifestyle intervention.

Methods: The study was carried out at a Folk high school that offers 14-week courses on lifestyle changes where participants live at the school and voluntarily participate in daily lectures and activities. Sixty-seven men and women with age and body mass index between 18 and 70 years and 25-50 kg·m^-2 were tested at baseline, and 52 had a follow-up test after 14 weeks. Testing included the determination of anthropometric variables, an SCG eV̇O₂peak at supine rest, and a gold standard V̇O₂peak test on a cycle ergometer until voluntary exhaustion.

Results: Agreement analysis for V̇O₂peak at baseline (n = 67, SCG eV̇O₂peak: 26.9 ± 1.9 ml·min^-1·kg^-1, V̇O₂peak: 26.6 ± 1.6 ml·min^-1·kg^-1, mean ± 95% confidence interval) showed a bias of 0.3 ± 1.0 ml·min^-1·kg^-1 with 95% limits of agreement (LoA) ranging ± 9.8 ml·min^-1·kg^-1. A Pearson's correlation of r = 0.78 (p < 0.0001) and a standard error of estimate (SEE) of 5.0 ml·min^-1·kg^-1 were found between methods. At follow-up (n = 52), body mass was reduced by 6.6 ± 1.4 kg (p < 0.0001). V̇O₂peak increased by 3.3 ± 0.9 ml·min^-1·kg^-1 and 175 ± 78 ml·min^-1 and SCG eV̇O₂peak by 2.6 ± 0.8 ml·min^-1·kg^-1 and 93 ± 76 ml·min^-1 (two-way ANOVA repeated measure: intervention p < 0.0001, method p = 0.939 and interaction p = 0.125, relative V̇O₂peak). A Pearson's correlation of r = 0.37 (p < 0.05) was found between changes in relative V̇O₂peak but not for absolute V̇O₂peak r = 0.10 (p = 0.402).

Conclusions: The SCG method is accurate for estimating V̇O₂peak and appropriate for detecting group changes in both relative and absolute V̇O₂peak following a lifestyle intervention in people with overweight and obesity. Furthermore, the method can detect individual changes in V̇O₂peak but not independently of body mass changes. Yet, the applicability is still limited by the relatively large variation in LoA and SEE.

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超重和肥胖人群在14周生活方式干预前后的V²o峰值估计。

目的：本研究旨在探讨在超重和肥胖人群进行14周生活方式干预前后，非运动状态下静息心电图（scgevo2peak）评估心肺健康的有效性和适用性。方法：研究在一所提供14周生活方式改变课程的Folk高中进行，参与者住在学校，自愿参加日常讲座和活动。67名年龄和体重指数在18 ~ 70岁，25 ~ 50 kg·m-2的男性和女性在基线时进行检测，52名在14周后进行随访检测。测试包括人体测量变量的测定，仰卧休息时的SCG eV o 2峰值，以及在循环测力仪上的金标准V o 2峰值测试，直到自愿精疲力竭。结果：基线（n = 67， SCG eV / o2峰：26.9±1.9 ml·min-1·kg-1， V / o2峰：26.6±1.6 ml·min-1·kg-1，平均值±95%置信区间）的一致性分析显示偏差为0.3±1.0 ml·min-1·kg-1, 95%一致性限（LoA）为±9.8 ml·min-1·kg-1。两种方法之间的Pearson相关性为r = 0.78 （p -1·kg-1）。在随访时（n = 52），体重减少6.6±1.4 kg (p 2峰增加3.3±0.9 ml·min-1·kg-1和175±78 ml·min-1)， SCG eV o 2峰增加2.6±0.8 ml·min-1·kg-1和93±76 ml·min-1（双向方差分析重复测量：干预p 2峰）。皮尔逊相关r = 0.37 (p = 2peak)，但绝对vo_2峰值r = 0.10 （p = 0.402）不相关。结论：SCG法可准确估算出超重和肥胖人群生活方式干预后的相对和绝对V值，适用于检测组间的变化。此外，该方法可以检测个体的V²o2峰值变化，但不能独立于体重变化。然而，由于LoA和SEE变化较大，其适用性仍然受到限制。

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来源期刊

International Journal of Obesity 医学-内分泌学与代谢

CiteScore

10.00

自引率

2.00%

发文量

221

审稿时长

3 months

期刊介绍： The International Journal of Obesity is a multi-disciplinary forum for research describing basic, clinical and applied studies in biochemistry, physiology, genetics and nutrition, molecular, metabolic, psychological and epidemiological aspects of obesity and related disorders. We publish a range of content types including original research articles, technical reports, reviews, correspondence and brief communications that elaborate on significant advances in the field and cover topical issues.