Effects of physical activity on bone mineral density in older adults: Korea National Health and Nutrition Examination Survey, 2008-2011

The association between total volume and intensity of moderate-to-vigorous physical activity and incidence of osteoporosis

It is unclear whether moderate-to-vigorous physical activity (MVPA) and its proportion by vigorous physical activities (VPA) would decrease the risk of osteoporosis. This study aimed to examine a dose-response association between MVPA, VPA ratio, and incident osteoporosis in a large prospective cohort. We conducted a longitudinal analysis using data on MVPA, VPA, and osteoporosis from the UK Biobank prospective cohort study. A total of 368,553 eligible participants were included at baseline. Cox proportional hazard models were used to explore the association of MVPA and VPA with the incidence of osteoporosis for men and women, and trend tests were applied to assess the dose-response relationship between them. During a median follow-up of 12.56 years, 11,788 incident cases of osteoporosis (2016 in men and 9772 in women) were identified. The multivariate-adjusted HR (95%CI) of osteoporosis in the highest compared with lowest quartile of MVPA was 0.61 (0.54-0.69); P-trend < 0.001 for men and 0.84 (0.79-0.89); P-trend < 0.001 for women. In the analyses of proportions of VPA and the risk of osteoporosis, the highest tertile of VPA proportion was associated with the lowest risk of osteoporosis with a HR (95%CI) of 0.74 (0.63-0.86); P-trend < 0.001 for men and 0.80 (0.75-0.86); P-trend < 0.001 for women. A higher MVPA and VPA proportion were associated with decreasing osteoporosis risk in a dose-response manner, respectively, among British aged between 37 and 73 years.

Does higher serum 25-hydroxyvitamin D levels will harm bone mineral density?: a cross-sectional study

OBJECTIVE

Vitamin D plays a critical role in the prevention and management of osteoporosis. However, there is an ongoing debate regarding the most effective vitamin D supplementation strategies for maintaining optimal bone mineral density (BMD) levels in adults. This study sought to establish the correlation between serum 25-hydroxyvitamin D [25(OH)D] levels and total BMD in a substantial population sample.

METHODS

Data from the National Health and Nutrition Examination Survey (NHANES) for the 2011-2018 cycles, encompassing 11,375 adult participants, were analyzed. The primary variables of interest were serum 25(OH)D levels and BMD. A multivariable logistic regression model was utilized to account for relevant variables associated with these correlations.

RESULTS

A U-shaped relationship between serum 25(OH)D levels and BMD was observed. In males, a significant positive association was identified for 25(OH)D levels below 84.8 nmol/L (p < 0.0001), while levels above this threshold showed no significant correlation (p = 0.3377). In females, those with 25(OH)D levels below 31.4 nmol/L exhibited a significant positive association with BMD (p = 0.0010), but this association weakened and became marginally significant above this threshold (p = 0.0650).

CONCLUSIONS

For adult males, the optimal serum 25(OH)D level is 84.8 nmol/L, beyond which higher levels do not lead to increased BMD. A deficiency threshold for adult females should be above 31.4 nmol/L, as lower 25(OH)D levels are not conducive to BMD. These findings underscore the importance of maintaining appropriate vitamin D levels for bone health in both genders.

More Movement, Less Bodily Pain? Findings From a Large, Representative Multi-District Aging Study in Ghana

OBJECTIVE

The association of physical activity (PA) with pain has been characterized. Although the literature largely comes from high-income countries, the mechanistic pathways underlying this association remain unknown, particularly in low- and middle-income countries (LMICs). We aim to examine the association between meeting the World Health Organization (WHO) PA guidelines and pain among aging adults and identify the factors that may mediate this association.

DESIGN

We used a quantitative cross-sectional study design.

SETTING AND PARTICIPANTS

Representative data from adults aged ≥50 years who participated in the Aging, Health, Psychological Well-being, and Health-seeking Behavior Study were used.

