Calf Circumference Measurement Research Articles

Assessment of physical fitness among people over 60 years of age

Introduction: An ageing of population is becoming more and more common. With age, the functionality and efficiency of the body decreases. As a result, the time spent by seniors on physical activity is shortened and physical fitness decreases. For this reason, the physical fitness of seniors should be regularly checked and they should be encouraged to take up physical activity. There are many proven and reliable tests used to assess physical fitness. Materials and methods: The study group consisted of 40 people (31 women and 9 men), aged 60-78 years. The tests used in following study were: the SPPB questionnaire, handgrip strength test, and arm and calf circumference measurements. An attempt was made to find sociodemographic factors that could influence the level of physical fitness. It was checked whether physical fitness and physical activity depend on age, gender and BMI. It was checked how much time older people spend on physical activity during the day and week. The study confirmed that physical fitness decreases with age. Results: Tests and interviews have shown that people who spend more than 60 minutes a day on physical activity achieve higher scores on the SPPB questionnaire. These results were applicable to both women and men. Studies in a larger and more diverse population would need to be repeated in order to further confirm these results and draw more conclusions.

The Predictive and Prognostic Value of Percentage Change in Calf Circumference in Infants and Children During the First Week of Admission in the Pediatric Intensive Care Unit: A Prospective Cohort Study.

Calf circumference (CC) is an easy measure of muscle loss; yet, there are limited studies in children. We aimed to assess the viability of the first-week percent change in CC as a prognostic nutritional marker. Two MUAC (mid-upper arm circumference), CC, and weight measurements were carried out: one on the first day of admission and another on the seventh day. The differences and correlations between their percent changes were examined. The possible association between CC percent change and prolonged length of hospital stay (PLOS) and in-hospital mortality was assessed. Seventy participants were enrolled with a median age of 19.5 months. The median (interquartile range [IQR]) of CC percent change was 0.54 (5.5) with significant correlations between it and each of MUAC and weight percent change (ρ = 0.928, P = .001), (ρ = 0.902, P = .001), respectively. Calf circumference percent changes were significantly more negative in children with PLOS; (P = .004). These changes seem to be viable measures of nutritional status.

Single-session mechanical thrombectomy for iliofemoral deep vein thrombosis using a dual mechanism of action device combining basket and rotational thrombectomy

ObjectiveInterventional treatments for acute iliofemoral deep vein thrombosis (DVT) remain controversial after publication of the Acute Venous Thrombosis: Thrombus Removal with Adjunctive Catheter-Directed Thrombolysis (ATTRACT) study. Interventions have been shown to reduce post-thrombotic syndrome severity and improve quality of life in DVT patients, but have been accompanied by risk of major bleeding from thrombolytics. We describe thrombus removal using a novel combined basket-rotational thrombectomy device that minimizes the need for thrombolytics or repeat procedures. MethodsThe aim of this prospective, nonrandomized, multicenter, first-in-human study of 19 patients with acute iliofemoral DVT was to evaluate the safety and performance of the Pounce venous thrombectomy system ≤12 months after treatment. The primary performance end point was defined as procedural success through achievement of Society of Interventional Radiology (SIR) grade II lysis in treated vessels with freedom from procedural adverse events. Secondary end points included venous disease severity assessments using the Villalta scale and the Venous Clinical Severity Score, patient quality-of-life measurement using the Venous Insufficiency Epidemiological and Economic Study-Quality of Life questionnaire, and calf circumference measurements taken at baseline, 24 hours, and 1 month. ResultsThe primary end point of complete or near-complete thrombus removal (Society of Interventional Radiology grade II or III) was achieved in all patients. All study device-related safety end points were met, with no major bleeding or device-related adverse events. Of the 19 patients treated, 16 (84.2%) did not receive thrombolytics during the procedure. Post-thrombotic syndrome (Villalta scale >4) was identified in 17 of 19 patients (89.5%) at baseline, 4 of 13 patients (30.8%) available for follow-up at 6 months, and 2 of 11 patients (18.2%) at 12 months. The median Venous Clinical Severity Score decreased (P < .001) from 8.5 (interquartile range [IQR], 7-10) at baseline to 4 (IQR, 2-4) at 1 month after the procedure and was similar at 6 months (2; IQR, 2-5) and 12 months (2; IQR, 1.5-3) after the procedure. The median Venous Insufficiency Epidemiological and Economic Study-Quality of Life questionnaire score improved (P < .001) by 39 from baseline (57; IQR, 53.5-74) to 1 month (96; IQR, 86-101) after the procedure, and remained high at 6 months (99; IQR, 75-103) and 12 months (98; IQR, 94.5-100). The median calf circumference decreased (P = .089) from 39 cm (IQR, 35-47.8 cm) at baseline to 36 cm (IQR, 32.5-40.5 cm) at 24 hours after the procedure and was 34.5 cm (IQR, 33.2-38.5 cm) at 1 month. ConclusionsThe Pounce device is safe and effective for removal the of thrombus in patients with acute iliofemoral DVT. Initial results demonstrate improvements in venous disease severity and patient quality of life.

