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The Mediterranean Diet in Osteoporosis Prevention: An Insight in a Peri- and Post-Menopausal Population.
Quattrini, S, Pampaloni, B, Gronchi, G, Giusti, F, Brandi, ML
Nutrients. 2021;13(2)
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Osteoporosis (OP) is a public health problem in western countries and steadily increasing worldwide. Management and prevention of osteoporosis starts with lifestyle, and diet is of critical interest because it is one of the few safely modifiable risk factors. Several different nutrients, especially calcium are essential for bone and mineral metabolism. It has been observed that the incidence of OP is lower in the Mediterranean area. This prospective observational study looks at the relationship between Mediterranean diet (MD), calcium intake and bone health. Two hundred peri- and post-menopausal women aged 30-80 years, took part. Their adherence to the MD and dietary calcium intake were evaluated by a first visit and a follow-up visit, through questionnaires. Although not statistically significant, in both visits a slight increase in calcium intake was observed for high adherence to MD diet. However, it did highlight the importance of preventive action such as a 15–20 min nutritional conversation to improve lifestyle habits. A cause-effect relationship between MD adherence and calcium intake could not be established by this study, a randomized controlled trial would be useful to gather more data.
Abstract
Osteoporosis represent a widespread public health problem. The management and prevention of osteoporosis and related low energy fractures start with a correct lifestyle and proper nutrition. Several different nutrients are essential for bone and mineral metabolism, especially calcium. Nevertheless, a well-balanced nutrition, such as Mediterranean diet (MD), proved to be beneficial for several chronic diseases and also fragility fractures resulted lower in the Mediterranean area. A prospective observational study in a population of two hundred peri- and post-menopausal women (aged 30-80 years) was developed at Careggi hospital, Florence. Both MD adherence and dietary calcium intake were evaluated in occasion of a "first visit" and a "follow-up" visit, through validated questionnaires. From a descriptive point of view, although not statistically significant, in both visits a slight increase in calcium intake was observed for high adherence to MD diet. Moreover, a short nutritional interview (20 min) was applied in our population and demonstrated to be sufficient to significantly improve MD adherence level (mean score at T0 = 6.98 ± 1.74 and T1 = 7.53 ± 1.68), opening promising paths in osteoporosis prevention.
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A cross-sectional study: Associations between sarcopenia and clinical characteristics of patients with type 2 diabetes.
Cui, M, Gang, X, Wang, G, Xiao, X, Li, Z, Jiang, Z, Wang, G
Medicine. 2020;99(2):e18708
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Sarcopenia is characterised by the loss of muscle mass, decrease of muscle strength and decline of physical performance and is related to reduced physical ability, impaired cardiorespiratory function, disability and death in the elderly. Type 2 diabetics are at higher risk of developing sarcopenia. The aim of this cross-sectional study was to evaluate clinical characteristics of sarcopenia in elderly type 2 diabetics in the Northeast of China. 132 participants completed the study which was based on self-reported medical and lifestyle history, and clinical evaluations including measurements of weight, height and muscle strength, imaging to establish sarcopenia and blood tests. 28.8% of participants had sarcopenia. Age, increased truncal fat mass and increased free thyroxine increased the risk of sarcopenia, whilst regular exercise, being female, taking metformin, a higher body mass index and increased trunk skeletal mass were associated with a lower risk of sarcopenia. The authors point out that limitations include the small sample size and that, as this is a cross-sectional study, cause and effect cannot be established.