METHODS

PA was defined using the International Physical Activity Questionnaire (IPAQ). Self-reported pain experience using a cross-culturally validated item over the past month assessed pain severity. Adjusted multivariable ordinal logistic regression and mediation models quantified the hypothesized associations.

RESULTS

The analysis included 1201 adults (mean 66.1 ± 11.9 years; 63.3% female). After adjusting for confounders, adhering to the WHO-recommended PA guidelines was associated with 42% lower odds for severe/extreme pain [odds ratio (OR) 0.58, 95% CI 0.44-0.77]. The association was much stronger among men (OR 0.52, 95% CI 0.31-0.85) than women (OR 0.60, 95% CI 0.42-0.87). The PA-pain association was explained by functional limitations (84.7%), self-rated health (76.6%), sleep problems (20.4%), and injury (6.6%).

CONCLUSIONS AND IMPLICATIONS

Moving more was associated with less pain in older adults from LMICs. Interventions for pain management in old age may focus on enhancing compliance with PA doses, particularly in LMICs. However, longitudinal data will need to confirm these findings.

Association between physical activity, sedentary behavior patterns with bone health among Chinese older women

INTRODUCTION

We examined the association between physical activity (PA) and sedentary behavior (SEB) time with bone health and whether it changes depending on different patterns.

MATERIALS AND METHODS

Cross-sectional data were derived from the baseline of the Physical Activity and Health in Older Women Study. PA and SEB were measured using Actigraph wGT3X-BT accelerometers. Bone mineral density (BMD) was derived from the SONOST-2000 ultrasound bone densitometer, with unhealthy bone defined as a BMD T-score of <2.5 standard deviation a young adult reference population's mean. A 10 min-bouted SEB was defined as an SEB duration of >10 min (allow 2 min 0 counts), similar to 30 min-bouted and 60 min-bouted SEBs. Sporadic and bouted PAs were defined by PA duration of <10 min or ≥ 10 min. Multivariate logistic regression analysis investigated the associations between PA and SEB patterns with bone health.

RESULTS

Among 1111 female participants, 42.12 % had unhealthy bones. In a fully-adjusted model, increasing 30 min/day of SEB was associated with a higher odds ratio (OR) for an unhealthy bone (OR, 1.08; P = 0.005), similar to the 10 (OR, 1.06; P = 0.012), 30 (OR, 1.06; P = 0.043), and 60 min-bouted (OR 1.08, P = 0.032) SEBs. Total light PA (LPA) time (OR, 0.97; P = 0.005) had a lower OR for unhealthy bone. After adjusting for sporadic LPA time, bouted LPA (OR, 0.97; P = 0.005) retained this association. No association was observed between total moderate-to-vigorous PA (MVPA) and bone health, sporadic MVPA, and bouted MVPA.

CONCLUSIONS

Performing bouted LPA and reducing 10 min-bouted SEB may maintain bone health.

Bodily Pain in Physical Function and the Role of Physical Activity Among Community-Dwelling Adults Aged 50-69 Years in Ghana

BACKGROUND

Older adults who experience pain are likely to report higher functional limitations (FL) and lower physical activity (PA) levels. However, the extent to which PA explains the association of pain with FL is largely unknown, particularly in low- and middle-income countries. This study estimates whether and how much pain in FL is mediated by PA engagement.

METHODS

We used cross-sectional data from 770 adults aged 50-69 years who participated in the Aging, Health, Psychological Well-being, and Health-seeking Behavior Study in Ghana. FL and pain characteristics were defined using the Medical Outcomes Study Short Form-36. PA was assessed by the International Physical Activity Questionnaire-Short Form. Bootstrapped mediation analyses estimated the direct and indirect hypothesized associations. The control variables included age, sex, residential type, level of education, monthly income, social isolation, emotional distress, multimorbidity, and self-rated health.