Calf circumference as a surrogate indicator for detecting low muscle mass in hospitalized geriatric patients.

Sarcopenia is characterized by low muscle strength, decreased muscle mass, and decline in physical performance. While the measurements of muscle strength and physical performance are easy to perform, an accurate evaluation of muscle mass is technically more demanding. We therefore evaluated the suitability of calf circumference (CC) as a clinical indicator for muscle mass. In a cross-sectional single-centre study, geriatric inpatients were assessed for sarcopenia according to the European Working Group on Sarcopenia in Older People 2 (EWGSOP2) consensus. Calf circumference was tested for correlation with appendicular skeletal muscle mass index (ASMI). Receiver operating characteristic curves (ROC) were used to calculate the discriminatory value of the CC cut-off values to differentiate patients above and below ASMI cut-offs for sarcopenia. In this study population (n = 305, age 83.5 ± 7.0 years, BMI 25.7 kg/m2, 65.6% female), the prevalence of sarcopenia was 22.6%. In subjects with low ASMI, mean CC was 29.5 ± 3.4 cm for females and 32.0 ± 3.4 cm for males. A positive relationship between CC and ASMI was found. The optimized cut-off value for CC to identify patients with low ASMI was <31.5 cm for females (sensitivity 78%, specificity 79%), and <33.5 cm for males (sensitivity 71%, specificity 62%). In clinical settings where imaging technology for muscle mass quantification is not available, simple calf circumference measurement may be used as a dependable indicator for low muscle mass in older adults.

Alterations in muscle strength among patients with GI cancers receiving oral nutritional support as soon as malnutrition was detected: ONMUS study.