Abstract
Sarcopenia is a geriatric syndrome and it impairs physical function. Patients with type 2 diabetes mellitus (T2DM) are at a higher risk of sarcopenia. The purpose of this study is to explore characteristics of general information and metabolic factors of sarcopenia in patients with T2DM in the northeast of China, and provide information for the prevention and treatment of sarcopenia in clinical practice.Patients with T2DM aged ≥65 were recruited in Changchun from March 2017 to February 2018. Questionnaires of general information, physical examination, laboratory and imaging examination were conducted. The patients were assigned into sarcopenia group and non-sarcopenia group according to the diagnostic criteria proposed by Asian working group for sarcopenia (AWGS), and the differences between 2 groups were analyzed.A total of 132 participants were included in this study, of which, 38 (28.8%) were diagnosed with sarcopenia. 94 (71.2%) were with no sarcopenia. Logistic regression analysis showed that age (OR: 1.182, 95%CI: 1.038-1.346), trunk fat mass (TFM) (OR: 1.499, 95%CI: 1.146-1.960) and free thyroxine (FT4) (OR: 1.342, 95%CI: 1.102-1.635) were independent risk factors for sarcopenia. BMI (body mass index) (OR: 0.365, 95%CI: 0.236-0.661), exercise (OR: 0.016, 95%CI: 0.001-0.169), female (OR: 0.000, 95%CI: 0.00-0.012), metformin (OR: 0.159, 95%CI: 0.026-0.967) and TSM (trunk skeletal muscle mass) (OR: 0.395, 95%CI: 0.236-0.661) were protective factors for sarcopenia.Sarcopenia in patients with T2DM is associated with increased age, increased TFM and increased FT4 level. Regular exercise, female, metformin administrations, high BMI and increased TSM are associated with lower risk of sarcopenia.
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Impact of changes in physical activity or BMI on risk of heart failure in women - the prospective population study of women in Gothenburg.
Halldin, AK, Lissner, L, Lernfelt, B, Björkelund, C
Scandinavian journal of primary health care. 2020;38(1):56-65
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Heart failure (HF) is a severe and progressive condition with poor prognosis. Obesity is a risk factor for HF. The aim of this study was to investigate the impact of change in physical activity or change in body mass index on the risk of later developing HF in women without a previous diagnosis of HF. This study is prospective longitudinal study which includes 1749 healthy women from the Prospective Population Study of Women in Gothenburg. Results indicate that gaining weight in early middle age is more harmful than gaining weight later in life, with regard to the risk of developing HF later in life. Furthermore, reduced risk of future HF in healthy women may be achieved by remaining physically active from young middle age and throughout life or by increasing the level of physical activity. Authors conclude that the role of physical activity in preventing the development of obesity must be taken into account.
Abstract
Objective: To longitudinally evaluate the impact of change in physical activity or change in body mass index (BMI) over time on the risk of developing heart failure (HF) in women without a previous diagnosis of HF.Design and setting: Longitudinal, observational, prospective study of women in Gothenburg, Sweden. Data on BMI and level of physical activity were collected from examinations 1968-1992 and hospital diagnoses and mortality data were ascertained from 1980 to 2012.Subjects: Data were obtained from 1749 women included in the Prospective Population Study of Women in Gothenburg.Main outcome measures: Hazard ratio (HR) for HF was calculated, using a Cox regression model.Results: Women with stable high physical activity during 1968-1980 and 1980-1992 reduced their risk of subsequent HF compared to the non-active women (for 1968-1980 HR 0.66, 95% Confidence Interval (CI) 0.44-0.99 and for 1980-1992 HR 0.47, 95% CI 0.29-0.74). Women with increasing levels of physical activity during 1980-1992 reduced their risk of HF compared to the non-active women (HR 0.40, 95% CI 0.22-0.72). Increase in BMI from overweight to obesity during 1968-1980 predicted increased risk of developing HF (HR 1.93, 95% CI 1.18-3.14).Conclusions: Reduced risk of future HF in healthy women may be achieved by remaining physically active from young middle age and throughout life or by increasing the level of physical activity. This is particularly important for sedentary women in middle age. The role of physical activity in preventing the development of obesity must be taken into account.Key pointsA sedentary lifestyle and obesity are risk factors for developing heart failure (HF) in women.The risk of developing HF may be reduced by increasing the level of activity in sedentary middle-aged women.For younger women, avoiding obesity is most important to reduce the risk of later HF.Primary care has a key role in guiding women towards the most effective lifestyle changes to prevent development of HF.
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Effects of COVID-19 Lockdown on Lifestyle Behaviors in Children with Obesity Living in Verona, Italy: A Longitudinal Study.
