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Linares SN, Beltrame T, Ferraresi C, Galdino GAM, Catai AM. Photobiomodulation effect on local hemoglobin concentration assessed by near-infrared spectroscopy in humans. Lasers Med Sci 2019; 35:641-649. [PMID: 31420794 DOI: 10.1007/s10103-019-02861-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 08/09/2019] [Indexed: 02/05/2023]
Abstract
Exposure of biological tissue to photobiomodulation therapy (PBMT) seems to increase the oxygen availability and mitochondrial electrochemical activity. With the advancement of new technologies, such as near-infrared spectroscopy (NIRS), information can be obtained about the balance between oxygen utilization and delivery by assessing local oxy- ([O2Hb]) and deoxy-myohemoglobin ([HHb]) concentrations, both measured in micromolars (μM). Consequently, NIRS can be used to study ("in vivo") PBMT effects on the oxidative system, including oxygen availability. Thus, the main objective of the present study was to use NIRS to investigate the acute effects of PBMT by light-emitting diode (LED) on the oxygen delivery and utilization in humans. Twelve healthy young participants were treated with a LED device (850 nm, 50 mW, 2 J) and placebo applied over the proximal third of the flexor carpi ulnaris muscle of the left or right forearm selected in a random order. The LED was applied in direct contact with skin and the device was switched on for 40 s in 4 different interventions (I1, I2, I3 and I4) with a 3-min interval between interventions. The placebo condition was considered as the period before the first PBMT. The NIRS device was used to evaluate the relative changes in [O2Hb] and [HHb] before and after placebo and interventions. We found that PBMT statistically increased the [O2Hb] in 0.39 μM. These results demonstrate the potential of PBMT to increase oxygen availability.
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Affiliation(s)
- Stephanie Nogueira Linares
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Thomas Beltrame
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Federal University of São Carlos, São Carlos, São Paulo, Brazil. .,Institute of Computing, University of Campinas, Campinas, São Paulo, Brazil.
| | - Cleber Ferraresi
- Biomedical Engineering Postgraduate Program, Universidade Brasil, São Paulo, Brazil
| | - Gabriela Aguiar Mesquita Galdino
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Aparecida Maria Catai
- Cardiovascular Physical Therapy Laboratory, Department of Physical Therapy, Federal University of São Carlos, São Carlos, São Paulo, Brazil
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Loh WJ, Johnston DG, Oliver N, Godsland IF. Skinfold thickness measurements and mortality in white males during 27.7 years of follow-up. Int J Obes (Lond) 2018; 42:1939-1945. [PMID: 29491491 DOI: 10.1038/s41366-018-0034-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/23/2017] [Accepted: 01/03/2018] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Obesity is a major risk factor for mortality from a range of causes. We investigated whether skinfold measurements were associated with mortality independently of variation in body mass index (BMI). METHODS A prospective analysis of mortality in 870 apparently healthy adult Caucasian men participating in an occupational health cohort was undertaken. At baseline, skinfold measurements were taken at biceps, triceps, iliac and subscapular sites. Derived measurements included the sum of all four skinfolds and subscapular to triceps, subscapular to iliac and BMI to iliac ratios. All-cause mortality was analysed by Cox proportional hazards modelling and death in specific mortality subcategories by competing risks analysis. RESULTS During a mean of 27.7 years follow up, there were 303 deaths (119 cancer, 101 arteriovascular, 40 infection, 43 other). In univariable analysis, BMI was associated with all-cause, cancer, arteriovascular and other mortality and subscapular skinfold with all-cause and arteriovascular mortality. On bivariable analysis, with inclusion of BMI, subscapular skinfold ceased to be a associated with mortality but iliac skinfold emerged as strongly, negatively associated with all-cause and arteriovascular mortality. In multivariable analysis, with inclusion of age, BMI, smoking, alcohol and exercise, iliac skinfold was negatively associated with all-cause (Hazard ratio HR 0.77, 95% confidence interval CI 0.66-0.90, p = 0.002), arteriovascular (HR 0.75, 95%CI 0.58,0.97, p = 0.02) and infection (HR 0.63, 95%CI 0.42,0.94, p = 0.02) death. Among obese participants (BMI ≥ 30 kg/m2), iliac skinfold of ≤9.7 mm was associated with a six-fold increase in all-cause mortality risk. CONCLUSION Low iliac skinfold thickness is an independent risk factor for all-cause mortality in adult white males with risk apparently concentrated among people who are obese.
