Six‐minute walking test and the assessment of cardiorespiratory responses during weight‐loss programmes in obese children

Elloumi, Mohamed; Makni, Emna; Ounis, Omar Ben; Moalla, Wassim; Zbidi, Abdelkarim; Zaoueli, Monia; Lac, G.; Tabka, Zouhaïr

doi:10.1002/pri.470

Cited by 38 publications

(94 citation statements)

References 29 publications

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“…Accordingly, the distance walked in 6 min was the highest predictor of the FATmax with a correlation coefficient equal to 0.88 and 0.81 for boys and girls, respectively. This knowledge confirms our previous results on a smaller sample of obese children 15 and will impact favorably on the utility of the 6MWT. Specifically, our study sought to examine whether results of the 6MWT might predict the FATmax in obese children.…”

Section: Discussionsupporting

confidence: 91%

“…The crude power and/or HR at which fat oxidation reaches its maximum is the most useful information if one aims at undertaking a targeted training procedure. 6,10,15 These data strengthen the accuracy and usefulness of the 6MWT, and extend its application for obese patients. With this new knowledge, investigators will be able to target exercise intensity at LIPOXmax without performing indirect calorimetry, just from a field test.…”

Section: Discussionsupporting

confidence: 60%

“…The importance of training and exercise testing in obese children is well documented. 6,7,10,15,30 Assessment of functional capacity assists in the metabolic and cardio-respiratory diagnosis and derives individualized training guidelines for this population over weight-loss and rehabilitation programs. Direct measurement of gas exchanges during incremental cardiopulmonary exercise test remains the gold-standard methods to predict metabolic or cardio-respiratory abnormalities in the patient population.…”

Section: Discussionmentioning

confidence: 99%

“…The boys walked 564.9 ± 53.7 m, whereas the girls walked 506.7 ± 55.0 m. Similar walking performance has been reported in previous studies in children. 15,19 The difference between boys and girls could be due to metabolic abnormalities and anthropometric factors, which are usually independently associated with the distance walked. 31 In the present study, we present regression models that allow the evaluator to estimate FATmax for obese children of both genders.…”

Section: Discussionmentioning

confidence: 99%

“…The determination of LIPOXmax may then be used for exercise intensity prescription or for evaluating weight management intervention in obese population. 6,15 However, the use of prediction equation would avoid the need for a systematic cardio-respiratory exercise test, especially when this test is not accessible, and would also serve as an easy tool for the pediatrician or the trainer to assess and follow up patients. The correlations found between 6MWD and FATmax, which are independent of the VO 2 peak, indicate that the ability to oxidize lipids is an index of metabolic fitness as suggested by some authors.…”

Section: Discussionmentioning

confidence: 99%

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Six-minute walking test predicts maximal fat oxidation in obese children

et al. 2012

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BACKGROUND: Obesity is associated with reduced exercise maximal fat oxidation rate (FATmax), which is generally assessed by cardiopulmonary cycling test. The six-minute walking test (6MWT) presents an alternative method in patients. OBJECTIVE: The aim of this study was to establish a practical reference equation facilitating the prediction of FATmax from the 6MWT in obese children of both genders. DESIGN: This study is a cross-sectional study using mixed linear and multiple regression models. RESEARCH METHODS AND PROCEDURES: Anthropometric measurements were recorded and submaximal cycling test and 6MWT conducted for 131 school-aged obese children, 68 boys and 63 girls. A multiple regression analysis for FATmax, including six-minute walking distance (6MWD), anthropometric and cardiac parameters as the dependent variables, was performed for the two genders separately. RESULTS: Mean 6MWD and FATmax were 564.9 ± 53.7 m and 126.5 ± 12.1 mg min À1 for boys and 506.7 ± 55.0 m and 120.7 ± 10.0 mg min À1 for girls, respectively. The 6MWD, body mass index, Z-score, fat-free mass, waist and hip circumferences (WC and HC), rest heart rate, and systolic and diastolic blood pressures were highly correlated with FATmax for both genders. There was a significant correlation between 6MWD and FATmax in both boys and girls (r ¼ 0.88 and r ¼ 0.81, Po0.001, respectively). Stepwise regression analyses revealed that the combinations of 6MWD with HC for boys and 6MWD with WC for girls improved the predictability of the model (R 2 ¼ 0.81 for boys and R 2 ¼ 0.72 for girls; Po0.001). CONCLUSION: In obese children, the 6MWT can be used to predict FATmax when formal test of exercise capacity and gas exchange analysis are unavailable or impractical. It is therefore possible to prescript targeted exercises at FATmax, without performing indirect calorimetry, just from a field test.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Six-minute walking test predicts maximal fat oxidation in obese children

et al. 2012

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Effects of obesity on functional capacity

Pataky

Armand

Müller-Pinget

et al. 2013

Obesity

126

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Objective: To assess the relationships between BMI and walking speed, balance control, sit-to-stand performance (a measure of mass specific lower limb power), and endurance. Design and Methods: Thirty-six women with a BMI 30 kg/m 2 and 10 women with normal body weight (BMI between 18 kg/m 2 and 25 kg/m 2 ) were enrolled in this observational study. The obese group comprised 12 persons with a BMI 30 and <35 (obese), 14 subjects with a BMI 35 and <40 (severe obesity) and 10 people with a BMI 40 kg/m 2 (morbid obesity). All subjects underwent a clinical examination, a gait test, an endurance test (6 minutes walking test), a mass specific lower limb power test (five times sit-to-stand) and a balance test. Results: Obese women exhibited slower fast gait speeds (P < 0.05) with correspondingly shorter stride lengths, poorer sit-to-stand performance (P < 0.05), and endurance (P < 0.05). However, once the state of severe obesity was reached, additional weight gain (morbid obesity) does not seem to decrease these functional capacities any further.Conclusion: This study underlines the importance of assessing obese patients' related physical problems in an early stage of obesity in order to focus exercise regimens and promote appropriate health behaviors.

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