RESULTS

After adjusting for potential confounders, higher pain interference (β = 0.091, p < .05) and higher pain severity (β = 0.075, p < .05) were associated with greater FL. The bootstrapping analyses showed that PA mediated the pain interference-FL association, accounting for approximately 58% (β = 0.124, Boots 95% confidence interval (CI): 0.078-0.175) of the total effect (β = 0.215, Boots 95% CI: 0.095-0.335). Similarly, PA mediated the association between pain severity with FL, accounting for approximately 37% (β = 0.044, Boots 95% CI: 0.001-0.094) of the overall effect (β = 0.119, Boots 95% CI: -0.011 to 0.249).

CONCLUSIONS

Our data suggest that the higher pain severity and pain interference may lead to higher FL in middle and old age, and the associations are partially explained by PA. Effective and low-cost PA participation could be targeted in efforts to reduce the effect of pain on physical functioning among middle-aged and older adults.

Lower bone mineral density can be a risk for an enlarging bone marrow lesion: A longitudinal cohort study of Japanese women without radiographic knee osteoarthritis

OBJECTIVES

The aim is to elucidate the relationship between bone mineral density (BMD) at baseline and the change of bone marrow lesion (BML) during a 2-year follow-up (2YFU) period.

METHODS

Seventy-eight female participants (mean age: 54.9 ± 9.6 years) without radiographic knee osteoarthritis were eligible. Based on right-knee magnetic resonance imaging, maximum BML area (BMLa) was calculated by tracing the BML border. The change in BMLa was defined using the following formula: [2YFU] - [Baseline] = ΔBMLa. Positive ΔBMLa was defined as enlarged; negative ΔBMLa was defined as regressed. Dual-energy X-ray absorptiometry was performed to measure the BMD of distal radius. Young adult mean [YAM (%)] of the BMD was used for statistical analysis. Linear regression analysis was conducted with ΔBMLa as the dependent variable and YAM as the independent variable. Receiver operating characteristic curve and logistic regression analyses were conducted for YAM to predict the prevalence of BML enlargement or regression.

RESULTS

Twenty-six (33.3%) patients had enlarged BMLa, 12 (15.4%) participants showed regressing BMLa, and 40 (51.3%) patients remained stable. YAM was negatively associated with ΔBMLa (β: - 0.375, P = 0.046). The best predictor of BML enlargement risk was 85% (odds ratio: 8.383, P = 0.025).

CONCLUSIONS

Lower BMD could predict BML enlargement during a 2YFU period.

Association between physical activity and bone mineral density in postmenopausal women: a cross-sectional study from the NHANES 2007-2018

BACKGROUND

Physical activity (PA) is generally encouraged for the treatment of osteoporosis. However, epidemiological statistics on the level of physical activity required for bone health are scarce. The purpose of this research was to analyze the association between PA and total spine bone mineral density (BMD) in postmenopausal women.

METHODS

The research study included postmenopausal women aged ≥ 50 from the National Health and Nutrition Examination Survey. The metabolic equivalent (MET), weekly frequency, and duration of each activity were used to calculate PA. Furthermore, the correlations between BMD and PA were investigated by multivariable weighted logistic regression.

RESULTS

Eventually, 1681 postmenopausal women were included, with a weighted mean age of 62.27 ± 8.18 years. This study found that performing ≥ 38MET-h/wk was linked to a lower risk of osteoporosis after controlling for several covariates. Furthermore, the subgroup analysis revealed that the connection between total spine BMD and moderate-to-vigorous PA was more obvious among postmenopausal women aged < 65 years or individuals with normal BMI (< 25 kg/m²).

CONCLUSION

Physical activity ranging from moderate to vigorous was linked to higher total spine BMD in postmenopausal women.