Pietrobelli, A, Pecoraro, L, Ferruzzi, A, Heo, M, Faith, M, Zoller, T, Antoniazzi, F, Piacentini, G, Fearnbach, SN, Heymsfield, SB
Obesity (Silver Spring, Md.). 2020;28(8):1382-1385
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The coronavirus disease 2019 (COVID-19) pandemic has had far reaching health, social, and economic implications. Among them is the abrupt cessation of school programs for children and adolescents in Italy. The aim of this study was to test the hypothesis that factors contributing to weight gain among children and adolescents with overweight and obesity are exacerbated during a pandemic-associated lockdown. This study is a longitudinal clinical trial which enrolled non-adult participants (n=41) with obesity as controls in the ongoing longitudinal observational OBELIX Study in Verona, Italy. Results indicate that eating, activity, and sleeping behaviours changed in an unfavourable direction just after three weeks into their confinement during the national lockdown. Thus, findings support the hypothesis that lockdown appears to create an unfavourable environment for maintaining healthy lifestyle behaviours Authors conclude that recognition of the lockdown phenomenon is the first step in taking preventive measures.
Abstract
OBJECTIVE The aim of this study was to test the hypothesis that youths with obesity, when removed from structured school activities and confined to their homes during the coronavirus disease 2019 pandemic, will display unfavorable trends in lifestyle behaviors. METHODS The sample included 41 children and adolescents with obesity participating in a longitudinal observational study located in Verona, Italy. Lifestyle information including diet, activity, and sleep behaviors was collected at baseline and 3 weeks into the national lockdown during which home confinement was mandatory. Changes in outcomes over the two study time points were evaluated for significance using paired t tests. RESULTS There were no changes in reported vegetable intake; fruit intake increased (P = 0.055) during the lockdown. By contrast, potato chip, red meat, and sugary drink intakes increased significantly during the lockdown (P value range, 0.005 to < 0.001). Time spent in sports activities decreased by 2.30 (SD 4.60) h/wk (P = 0.003), and sleep time increased by 0.65 (SD 1.29) h/d (P = 0.003). Screen time increased by 4.85 (SD 2.40) h/d (P < 0.001). CONCLUSIONS Recognizing these adverse collateral effects of the coronavirus disease 2019 pandemic lockdown is critical in avoiding depreciation of weight control efforts among youths afflicted with excess adiposity. Depending on duration, these untoward lockdown effects may have a lasting impact on a child's or adolescent's adult adiposity level.
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Adherence to the Mediterranean Diet and Its Association with Body Composition and Physical Fitness in Spanish University Students.
Cobo-Cuenca, AI, Garrido-Miguel, M, Soriano-Cano, A, Ferri-Morales, A, Martínez-Vizcaíno, V, Martín-Espinosa, NM
Nutrients. 2019;11(11)
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The Mediterranean diet (MD) represents a dietary pattern that incorporates healthy traditional eating habits which includes high consumption of vegetables, fruit, legumes, nuts, beans, whole grains, fish, and unsaturated fats, and low consumption of red meat and dairy products. The Mediterranean Diet Adherence Screener (MEDAS-14 items) is a valid instrument for the estimation of adherence to the MD. The objectives of this study were to: 1. Estimate the prevalence of the adherence to the MD 2. Assess the association of adherence to the MD with physical fitness and body composition 3. Know the ability of each MEDAS item in the same sample to predict MD adherence. This study is a cross-sectional observational study which was performed with 310 first-year Spanish university students, aged between 18 and 30 years. Results indicate low prevalence of good adherence to the MD; and the participants with good adherence had high protein and low-fat intake compared to those with medium to low adherence. Furthermore, higher levels of physical fitness were also noticed amongst participants with good adherence to the MD. Twelve of the 14 items of the MEDAS score were associated with a high adherence to the MD. Authors conclude that MD adherence benefits both cardiorespiratory and muscular fitness amongst young adults.
