Is handgrip strength a marker of muscle and physical function of the lower limbs? Sex differences in older adults with obesity

Effects on older adult Women's precision, strength and flexibility from resistance training and handicrafts practice

INTRODUCTION

As individuals age, they experience a gradual decline in strength, flexibility, and precision control. While resistance training has shown positive effects on aging, little is known about how beneficial handicrafts could be in effectively promoting motor improvements in aging. This study aimed to compare manual precision, manual grip strength, and upper limb flexibility among three groups of older adult women: (a) regular practitioners of resistance training, (b) regular practitioners of handicrafts, and (c) insufficiently active participants who did not engage in either regular resistance training or handicraft practice.

METHODS

A total of 30 women (mean age = 67.86, SD = 7.01) were divided equally into the three groups (n = 10 per group). The participants were asked to perform a manual manipulative precision test, a manual grip strength test, and an upper limb flexibility test.

RESULTS

The participants in the resistance training group exhibited superior precision and strength compared to those in the handicraft group, as well as better precision, strength, and flexibility compared to the control group participants. The handicraft group demonstrated better precision and upper limb flexibility compared to the control group.

CONCLUSION

Therefore, while resistance training was particularly beneficial for improving these motor skills, engaging in handicrafts also proved to be an effective means of maintaining and/or enhancing certain important motor abilities.

Low handgrip strength is associated with falls after the age of 50: findings from the Brazilian longitudinal study of aging (ELSI-Brazil)

AIM

This study examined the association of low handgrip strength (HGS) for falls in middle-aged adults and older adults every half-decade of life.

METHODS

This cross-sectional study was conducted using the public data from the first wave of the Brazilian Longitudinal Study of Aging (ELSI-Brazil). The participants were allocated into seven age groups 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, and ≥ 80 years. Binary logistic regression analysis was performed to identify the odds ratio (OR) of low HGS to the falls regardless of confounding variables such as sex, balance, gait speed, and total number of health conditions.

RESULTS

A total of 8,112 participants aged 50-105 years (median = 62.0 years): 3,490 males (median = 60.0 years) and 4,622 females (median = 63.0 years) attended the study. Altogether, 21.5% of participants experienced at least one fall. HGS gradually decreases over each half-decade of life. In addition, low HGS presented a significative OR (p < 0.05) for falls for age groups, until 80 s, even when considering confounding variables.

CONCLUSIONS

Low HGS is associated with falls in middle-aged adults over their 50 s and remained a strong measure of falls across each subsequent half-decade of life, until 80 s.

Analysis of sarcopenic obesity prevalence and diagnostic agreement according to the 2022 ESPEN and EASO Consensus in hospitalized older adults with severe obesity

Background

Sarcopenic obesity (SO) is a clinical disorder characterized by increased adiposity and decreased muscle mass and function, commonly observed in older adults. However, most of the studies that investigated SO prevalence rates were not based on current standardized diagnostic methods. Thus, this study aims to estimate the prevalence rates of SO and their level of agreement using different instruments proposed by the European Society for Clinical Nutrition and Metabolism (ESPEN) and the European Association for the Study of Obesity (EASO) Consensus, in a sample of hospitalized older adults with severe obesity.

Methods

A cross-sectional study with 90 older adults (≥ 60 years) with severe obesity (body mass index ≥ 35 kg/m/²) seeking an in-hospital multidisciplinary body weight reduction program. Skeletal muscle function was assessed using the five-repetition Sit-Stand test (5-SSt) and Handgrip Strength (HGS). Body composition was evaluated by high percentages of fat mass (FM), low appendicular lean mass (ALM/W), and skeletal muscle mass (SMM/W), adjusted to body weight. The stage of SO was assessed on the presence of at least one comorbidity and specific cut-offs were adopted for each step. All analyses were performed according to gender and age range.