Correlation between sedentary activity, physical activity and bone mineral density and fat in America: National Health and Nutrition Examination Survey, 2011-2018

We compared the relationship between sedentary activity (SA) and physical activity (PA) with bone mineral density (BMD) and body fat percentage in the United States and found a negative association between SA and BMD and a positive association with body fat percentage. A positive association between PA and BMD and a negative association with body fat percentage. SA and PA are associated with changes in skeletal parameters and body fat percentage, and we aimed to investigate and compare the relationship between SA, PA and bone mineral density (BMD) and body fat percentage in men and women. We assessed the relationship between SA, PA and BMD and body fat percentage in 9787 Americans aged 20-59 years (mean age 38.28 ± 11.39 years) from NHANES 2011-2018. BMD and body fat percentage were measured by dual-energy X-ray bone densitometry (DXA). We used multiple linear regression models to examine the relationships between SA, PA and lumbar spine BMD and total body fat percentage, adjusted for a large number of confounding factors. After adjusting for race/ethnicity, age, alcohol and smoking behavior, body mass index (BMI), total protein, blood calcium, blood uric acid, cholesterol, blood phosphorus, vitamin D, and blood urea nitrogen, SA was negatively associated with lumbar spine BMD (β = - 0.0011 95% CI - 0.0020 to - 0.0002, P = 0.022), and SA was positively associated with total fat percentage (β = PA was positively associated with lumbar BMD (β = 0.0046 95% CI 0.0010 to 0.0082, P = 0.012) and there was a negative association between PA and body fat percentage (β = - 1.177 95% CI - 1.326 to -1.027, P < 0.001). Our results show that physical activity is a key component of maintaining bone health in both men and women and is strongly associated with lower body fat percentages. Sedentary activity is negatively correlated with bone density and is strongly associated with an increase in body fat percentage. Healthcare policy makers should consider reducing sedentary activity and increasing physical activity when preventing osteoporosis and obesity.

The association of opioid consumption and osteoporosis in old men: Bushehr Elderly Health (BEH) program

In a population of 1156 men aged ≥ 60 years, opioid drug use was reported by 4.1% (n = 47) of participants. Among opioids, opium was the most prevalent consuming drug (83%). Adjusting for potential confounders, opioid consumption showed a positive association with osteoporosis.

PURPOSE

Limited evidence suggest a relationship between opioid consumption and osteoporosis. This study aims to investigate the possible association of osteoporosis and drug use among older adult men of Bushehr, Iran.

METHODS

In this study, 1156 men aged ≥ 60 years of Bushehr Elderly Health (BEH) were included. Bone density and trabecular bone score (TBS) were measured using dual-energy X-ray absorptiometry. Total osteoporosis was noted based on osteoporosis at either site of the lumbar spine, femoral neck, and total hip densitometry. Drug use was defined as a self-reported current use of opioid drugs, either regular (daily) use or irregular consumption. Multivariable modified Poisson regression analysis was used for investigating the association of opioids and osteoporosis, reporting the adjusted prevalence ratio (APR) with 95% confidence interval (CI). The association between drug use and TBS was evaluated using a linear regression model.

RESULTS

Opioid drug use was reported by 4.1% (n = 47) of participants. Among drug users, opium was the most prevalent consuming drug (83%). In all, 38.3% of drug users and 22.4% of non-users had osteoporosis (p-value = 0.011). Multivariable analysis showed that adjusting by age, education, smoking, alcohol consumption, body mass index, diabetes, and physical activity, a positive and significant association was detected between opioid drug use and the likelihood of osteoporosis (APR: 1.46, 95%CI: 1.02-2.10). Considering the potential confounders, the results also showed a negative association between drug consumption and TBS (β: - 0.027, 95%CI: - 0.053, - 0.001).

CONCLUSION

Opioid drug use has a positive association with osteoporosis in elderly men, independent of other conventional risk factors. Elderly drug users might be at a higher risk for osteoporotic fractures, given the effect of substance use on cognition. So, osteoporosis among drug users would be of importance, especially in countries where opium consumption is prevalent.