Abstract
The aims of this study were to assess the association of adherence to the Mediterranean diet (MD) with physical fitness and body composition in Spanish university students and to determine the ability to predict the MD adherence of each Mediterranean Diet Adherence Screener (MEDAS) item. A cross-sectional study was performed involving 310 first-year university students. Adherence to the MD was evaluated with MEDAS-14 items. Anthropometric variables, body composition, and physical fitness were assessed. Muscle strength was determined based on handgrip strength and the standing long jump test. Cardiorespiratory fitness (CRF) was measured using the Course-Navette test. Only 24% of the university students had good adherence to the MD. The ANCOVA models showed a significant difference between participants with high adherence to the MD and those with medium and low adherence in CRF (p = 0.017) and dynamometry (p = 0.005). Logistic binary regression showed that consuming >2 vegetables/day (OR = 20.1; CI: 10.1-30.1; p < 0.001), using olive oil (OR = 10.6; CI: 1.4-19.8; p = 0.021), consuming <3 commercial sweets/week (OR = 10.1; IC: 5.1-19.7; p < 0.001), and consuming ≥3 fruits/day (OR = 8.8; CI: 4.9-15.7; p < 0.001) were the items most associated with high adherence to the MD. In conclusion, a high level of adherence to the MD is associated with high-level muscular fitness and CRF in Spanish university students.
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The complex scenario of obesity, diabetes and hypertension in the area of influence of primary healthcare facilities in Mexico.
Alcalde-Rabanal, JE, Orozco-Núñez, E, Espinosa-Henao, OE, Arredondo-López, A, Alcayde-Barranco, L
PloS one. 2018;13(1):e0187028
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According to the National Health and Nutrition Survey, 73% of adult population in Mexico lived with at least one chronic condition, such as diabetes, hypertension and coronary heart diseases. Obesity is one of the main risk factors for developing these chronic diseases. The target of this study was to characterise the status of obesity, hypertension and diabetes and factors associated to the prevalence of these chronic conditions in the adult population in Mexico. This study used cross-sectional observational method and explored the various risk markers through a survey that included analysis of body composition, food consumption and physical activity. The survey result showed that amongst the studied population, people with higher education have 90% less probability of living with diabetes than those with no education. The authors concluded that change in diet patterns and imparting knowledge in planning meals can play an important role in the aetiology of the prevalent chronic diseases.
Abstract
INTRODUCTION Among non-communicable chronic diseases (NCCD), diabetes and hypertension are the main cause of adult mortality worldwide. Among the members of the Organization for Economic Cooperation and Development, Mexico is first in prevalence of diabetes and second in obesity. To face this problematic situation of NCCDs the Ministry of Health declared a national epidemiological alert against the overweight, obesity and diabetes. The target of this study is to characterize the status of obesity, diabetes and hypertension in the adult population in the area of influence of primary health facilities located in high social marginality areas. METHODS We conducted a cross-sectional observational study and used a convenience sample. A survey was conducted on a population of 18 years old and above in four primary health facilities in four Mexican States. The survey explored sociodemographic characteristics, the presence of chronic diseases, the access to healthcare services, risk factors and life styles. We also applied a complementary questionnaire to 20% of the participants, in order to explore food consumption during the last week and physical activity (International Physical Activity Questionnaire). We based our analysis on descriptive statistics and logistic multivariate regression to analyze factors associated with diabetes and hypertension. RESULTS 73% (n = 7531, CI 0.72-0.74) percent of the population reported being diabetic, hypertensive and/or overweight. The majority of them receive healthcare in public health services. People over 40 years old, are 11 times more probable of living with diabetes and 8.7 times more probable of living with hypertension. Both conditions affect mostly women, whose main activity is to be a housewife. People who have lunch and dinner out of home are more likely to develop diabetes. People who perform intense physical activity are less likely to live with hypertension. CONCLUSION According to the self-report, more than 70% of adult population living in areas with high social marginality suffer diabetes, hypertension and obesity. However, the percentage of people who live with these chronic conditions and are not aware of them, is unknown. The Mexican health system needs a primary healthcare that emphasizes on health promotion, timely detection of risk factors of Non Communicable Diseases and prevention of their complications.
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Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls.