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Affiliation(s)
- Wann Jia Loh
- Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK. .,Department of Endocrinology, Changi General Hospital, Singapore, Singapore.
| | - Desmond G Johnston
- Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK
| | - Nick Oliver
- Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK
| | - Ian F Godsland
- Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK
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Freedman DS, Katzmarzyk PT, Dietz WH, Srinivasan SR, Berenson GS. The relation of BMI and skinfold thicknesses to risk factors among young and middle-aged adults: The Bogalusa Heart Study. Ann Hum Biol 2010; 37:726-37. [DOI: 10.3109/03014461003641849] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Freedman DS, Katzmarzyk PT, Dietz WH, Srinivasan SR, Berenson GS. Relation of body mass index and skinfold thicknesses to cardiovascular disease risk factors in children: the Bogalusa Heart Study. Am J Clin Nutr 2009; 90:210-6. [PMID: 19420092 PMCID: PMC2697002 DOI: 10.3945/ajcn.2009.27525] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Adverse levels of cardiovascular disease (CVD) risk factors are related to skinfold thicknesses and body mass index (BMI) among children, but the relative strengths of these associations are unknown. OBJECTIVE The objective was to determine whether the sum of the triceps and subscapular skinfold thicknesses (SF sum) is more strongly related to levels of 6 risk factors (triglycerides, LDL and HDL cholesterol, insulin, and systolic and diastolic blood pressure) than is BMI. DESIGN Cross-sectional analyses of schoolchildren examined in the Bogalusa Heart Study from 1981 to 1994 (n = 6866) were conducted. A risk factor summary index was derived by using principal components analysis. RESULTS After race, sex, study period, and age were controlled for, almost all comparisons indicated that BMI was more strongly related to risk factor levels than was the SF sum. Although the differences were generally small, many were statistically significant. Associations with the risk factor summary, for example, were r = 0.50 for BMI and r = 0.47 for SF sum (P < 0.001 for difference). Furthermore, an adverse risk factor summary was observed among 62% of the children with the highest (upper 5%) BMI levels but among only 54% of children with the highest SF sum levels. CONCLUSIONS BMI is at least as accurate as SF sum in identifying children and adolescents who are at metabolic risk. Because of the training and errors associated with skinfold-thickness measurements, the advantages of BMI should be considered in the design and interpretation of clinical and epidemiologic studies.
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Affiliation(s)
- David S Freedman
- Division of Nutrition, Physical Activity and Obesity, Centers for Disease Control and Prevention, Atlanta, GA 30341-3724, USA.
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Williams PT, Hoffman KM. Optimal body weight for the prevention of coronary heart disease in normal-weight physically active men. Obesity (Silver Spring) 2009; 17:1428-34. [PMID: 19553927 PMCID: PMC3778502 DOI: 10.1038/oby.2008.680] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Although 36% of US men are normal weight (BMI <25 kg/m(2)), the health benefits of greater leanness in normal-weight individuals are seldom acknowledged. To assess the optimal body weight with respect to minimizing coronary heart disease (CHD) risk, we applied Cox proportional hazard analyses of 20,525 nonsmoking, nondiabetic, normal-weight men followed prospectively for 7.7 years, including 20,301 who provided follow-up questionnaires. Two-hundred and forty two men reported coronary artery bypass graph (CABG) or percutaneous transluminal coronary angioplasty (PTCA) and 82 reported physician-diagnosed incident myocardial infarction (267 total). The National Death Index identified 40 additional ischemic heart disease deaths. In these normal-weight men, each kg/m(2) decrement in baseline BMI was associated with 11.2% lower risk for total CHD (P = 0.005), 13.2% lower risk for nonfatal CHD (P = 0.002), 19.0% lower risk for nonfatal myocardial infarction (P = 0.01), and 12.2% lower risk for PTCA or CABG (P = 0.007). Compared to men with BMI between 22.5 and 25 kg/m(2), those <22.5 kg/m(2) had 24.1% lower total CHD risk (P = 0.01), 27.9% lower nonfatal CHD risk (P = 0.01), 37.8% lower nonfatal myocardial infarction risk (P = 0.05), and 27.8% lower PTCA or CABG risk (P = 0.02). In nonabdominally obese men (waist circumference <102 cm), CHD risk declined linearly with declining waist circumference. CHD risk was unrelated to change in waist circumference between 18 years old and baseline except as it contributed to baseline circumference. These results suggest that the optimal BMI for minimizing CHD risk lies somewhere <22.5 kg/m(2), as suggested from our previous analyses of incident diabetes, hypertension, and hypercholesterolemia in these men.