Association of Exercise Intensity with the Prevalence of Glaucoma and Intraocular Pressure in Men: A Study Based on the Korea National Health and Nutrition Examination Survey

Adequate exercise is essential for maintaining a healthy lifestyle and preventing ageing-related diseases. The purpose of this study was to assess the associations between exercise and glaucoma, as well as exercise and intraocular pressure (IOP) levels. This study used data from the Korea National Health and Nutrition Examination Surveys 2008–2012, which in total included 10,243 men aged ≥40 years. The presence of glaucoma and the higher IOP of each eye (IOPmax) taken from the health examination survey and the ophthalmic examination were used for analyses. A questionnaire was used to assess exercise activity, which was analysed regarding intensity, frequency, and duration. Regression analyses were used to determine the relationships of exercise parameters with the odds of glaucoma and IOPmax. The prevalence of glaucoma was significantly lower in men who engaged in moderate-to-vigorous intensity exercise compared to those who did not exercise (p = 0.012). The odds for glaucoma were the lowest in men engaged in vigorous intensity exercise (p = 0.009). However, IOPmax was highest in the vigorous intensity exercise group (p = 0.026) with no linear trend pattern. These results suggest that exercise decreased the odds of glaucoma via several factors including non-IOP mechanisms.

The effect-modification of physical activity on the association of pain with impaired physical function in aging adults

OBJECTIVES

Pain is prevalent among older adults and may result in impairment in physical function. However, little is known about the effect-modification of this relationship by physical activity (PA) participation. This large and representative study sought to estimate the effect of pain on physical function among older adults in Ghana and evaluate whether PA modifies this association.

METHODS

Data came from 1201 adults aged ≥50 years participating in the AgeHeaPsyWel-HeaSeeB Study in Ghana. Pain constructs were defined using the Medical Outcomes Study Short Form-36 (MOS SF-36). PA was assessed using the International Physical Activity Questionnaire short form (IPAQ-SF) and physical function impairment was measured by seven-item domains based on the activities of daily living (ADL) and instrumental ADL (IADL). Adjusted hierarchical OLS regressions were fitted to estimate the direct and moderating relationships between pain facets, PA, and impaired physical function.

RESULTS

The relationships of pain severity (β = 0.348, p < .001), and pain interference (β = 0.424, p < .001) with impaired physical function were robust after full adjustment for confounding variables. Persons with pain experiences had significantly increased impaired physical function risks. PA significantly modified the association between pain severity (β = -0.232, p < .001) and pain interference (β = -0.143, p < .001) with impaired physical function.

CONCLUSIONS

Our data indicate that the relationships of pain with physical function impairment are modified by PA intensity. Future studies are warranted to understand the indirect effect of pain on functional limitations and how PA promotion could manage pain and improve functional ability in aging adults.

Association of physical activity with sarcopenia evaluated based on muscle mass and strength in older adults: 2008-2011 and 2014 - 2018 Korea National Health and Nutrition Examination Surveys

Background

Adequate physical activity (PA) is essential for preventing sarcopenia in older adults. However, there are insufficient epidemiological data on the intensity of PA needed to prevent age-related sarcopenia. The purpose of this study was to investigate the association of PA intensity with skeletal muscle mass and muscle strength.

Methods

This was a population-based study with a cross-sectional design that was conducted using data from the 2008 − 2011 and 2014 − 2018 Korea National Health and Nutrition Examination Surveys, which included a total of 11,162 participants aged ≥ 60 years. PA was assessed using the results of a questionnaire and organized by intensity, frequency, and duration. The study population was divided into the following groups based on PA intensity: no exercise, walking only, moderate PA, and vigorous PA. To assess sarcopenia, skeletal muscle index (SMI) and hand grip strength (HGS) were measured as indicators of muscle mass and strength, respectively. Logistic regression analysis was used to explore the relationship between PA intensity and sarcopenia.

Results

SMI and HGS were significantly higher in men and women engaged in moderate to vigorous PA than in those who did not exercise. The odds ratios (ORs) for sarcopenia defined based on SMI and HGS were lowest in men engaged in vigorous PA (0.444, 95% confidence interval [CI]: 0.242 − 0.818 and 0.450, 95% CI: 0.228 − 0.890, respectively). In women, the OR for sarcopenia defined based on HGS was the lowest in the group engaged in vigorous PA (0.441, 95% CI: 0.199 − 0.975), while there was no risk reduction for sarcopenia defined based on SMI.