Hohman, EE, Balantekin, KN, Birch, LL, Savage, JS
BMC public health. 2018;18(1):1285
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Adolescence is a critical period for bone development. Maximizing bone development during adolescence (mean age of 12.5 years) may result in greater adult bone mineral content and protection against osteoporosis and fracture later in life. The objective of the study is to determine whether bone mineral content in adolescent girls is related to self-reported dieting, eating, and weight-related behaviours. The study recruited 197 non-Hispanic white 5-year-old girls who were assessed every 2-years from age 5 to age 15 years. Results show that who begin dieting in preadolescence have a higher risk of impaired bone mineral build-up compared to girls who began dieting later in adolescence or did not diet in adolescence. Authors conclude that measures of disordered eating attitudes in healthy children are associated with poorer bone health. Interventions to prevent dieting in preadolescents and adolescents may improve bone health.
Abstract
BACKGROUND Peak bone mass accrual occurs during adolescence, a time when dieting and related eating behaviors are common. Impaired bone mineral accrual is a known consequence of eating disorders in adolescents, but the effects of subclinical dieting behaviors on bone mineral content (BMC) have not been described in this age group. The goal of this analysis was to determine whether dieting behavior in preadolescence and adolescence is associated with bone mineral accrual in adolescent girls. METHODS Non-Hispanic white girls (n = 139) were followed in a longitudinal cohort study. BMC was assessed at ages 9 and 15y. Dieting to lose weight was reported every 2 years, and dietary restraint and disinhibition, eating attitudes, weight concerns, and body esteem were assessed at age 11y. Girls were classified as "early dieters" if they first dieted by age 11y (31.7%), "adolescent dieters" if they first dieted after 11y (46.8%), or non-dieters if they did not report dieting by 15 y (21.6%). The effect of dieting related variables on BMC at 15y and change in BMC from 9 to 15y was assessed using linear regression, controlling for height, weight, BMI, physical activity, and pubertal status. RESULTS Girls who first reported dieting to lose weight by age 11y had a 4.2% lower bone mineral accrual across adolescence (p = 0.02) and 3.1% lower BMC at age 15y (p = 0.005) than girls who first reported dieting after 11y or not at all. Number of weight control behaviors used, dietary restraint, and weight concerns were also negatively associated with BMC (p < 0.05). CONCLUSIONS Dieting behavior in preadolescence is associated with reduced bone mineral accrual. Strategies to promote optimal bone development should include prevention of dieting. TRIAL REGISTRATION Clinicaltrials.gov NCT03342430, November 17, 2017. Retrospectively registered.
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Prevalence and determinants of physical activity in a mixed sample of psychiatric patients in Saudi Arabia.
Alosaimi, FD, Abalhasan, MF, Alhabbad, AA, Fallata, EO, Haddad, BA, AlQattan, NI, Alassiry, MZ
Saudi medical journal. 2018;39(4):401-411
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Physical activity has been shown to considerably reduce the burden of several non-communicable disorders (are diseases of long duration and generally slow progression), such as heart disease, stroke, diabetes, and breast and colon cancers. The aim of the study is to estimate the prevalence of physical activity among a mixed group of patients with psychiatric illnesses in Saudi Arabia. Furthermore, the study sought to evaluate the associations between physical activity, patients with different psychiatric diagnoses and the use of psychotropic medications. The study is a cross-sectional observational study that recruited 1185 patients seeking psychiatric advice, with an average age of 38.0±13.0 years. Results indicate a low prevalence of physical activity in a large, mixed sample of patients with psychiatric illnesses in both inpatient and outpatient settings in Saudi Arabia. Authors conclude that physical activity levels vary according to the type of psychiatric disease and the medications used. They outline that it is important to assess the physical activity status in patients with psychiatric illnesses and promote physical activity programs among psychiatric patients.
