assessment-physical-activity-intensity-with-accelerometers-oxygen

Assessment of Physical Activity Intensity with Accelerometers and Oxygen Consumption

The study compares objective methods of assessing the intensity of physical activity. The goal was to identify the differences in physical activity ...

Universidad Andres Bello

Introduction: the increase on prevalence of obesity has been linked to a higher number of bariatric surgeries, being sleeve gastrectomy (SG) the most frequent bariatric procedures in the world. However, there are few studies that determine the impact of SG on health's determinants such as physical fitness (PF) and physical activity (PA). Objectives: to describe the changes in PF and PA of patients after SG. Methods: twenty-three women with obesity (mean 36.1 ± 11.1 years old and body mass index [BMI] of 35.1 ± 3.4 kg/m2) were evaluated preoperatively to SG and at one and three months after surgery. An assessment of PF was conducted, including handgrip (HGS) and quadriceps muscle strength (QMS) with dynamometers and cardiorespiratory fitness (CRF) with an ergospirometer. PA was assessed with a three-axis accelerometer. Results: the absolute VO2 peak decreased after the first and third month (p < 0.001) post SG. The VO2 peak relative to body weight showed an increase from baseline after the SG (p = 0.002). After SG, there was a reduction in absolute values for HGS and QMS (p < 0.001) and an increase in relative HGS after three months post-surgery compared to preoperative (p = 0.011), without changes in relative QMS (p = 0.596). No changes in PA were observed. Conclusions: after SG, there is a short term decline on PF when it is expressed on absolute values. However, when it is expressed in relative terms to body weight, some components of PF improve, while others showed no change. There was no modification in PA levels of the participants.

Physical fitness and physical activity in women with obesity: short term effects of sleeve gastrectomy.

Although bariatric surgery (BS) is recognized as an effective strategy for body weight loss, its impact on cardiorespiratory fitness (CRF) is still unclear. We aimed to examine postoperative changes in CRF (VO ) and its relationship with weight loss among adults undergoing BS. We systematically searched the WoS, PubMed, MEDLINE, and Scopus databases. Observational and intervention studies were selected reporting the presurgery and postsurgery CRF, measured by breath-by-breath VO or its estimation. Eleven articles (312 patients) revealed that BS leads to a reduction in absolute VO in the short term (effect size, ES = -0.539; 95%CI = -0.708, -0.369; p < 0.001), and those patients who suffered a more significant decrease in BMI after BS also had a greater loss of absolute VO . However, VO relative to body weight increased after surgery (ES = 0.658; 95%CI = 0.473, 0.842; p < 0.001). An insufficient number of studies were found investigating medium and long-term changes in CRF after BS. This study provides moderate-quality evidence that the weight loss induced by BS can reduce CRF in the short term, which represents a therapeutic target to optimize BS outcomes. More high-quality studies are needed to evaluate the impact of BS on VO in the short, medium, and long term including normalized values for fat-free mass.

Effects of bariatric surgery on cardiorespiratory fitness: A systematic review and meta-analysis.

Background: lifestyle and cardiometabolic risk factors information is scarce regarding youth and adults of Latin-American ethnics. Objective: the primary aim was to describe the lifestyle and cardiometabolic risk factors for arterial hypertension (HTN) and diabetes in ethnic Latin-American groups (Mapuche and Aymara) and other non-ethnics > 15 years of age in the Chilean population. A secondary aim was to determine the association between physical activity 'intensity' with HTN and diabetes markers. Material and methods: a representative sample from the National Chilean Health Survey 2016-2017, included Mapuche (EG-Map; women n = 166, men n = 300; total n = 466), Aymara (EG-Aym; women n = 96, men n = 55; total n = 151), and a non-ethnic population group (No-EG; women n = 2057, men n = 3445; total n = 5502). The main outcomes were; systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (GL), and secondary outcomes were other anthropometric, lipid profile, and lifestyle parameters. Results: GL was significantly associated with nutrition (0.9 %, p < 0.0001), tobacco and alcohol habits (0.6 %, p < 0.0001). SBP was significantly associated with nutrition (whole-grains 0.04, p = 0.001; water consumption 0.07, p < 0.0001), sleep hygiene (week 0.04, p = 0.030; on weekends -0.04, p = 0.026), and alcohol consumption (-0.06, p < 0.0001). Conclusion: in conclusion, lifestyle differences among Mapuche and Aymara ethnic groups in comparison with non-ethnic Chilean peers > 15 years are significantly associated with blood pressure and glycemia.

Lifestyle and cardiometabolic risk factors in the ethnic and non-ethnic population > 15 years of age: results from the National Chilean Health Survey 2016-2017.