Results

The prevalence rates of SO in the total sample were 23.3%, 25.5%, 31.1%, and 40.0% considering altered values of 5-SSt+FM+ALM/W, HGS+FM+ALM/W, 5-SSt+FMSSM/W, and HGS+FM+SSM/W, respectively. Higher prevalence rates were observed among female and old elderly subgroups, regardless of the diagnostic combination. There were weak agreements between the muscle function tests (5-SSt versus HGS) using both muscle mass indexes in the total sample and all subgroups. Moderate agreements were observed between muscle mass indexes (SMM/W versus ALM/W) in the total sample, male and younger older adults (using 5-SSt), and strong agreements for men and younger older adults (using HGS).

Conclusion

The discrepancies observed between the prevalence rates and their levels of agreement reinforce the need for new studies in similar populations aiming for better standardization of SO assessment.

Longitudinal association of grip strength with cardiovascular and all-cause mortality in older urban Lithuanian population

BACKGROUND

Ageing populations experience greater risks associated with health and survival. It increases the relevance of identifying variables associated with mortality. Grip strength (GS) has been identified as an important biomarker for all cause and cardiovascular mortality, however, its prognostic value has not been studied in Lithuania. The aim of the present study is to evaluate the relationship of GS to vital status in a representative sample of the Lithuanian 45-72-year-old urban population during the period of 12 years of follow-up and to explore associations of GS with all-cause mortality and mortality from cardiovascular diseases (CVD).

METHODS

Within the framework of the international study Health, Alcohol and Psychosocial Factors in Eastern Europe (HAPIEE) 7,115 men and women 45-72 years of age were examined in the baseline survey (2006 to 2008). Data from the Official Lithuanian Mortality Register were used to evaluate CVD and all-cause mortality from follow-up till 2020. Cox proportional hazards regression was used, and four models for all-cause and CVD mortality were assessed.

RESULTS

The mean GS was significantly higher among survivors' men and women as compared to individuals deceased from CVD and other causes of death. In survivor men and women groups, minimal values of GS in all terciles were higher as compared to all three deceased groups. In both men and women groups, the lowest GS (1st tercile) was associated with a significantly higher risk of all-cause and CVD mortality as compared to the highest levels of GS (3rd tercile) in three Cox regression models. In both men and women were found to have a 1.34- and 1.35-fold higher risk of all-cause mortality, respectively, at lower GS, but no significant difference in the risk of CVD mortality. When GS was treated in all models as decrement per 1 kg and decrement per 1 SD, in both men and women, the risk of all-cause mortality significantly increased with decreasing of GS.

CONCLUSIONS

The mean GS was significantly higher among survivors' men and women as compared to deceased from CVD and other causes of death. Risk of all-cause mortality significantly increased with decreasing of GS.

Examining factors contributing to the socioeconomic inequalities in handgrip strength among older adults in India: a decomposition analysis

The purpose of this study was to examine (a) the socioeconomic status (SES)-related inequalities associated with handgrip strength (HGS); and (b) the extent to which several demographic, health, and behavioral factors contributed to such SES disparities in HGS among older adults in India. Data were drawn from the 2017-2018 wave 1 of the Longitudinal Ageing Study of India (LASI). The study sample included 27,707 older adults (13,199 men and 14,508 women) aged 60 years and older. HGS was assessed using a handheld Smedley's Hand Dynamometer with a cut-off of 19.5 kg for men and 12.5 kg for women. Bivariate analysis showed the weighted percentage distribution of weak HGS across respondent characteristics. Multivariate logistic regression assessed factors linked to weak HGS. The concentration curve and index (CCI) was used to determine the inequalities in the prevalence of weak HGS by wealth index scores. Wagstaff's decomposition approach was used to test the contribution of each explanatory variable to weak HGS. Around 9% of older adults in this study reported a weak HGS. It was significantly higher among those aged 80 or older (19.21%) and males (15.55%). Weak HGS was concentrated among older adults from poor SES (CCI: 0.05, p < 0.001). A higher percentage of wealth-based inequality in weak HGS was explained by being underweight (38.83%), belonging to the richest wealth quintile (27.95%), and having a higher subjective social status (32.20%). Moreover, about 23.29% of the inequality in weak HGS was explained by Western region and 22.54% by female gender. Additionally, having a secondary level of education explained a higher percentage (22.09%) of inequality, followed by current working status (- 20.68%). Rural residence (13.08%), limitations in instrumental activities of daily living (IADL) (12.21%), and engagement in yoga-related activities (11.55%) explained a higher percentage of wealth-based inequalities. The findings provide evidence of significant SES-related inequalities in HGS and the contribution of various demographic, health, and behavioral factors to such inequality. As such, public health policies and programs focusing on reducing the burden of disability must consider the contribution of social and economic equity to the preservation of muscle strength among older adults.