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Affiliation(s)
- Paul T Williams
- Donner Laboratory, Life Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, USA.
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Menke A, Muntner P, Wildman RP, Reynolds K, He J. Measures of adiposity and cardiovascular disease risk factors. Obesity (Silver Spring) 2007; 15:785-95. [PMID: 17372330 DOI: 10.1038/oby.2007.593] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE To determine which of five measures of adiposity maintains the strongest association with cardiovascular disease risk factors. RESEARCH METHODS AND PROCEDURES A nationally representative sample of 12,608 adult participants of the third National Health and Nutrition Examination Survey were examined. Waist circumference, total body fat, percent body fat, BMI, and skinfold thickness were measured following a standardized protocol. RESULTS In multivariable adjusted models including waist circumference and BMI as independent variables, waist circumference was a significantly better predictor. The odds ratios (95% confidence intervals) for each standard deviation higher waist circumference and BMI for men were as follows: 1.88 (1.43, 2.48) and 0.99 (0.76, 1.29), respectively, for hypertension; 1.51 (0.87, 2.59) and 1.23 (0.76, 1.99), respectively, for diabetes; and 1.85 (1.48, 2.32) and 1.00 (0.80, 1.24), respectively, for low high-density lipoprotein-cholesterol. The analogous odds ratios (95% confidence intervals) for women were as follows: 2.28 (1.74, 3.00) and 0.91 (0.69, 1.19), respectively, for hypertension; 2.72 (1.85, 4.00) and 0.82 (0.55, 1.23), respectively, for diabetes; and 1.90 (1.47, 2.47) and 1.07 (0.83, 1.38), respectively, for low high-density lipoprotein-cholesterol. Results were markedly similar for waist circumference in models adjusting for total body fat, percent body fat, and skinfold thickness separately. In contrast, waist circumference was not a significantly better predictor of elevated C-reactive protein than the other measures of adiposity. DISCUSSION Waist circumference maintains a stronger association with cardiovascular disease risk factors than other measures of adiposity.
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Affiliation(s)
- Andy Menke
- Department of Epidemiology, Tulane University School of Medicine, New Orleans, LA 70112, USA
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Kim J, Meade T, Haines A. Skinfold thickness, body mass index, and fatal coronary heart disease: 30 year follow up of the Northwick Park heart study. J Epidemiol Community Health 2006; 60:275-9. [PMID: 16476761 PMCID: PMC2465571 DOI: 10.1136/jech.2005.042200] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
STUDY OBJECTIVE To examine the effect of baseline body mass index (BMI) and skinfold thickness (ST) on fatal coronary heart disease (CHD) and all cause mortality after 30 years of follow up. DESIGN Prospective cohort study. SETTING Northwick Park heart study (NPHS) designed to investigate the role of haemostatic variables on CHD. PARTICIPANTS 1511 men and 691 women enrolled in NPHS aged 40 to 64 years at entry. MAIN RESULTS Baseline BMI (kg/m(2)) and forearm, triceps, subscapular, and suprailiac skinfolds ST (mm) were measured. Cox regression was used to calculate hazard ratios for fatal CHD and total mortality for each standard deviation unit increase in obesity adjusting for age, smoking status, total cholesterol, systolic blood pressure, fibrinogen, and factor VII activity. Subjects experienced 250 fatal CHDs and 819 all cause deaths over 30 years (median: 26 years; IQR: 22-28 years). Among men, only BMI (RR = 1.29, 95%CI = 1.12 to 1.49) significantly increased the risk of fatal CHD. Among women, BMI (RR = 1.48, 95%CI = 1.07 to 2.06), as well as, subscapular (RR = 1.65, 95%CI = 1.19 to 2.30), forearm (RR = 1.46, 95%CI = 1.08 to 1.97), and triceps (RR = 1.63, 95%CI = 1.12 to 2.39) skinfolds were predictive of fatal CHD. None of the estimates for all cause mortality were significant except for subscapular skinfold in women (RR = 1.20, 95%CI = 1.02 to 1.42). There was no evidence of interaction between obesity and sex for fatal CHD or all cause death. The effect of obesity on fatal CHD or all cause deaths does not seem to be mediated substantially by cholesterol, systolic blood pressure, or haemostatic variables. CONCLUSIONS BMI is an important risk factor for fatal CHD where its prognostic significance remains after up to 30 years of follow up.
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Affiliation(s)
- Joseph Kim
- Medical Statistics Unit, Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.