Conclusions

Moderate to vigorous PA was highly correlated with SMI and HGS in men and women. Intensive PA was positively correlated with sarcopenia prevention, which can be monitored using HGS.

Association of physical activity levels and prevalence of major degenerative diseases: Evidence from the national health and nutrition examination survey (NHANES) 1999-2018

OBJECTIVES

Degenerative diseases are associated with lower healthy life expectancy and higher mortality. Physical activity (PA) has demonstrated a fundamental role in the prevention and control of several pathologies associated to the aging process. The aim of this study was to analyze the association of PA with the prevalence of sarcopenia, osteoporosis and osteoarthritis in non-institutionalized American population.

METHODS

Cross-sectional study carried out in participants aged ≥50 years from the 1999-2018 National Health and Nutrition Examination Survey (NHANES). Sarcopenia was defined using appendicular lean mass adjusted for body mass index (ALM:BMI; men <0.789 kg/m², women <0.512 kg/m²). Osteoporosis was defined as bone mineral density T-score ≤-2.5 of femur neck. Osteoarthritis and PA were self-reported, and total PA was used to classify participants in groups. The Odds Ratios among the different PA levels for each disease were examined.

RESULTS

Performing at least 150 MET-min/week of PA was associated with reduced odds for sarcopenia; performing >1800 MET-min/week was associated with reduced odds for osteoporosis; and performing 150-1800 MET-min/week of PA was associated with reduced odds for osteoarthritis after adjust the results by several confounders.

CONCLUSIONS

The benefits of PA in sarcopenia, osteoporosis, and osteoarthritis prevention are evident among Americans aged ≥50 years.

Association of Sun-Protective Behaviors With Bone Mineral Density and Osteoporotic Bone Fractures in US Adults

Importance

Despite the reassuring emerging evidence on the lack of a causal relationship between sun protection and vitamin D deficiency, there is scarce data on whether multimodal sun protection is associated with reduced bone mineral density (BMD) and/or increased prevalence of osteoporotic bone fractures. This lack of data may lead to worry and decreased sun-protective behaviors on the part of patients.

Objective

To investigate the association of sun-protective behaviors with BMD z scores and the prevalence of osteoporotic fractures.

Design, Setting, and Participants

This population-based cross-sectional study included data from US adults who participated in the 2017 to 2018 cycle of the National Health and Nutrition Examination Survey (NHANES). Data were analyzed between September and November 2020.

Main Outcomes and Measures

Definition of sun-protective behaviors (staying in the shade, wearing long sleeves, and sunscreen use), site-specific and total BMD, and osteoporotic fractures (hip, wrist, and spine) in the NHANES data.

Results

Data from 3418 adults 20 years and older (average age, 39.5 [95% CI, 38.6-40.4] years; 1612 [47.2%] men and 1806 [52.9%] women) who completed the NHANES dermatology questionnaire were included in this study. The prevalence of frequent staying in the shade, wearing of long sleeves, and sunscreen use were 31.6% (95% CI, 27.8%-35.7%), 11.8% (95% CI, 10.6%-13.1%), and 26.1% (95% CI, 23.5%-28.8%), respectively. The use of individual sun-protective behaviors was not associated with diminished site-specific and total BMD z scores in the multivariate models (estimate, -0.23 [95% CI, -0.47 to 0.02], P = .18; -0.08 [-0.27 to 0.12], P = .72; and -0.10 [-0.32 to 0.13], P = .15 for frequent staying in the shade, wearing of long sleeves, and sunscreen use, respectively). Moderate to frequent staying in the shade was associated with reduced prevalence of spine fractures in the multivariate model (odds ratio, 0.19 [95% CI, 0.04-0.86], P = 0.02).

Conclusion and Relevance

In this cross-sectional study, routine use of sun-protective behaviors among the US adult population was not associated with decreased BMD or increased risk of osteoporotic fracture. Sun protection may be associated with a modest decrease in the prevalence of osteoporotic fractures, possibly owing to risk-averse behaviors. These reassuring findings add to the growing body of evidence on the safety of sun protection, with no considerable negative association with bone health.