Abstract
OBJECTIVES To estimate prevalence of physical activity and its associations with various psychiatric disorders and the use of psychotropic medications. METHODS A cross-sectional observational study was carried out between July 2012 and June 2014. Patients were enrolled from a number of hospitals located in 5 regions of the Kingdom of Saudi Arabia. RESULTS A total of 1185 patients were included in current analysis: 796 were outpatients, and 389 were inpatients. Out of 1,185 patients, 153 (12.9%) were physically active. Much higher rates of physical activity were reported among males than females (15.9% versus 9.6%, p less than 0.001). According to the univariate analysis, higher rates of physical activity were positively correlated with primary bipolar disorders, the use of antianxiety medications and, to a lesser extent, use of antipsychotic medications, but they were negatively correlated with primary anxiety disorders, use of antidepressant medications, and use of multiple psychotropic medications. The associations between physical activity and primary bipolar disorders (odds ratio [OR]=2.47, p=0.002), use of antianxiety medications (OR=3.58, p=0.003), and use of multiple psychotropic medications (OR=0.33, p less than 0.001) remained significant after adjusting for demographic and clinical characteristics. CONCLUSION We report a variable but generally low prevalence of physical activity among a large, mixed sample of psychiatric patients in Saudi Arabia. These findings may highlight the importance of assessing physical activity status of psychiatric patients and the critical need for physical activity promotion programs among this group of disadvantaged patients.
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Walking balance is mediated by muscle strength and bone mineral density in postmenopausal women: an observational study.
Ibeneme, SC, Ekanem, C, Ezuma, A, Iloanusi, N, Lasebikan, NN, Lasebikan, OA, Oboh, OE
BMC musculoskeletal disorders. 2018;19(1):84
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Menopause is associated with changes in body composition such as an increase in body weight and body fat, and a decrease in muscle and bone mass. These changes in body composition may be partly responsible for an increased risk of falls in older women. This observational study had two aims: 1) to explore differences in body composition between premenopausal and postmenopausal women, and 2) to explore how body composition relates to walking balance in postmenopausal women. Fifty-one pre-menopausal and 50 postmenopausal women were selected to take part in this Nigerian study. The women were tested for hand grip strength (HGS), bone mineral density (BMD), percentage body fat mass (%BFM), fat mass (FM) fat-free mass (FFM) and body mass index (BMI). A test was also carried out to assess walking balance (WB) in each of the women. The researchers found that the postmenopausal women had higher BMI, %BFM, FM and lower HGS, compared to the premenopausal women. HGS was the strongest predictor of WB in postmenopausal women and BMD was also related to WB. The authors concluded that differences in body composition may adversely impact muscle strength in postmenopausal women. Muscle strength and BMD are associated with WB, but only explain a small amount of the variance for WB. Therefore, other factors in addition to musculoskeletal health are necessary to mitigate fall risk in postmenopausal women.
Abstract
BACKGROUND Depletion of ovarian hormone in postmenopausal women has been associated with changes in the locomotor apparatus that may compromise walking function including muscle atrophy/weakness, weight gain, and bone demineralization. Therefore, handgrip strength (HGS), bone mineral density (BMD) and body composition [percentage body fat mass (%BFM), fat mass (FM), Fat-free mass (FFM) and body mass index (BMI)], may significantly vary and predict WB in postmenopausal women. Consequently, the study sought to 1. Explore body composition, BMD and muscle strength differences between premenopausal and postmenopausal women and 2. Explore how these variables [I.e., body composition, BMD and muscle strength] relate to WB in postmenopausal women. METHOD Fifty-one pre-menopausal (35.74 + 1.52) and 50 postmenopausal (53.32 + 2.28) women were selected by convenience sampling and studied. Six explanatory variables (HGS, BMD, %BFM, FFM, BMI and FM) were explored to predict WB in postmenopausal women: Data collected were analyzed using multiple linear regression, ANCOVA, independent t-test and Pearson correlation coefficient at p < 0.05. RESULT Postmenopausal women had higher BMI(t = + 1.72; p = 0.04), %BFM(t = + 2.77; p = .003), FM(t = + 1.77; p = 0.04) and lower HGS(t = - 3.05; p = 0.001),compared to the premenopausal women. The predicted main effect of age on HGS was not significant, F(1, 197) = 0.03, p = 0.06, likewise the interaction between age and %BFM, F(1, 197) = 0.02, p = 0.89; unlike the predicted main effect of %BFM, F(1, 197) = 10.34, p = .002, on HGS. HGS was the highest predictor of WB (t = 2.203; β=0.3046) in postmenopausal women and combined with T-score right big toe (Tscorert) to produce R2 = 0.11;F (2, 47)=4.11;p = 0.02 as the best fit for the predictive model. The variance (R2) change was significant from HGS model (R2 = 0.09;p = 0.03) to HGS + Tscorert model (R2 = 0.11;p = 0.02). The regression model equation was therefore given as: WB =5.4805 + 0.1578(HGS) + (- 1.3532) Tscorert. CONCLUSION There are differences in body composition suggesting re-compartmentalization of the body, which may adversely impact the (HGS) muscle strength in postmenopausal women. Muscle strength and BMD are associated with WB, although, only contribute to a marginal amount of the variance for WB. Therefore, other factors in addition to musculoskeletal health are necessary to mitigate fall risk in postmenopausal women.