Functional status and quality of life in post-COVID-19 patients two to three weeks after hospitalization: A cross-sectional study

Background and Aims

Extended hospitalization due to coronavirus disease 2019 (COVID-19) is associated with residual musculoskeletal and functional deficits lasting even 6 months after discharge; therefore, it is crucial that post-hospitalized patients are promptly assessed. The aim of this study was to identify post-COVID-19 patients' functional status and quality of life, as well as to investigate their inter-relatedness 2-3 weeks after hospital discharge.

Methods

The study included 39 post-COVID-19 patients previously hospitalized in the Clinic for Infectious Diseases at the University Clinical Center of Kosovo (UCCK) from August to December 2021. Physiotherapeutic assessment encompassed socio-demographic and clinical data including Short Physical Performance Battery (SPPB) for physical functional performance, hand grip strength, 6-min Walk Test (6MWT) for aerobic capacity and endurance, EuroQol 5-Dimension 5-Level (EQ-5D-5L) for quality of life, Visual Analogue Scale (VAS) for pain, Borg CR10 for dyspnea, peripheral oxygen saturation and heart rate. Descriptive statistics, Pearson correlation, and multiple linear regression analysis were utilized for data processing.

Results

The median (interquartile range [IQR]) for Borg CR10, VAS pain scale, total SPPB, grip strength, and 6MWT were 1 (0-3), 3 (1-6), 9 (8-10), 30.5 (23.2-43.5) kg, 344.5 (312.7-381.7) m respectively, while the mean (SD) for EQ-5D-5L index value was 0.7 (0.2). The strongest and most significant correlation was depicted between SPPB total score and its subscales, followed by correlation with EQ-5D-5L (r = 0.719, p < 0.001), grip strength (r = 0.612 p < 0.001), Borg CR10 (r = -0.515, p = 0.001), 6MWT (r = 0.416, p = 0.02), and VAS scale (r = -0.343, p = 0.03). Using the multiple regression analysis, the grip strength, Borg-CR10, and 6MWT were found to be strongly predictive of SPPB total score.

Conclusion

In post-COVID-19 patients' functional status and quality of life were impaired 2-3 weeks following hospitalization. SPPB showed the most frequent and significant correlation with other variables, hence it should be considered as one of the primary screening tools.

Sex differences in musculoskeletal injury and disease risks across the lifespan: Are there unique subsets of females at higher risk than males for these conditions at distinct stages of the life cycle?

Sex differences have been reported for diseases of the musculoskeletal system (MSK) as well as the risk for injuries to tissues of the MSK system. For females, some of these occur prior to the onset of puberty, following the onset of puberty, and following the onset of menopause. Therefore, they can occur across the lifespan. While some conditions are related to immune dysfunction, others are associated with specific tissues of the MSK more directly. Based on this life spectrum of sex differences in both risk for injury and onset of diseases, a role for sex hormones in the initiation and progression of this risk is somewhat variable. Sex hormone receptor expression and functioning can also vary with life events such as the menstrual cycle in females, with different tissues being affected. Furthermore, some sex hormone receptors can affect gene expression independent of sex hormones and some transitional events such as puberty are accompanied by epigenetic alterations that can further lead to sex differences in MSK gene regulation. Some of the sex differences in injury risk and the post-menopausal disease risk may be "imprinted" in the genomes of females and males during development and sex hormones and their consequences only modulators of such risks later in life as the sex hormone milieu changes. The purpose of this review is to discuss some of the relevant conditions associated with sex differences in risks for loss of MSK tissue integrity across the lifespan, and further discuss several of the implications of their variable relationship with sex hormones, their receptors and life events.