This study aimed to (1) characterize cardiometabolic factors in self-reported hip and knee osteoarthritis (OAD) across four body composition phenotypes defined by muscle mass and adiposity, and (2) associate risk factors with diabetes and hypertension (HTN).

A Higher Skeletal Muscle Mass and Lower Adiposity Phenotype Is Associated with Better Cardiometabolic Control in Adults with Hip and Knee Osteoarthritis: Results from the Chilean National Health Survey 2016-2017.

The objective of the study was to describe and compare the acute response of muscle oxygen saturation (SmO2) and hemoglobin concentration (Hgb) in the vastus lateralis (VL) during resistance exercise protocols until failure.

Can strength exercise affect the muscle oxygen saturation response?

Obesity is a major health burden worldwide. Although bariatric surgery (BS) is recognized as an effective strategy for weight loss and comorbidities improvement, its impact on muscle strength and quality is still unclear. We aimed to examine postoperative changes in muscle strength and quality and their relationship with body mass index (BMI) changes among adults undergoing BS. To this end, we systematically searched the WoS, PubMed, EBSCO, and Scopus databases. The meta-analyses, which included 24 articles (666 participants), showed that BS reduces absolute lower-limb isometric strength (ES = -0.599; 95% CI = -0.972, -0.226; p = 0.002). Subjects who experienced a more significant reduction in BMI after BS also suffered a higher loss of absolute muscle strength. Similarly, absolute handgrip strength showed a significant decrease (ES = -0.376; 95% CI = -0.630, -0.121; p = 0.004). We found insufficient studies investigating medium- and long-term changes in muscle strength and/or quality after BS. This study provides moderate-quality evidence that BS-induced weight loss can reduce the strength of appendicular muscles in the short term, which should be addressed in management these subjects. More high-quality studies are needed to evaluate the impact of BS on muscle strength and the different domains of muscle quality in the medium and long term (registered on PROSPERO CRD42022332581).

Effects of bariatric surgery on muscle strength and quality: A systematic review and meta-analysis.

the independent association between parental obesity, sleep and lifestyle habits with cardiometabolic risk factors in children and adolescents has been widely explored in the literature. Our study represents a novel approach to comprehensively investigate a complex model encompassing various aspects associated with cardiometabolic risk in youth. Thus, the aim of the present study was to verify the relationship between parental obesity and cardiometabolic risk in children and adolescents, considering the mediator role of health indicators according to sleep time.

Parental obesity, health determinants, and cardiometabolic risk according to sleep duration in schoolchildren: analysis through structural equations.

peripheral (PVD) and cerebral vascular disease (CeVD) are two vascular conditions of relevance in older adults. However, there is little epidemiological studies about the body composition role (i.e., skeletal muscle mass [by calf circumference] and adiposity [by waist circumference]) in the diabetes and hypertension (HTN) prevalence in PVD and CeVD conditions.

Skeletal muscle and body fat interact with blood pressure in cerebral vascular disease: characterization study from the Chilean National Health Survey 2016-17.

Article	Year
Physical fitness and physical activity in women with obesity: short term effects of sleeve gastrectomy. Nutricion hospitalaria\| PubMed ID: 31282170	2019
Effects of bariatric surgery on cardiorespiratory fitness: A systematic review and meta-analysis. Obesity reviews : an official journal of the International Association for the Study of Obesity\| PubMed ID: 34927337	2022
Lifestyle and cardiometabolic risk factors in the ethnic and non-ethnic population > 15 years of age: results from the National Chilean Health Survey 2016-2017. Nutricion hospitalaria\| PubMed ID: 36748410	2023
A Higher Skeletal Muscle Mass and Lower Adiposity Phenotype Is Associated with Better Cardiometabolic Control in Adults with Hip and Knee Osteoarthritis: Results from the Chilean National He... Nutrients\| PubMed ID: 37836547	2023
Can strength exercise affect the muscle oxygen saturation response? Acta of bioengineering and biomechanics\| PubMed ID: 38314466	2022
Effects of bariatric surgery on muscle strength and quality: A systematic review and meta-analysis. Obesity reviews : an official journal of the International Association for the Study of Obesity\| PubMed ID: 38859617	2024
Parental obesity, health determinants, and cardiometabolic risk according to sleep duration in schoolchildren: analysis through structural equations. Italian journal of pediatrics\| PubMed ID: 39522030	2024
Skeletal muscle and body fat interact with blood pressure in cerebral vascular disease: characterization study from the Chilean National Health Survey 2016-17. Nutricion hospitalaria\| PubMed ID: 40504022	2025

Paulina Ibacache-Saavedra

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