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Itoh K, Imai K, Masuda T, Abe S, Nakao H, Tanaka M, Nakamura M. Relationship between serum total cholesterol level and nutritional status in Japanese young female. Nutr Res 1999. [DOI: 10.1016/s0271-5317(99)00075-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Pineau JC. [Functional relationship between fat mass, skinfolds, under or overweight and the "ideal theoretical weight"]. COMPTES RENDUS DE L'ACADEMIE DES SCIENCES. SERIE III, SCIENCES DE LA VIE 1997; 320:667-73. [PMID: 9338000 DOI: 10.1016/s0764-4469(97)85701-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Underscoring a functional relation between fat mass, skinfolds, under or overweight and the 'ideal theoretical weight', constitutes a fundamental datum in anthropology. Indeed, this relation, which differs according to age, sex, ethnic group and physical activity, provides information on the distribution of fat contained in the skinfolds, the under or overweight and the 'ideal theoretical weight'. The value of this relation lies not only in limiting the use of the corpulence index (W/H2) as an indicator of fat mass, but above all in the importance of physical activity and in the existence of a significant change in the distribution of fat according to the factors mentioned above.
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Affiliation(s)
- J C Pineau
- Laboratoire d'anthropologie et écologie de l'alimentation, CNRS, Université Paris-VII, France
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Merkus MP, Mathus-Vliegen LM, Broekhoff C, Heijnen AM. Extreme obesity: sociodemographic, familial and behavioural correlates in The Netherlands. J Epidemiol Community Health 1995; 49:22-7. [PMID: 7707000 PMCID: PMC1060069 DOI: 10.1136/jech.49.1.22] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
STUDY OBJECTIVE To investigate the relationship between sociodemographic, behavioural, and family characteristics and the body mass index (BMI) (weight (kg)/height (m2)) of extremely obese people. DESIGN Self reported sociodemographic, behavioural, and familial characteristics and weight and height were obtained by postal questionnaire. PARTICIPANTS AND SETTING Adult, obese Dutch people who, on their own initiative, contacted our hospital for information on obesity treatment were sent a questionnaire. A total of 244 of 690 subjects had returned the questionnaire within the stated period of 80 days. Due to missing data 19 subjects could not be included in this analysis, leaving 191 women and 34 men. MAIN RESULTS In women the BMI seemed to be significantly inversely associated with the level of education of the partner, the number of cups of coffee consumed, and number of cigarettes smoked a day. In addition, the BMI of women was positively related to BMI of their mothers. Together these variables explained 18.0% of the total variation in BMI. In men none of the selected variables was associated with their BMI. CONCLUSION As the selected variables explained almost one fifth of the total variation in BMI, the impact of sociodemographic, familial, and behavioural factors should have more recognition in strategies aimed at reducing obesity.
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Affiliation(s)
- M P Merkus
- Department of Gastroenterology, Academic Medical Center, University of Amsterdam, The Netherlands
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Donnan SP, Ho SC, Woo J, Wong SL, Woo KS, Tse CY, Chan KK, Kay CS, Cheung KO, Mak KH. Risk factors for acute myocardial infarction in a southern Chinese population. Ann Epidemiol 1994; 4:46-58. [PMID: 8205271 DOI: 10.1016/1047-2797(94)90042-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Although the mortality rate from coronary artery disease in Hong Kong is only one-fourth of that of northern Europe and the United States, the disease has been and remains the second major cause of death (after all cancers combined). Beginning in 1987, we have conducted a case-control study of acute myocardial infarction in four Hong Kong hospitals. This study, one of the biggest case-control studies conducted in the Chinese population of both men and women, confirms the importance of several risk factors--cigarette smoking, history of hypertension, history of diabetes, body fatness, and lack of physical activity--previously described in data collected in western populations. In addition, more adverse childhood experience was also found to be an important risk factor of acute myocardial infarction. Further research in appropriate intervention measures in education in the prevention and cessation of smoking, the control of blood pressure, diabetes, and overweight, and adequate exercise could significantly help reduce the risk of acute myocardial infarction in the Hong Kong Chinese population.
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Affiliation(s)
- S P Donnan
- Department of Community and Family Medicine, Chinese University of Hong Kong, Shatin
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Stout RW. Risk Factors for Atherosclerosis in Diabetes Mellitus. DIABETES AND ATHEROSCLEROSIS 1992. [DOI: 10.1007/978-94-011-2734-9_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Sánchez-Andrés A. Fatness and fat patterning in relation to age changes and menarche. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf02444055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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