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Inflammation and glucose homeostasis are associated with specific structural features among adults without knee osteoarthritis: a cross-sectional study from the osteoarthritis initiative.
Stout, AC, Barbe, MF, Eaton, CB, Amin, M, Al-Eid, F, Price, LL, Lu, B, Lo, GH, Zhang, M, Pang, J, et al
BMC musculoskeletal disorders. 2018;19(1):1
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Individuals with osteoarthritis (OA) typically present with greater systemic inflammation and impaired glucose homeostasis. Currently it is unclear whether these factors are associated with early-stage OA, namely bone marrow lesions and swelling. The purpose of this cross-sectional study was to investigate the role of inflammation and glucose homeostasis in early-stage OA. Using baseline data from the Osteoarthritis Initiative, 343 participants were enrolled and tested for markers of inflammation and impaired glucose homeostasis. Bone marrow lesions and swelling were also assessed through imaging results. Results indicate that among individuals without OA, those with greater systemic inflammation were more likely to have bone marrow lesions and knee swelling. According to these results, the authors conclude that systemic inflammation and glucose homeostasis are related to structural features of osteoarthritis. Future studies should explore whether these factors are predictive of OA in order to identify therapeutic targets to prevent or delay the onset of knee OA.
Abstract
BACKGROUND Greater age and body mass index are strong risk factors for osteoarthritis (OA). Older and overweight individuals may be more susceptible to OA because these factors alter tissue turnover in menisci, articular cartilage, and bone via altered glucose homeostasis and inflammation. Understanding the role of inflammation and glucose homeostasis on structural features of early-stage OA may help identify therapeutic targets to delay or prevent the onset of OA among subsets of adults with these features. We examined if serum concentrations of glucose homeostasis (glucose, glycated serum protein [GSP]) or inflammation (C-reactive protein [CRP]) were associated with prevalent knee bone marrow lesions (BMLs) or effusion among adults without knee OA. METHODS We conducted a cross-sectional study using baseline data from the Osteoarthritis Initiative. We selected participants who had no radiographic knee OA but were at high risk for knee OA. Blinded staff conducted assays for CRP, GSP, and glucose. Readers segmented BML volume and effusion using semi-automated programs. Our outcomes were prevalent BML (knee with a BML volume > 1 cm3) and effusion (knee with an effusion volume > 7.5 cm3). We used logistic regression models with CRP, GSP, or glucose concentrations as the predictors. We adjusted for age, sex, body mass index (BMI), and Physical Activity Scale for the Elderly (PASE) scores. RESULTS We included 343 participants: mean age = 59 ± 9 years, BMI = 27.9 ± 4.5 kg/m2, PASE score = 171 ± 82, and 64% female. Only CRP was associated with BML prevalence (odds ratio [OR] = 1.43, 95% confidence interval [CI] = 1.09 to 1.87). For effusion, we found an interaction between BMI and CRP: only among adults with a BMI <25 kg/m2 was there a significant trend towards a positive association between CRP and effusion (OR = 1.40, 95% CI = 1.00 to 1.97). We detected a U-shaped relationship between GSP and effusion prevalence. Fasting glucose levels were not significantly associated with the presence of baseline effusion or BML. CONCLUSIONS Among individuals without knee OA, CRP may be related to the presence of BMLs and effusion among normal weight individuals. Abnormal GSP may be associated with effusion. Future studies should explore whether inflammation and glucose homeostasis are predictive of symptomatic knee OA.