741 Background: The main goal of our multicenter study, focusing on patients with gastrointestinal (GI) cancers receiving nutritional support, was to monitor the alterations in muscle strength among individuals who began oral nutritional support (ONS) as soon as malnutrition was detected. Additionally, our study had secondary objectives, which included assessing the adherence to ONS, examining the impact of ONS on anthropometric measurements, analyzing chemotherapy compliance, and evaluating the overall quality of life. Methods: The ONMUS study was conducted at 8 centers in Turkey. The study aimed to involve patients with GI cancer who had used ONS for a minimum of 1 week and had an ECOG performance score of 0-1. Patients underwent evaluations by both a dietitian and an oncologist during the baseline visit, as well as at the 2nd and 3rd month visits. Various parameters, including age, gender, performance status, disease stage, treatment adherence, food consumption records, anthropometric measurements, muscle function measured with a handgrip device, and quality of life scales, were assessed. Results: The study comprised 426 patients. The median age was 62 years, with a range spanning from 19 to 90 years. Colorectal cancer was the primary diagnosis in 51% of the patients, while hepatobiliary, gastric, esophageal, and small bowel cancers accounted for 20.9%, 20.7%, 6.5%, and 1% of cases, respectively. A significant majority, 78.2% (n=319), of the patients were diagnosed at stage 4, and nearly all, 99.3% (n=411), were undergoing chemotherapy. Patients who adhered to ONS at or above 75% of the recommended usage were categorized as compliant. Among this group, there was a significant increase in body mass index ( P=0.005). Handgrip measurements for assessing muscle strength demonstrated a statistically significant increase, with handgrip weight rising from 24.9 ± 8.9 kg at the first visit to 26.1 ± 8.9 kg at the third visit ( P=0.009). ONS-compliant patients also showed statistically significant improvements in weight, total body water, basal metabolic rate, and calf circumference measurements. The proportion of ONS-compliant patients decreased from 80.5% (n=343) at the first visit to 62.4% (n=93) at the third visit. Additionally, a statistically significant improvement was observed in food consumption records ( P=0.004). In assessments using the EORTC QLQ-C30, there were significant improvements noted in general health status, fatigue, pain, and insomnia scales, as well as in physical, emotional, and social functioning. Furthermore, a significant difference was identified between visits 1 and 2 in PG-SGA scoring ( P&lt;0.001). Conclusions: ONS compliance is evident in the significant improvement observed in muscle strength, anthropometric measurements, and quality of life data. The importance of addressing malnutrition in patients with GI cancer cannot be overstated. Therefore, it is imperative to maintain regular monitoring of their nutritional status and adherence to ONS.

Yubi-Wakka Test for Sarcopenia Screening in the Community: Comparative Agreement, Diagnostic Performance and Validity with Calf Circumference Measurements.

Screening tools such as calf circumference (CC) and Yubi-wakka (finger-ring) test have been recognized as effective tools by Asian Working Group for Sarcopenia 2019 (AWGS'19) for sarcopenia screening but their comparative agreement, diagnostic performance and validity are unclear. This study aims to determine: (i)agreement between calf and finger-ring circumference, (ii)diagnostic performance for low muscle mass and AWGS'19 sarcopenia diagnosis, (iii)correlation with muscle mass, strength, and physical performance, and (iv)association with frailty, life space mobility and physical activity. We studied 187 healthy community-dwelling older adults (mean age=66.8+7.0years) from the GERILABS-2 study. CC was measured via (i) both calves in sitting and standing positions, and (ii) Yubi-wakka test by encircling the thickest part of the non-dominant calf with index fingers and thumbs of both hands. We performed Cohen's kappa to check for agreement, area under receiver operating characteristic curve (AUC) to compare diagnostic performance, partial correlations adjusted for age and gender to compare convergent validity, and logistic regression to determine predictive validity for outcome measures. Sarcopenia prevalence was 24.0% (AWGS'19). Yubi-wakka identified 16.6% of participants as screen-positive ("smaller"), showing moderate agreement only with non-dominant sitting CC measurements (k=0.421,p<0.001) and having lower diagnostic performance in determining low muscle mass (AUC=0.591 vs 0.855-0.870,p<0.001; sensitivity=57.1% vs 75.5-90.8%; specificity=58.4% vs 70.8-80.9%) and sarcopenia diagnosis (AUC=0.581 vs 0.788-0.818,p<0.001; sensitivity=55.6% vs 57.5-71.8%; specificity=74.4% vs 75.6-88.9%) compared to CC measurements. Yubi-wakka correlated significantly with muscle mass, grip strength and knee extension but not physical performance. When adjusted for age, gender and hypertension, Yubi-wakka was significantly associated with frailty (OR=3.96,95%CI:1.09-14.38), life space mobility (OR=2.38,95%CI:1.08-5.24) and physical activity (OR=2.50,95%CI:1.07-5.86). Yubi-wakka provides a self-administered, low-cost and practicable community screening tool for sarcopenia. Our study affirmed the convergent and predictive validity of Yubi-wakka, albeit with lower sensitivity and specificity in diagnostic performance compared to CC measurements.

Muscle mass evaluation in hospitalized patients: Comparison between doubly indirect methods

BackgroundLoss of muscle mass (MM) in hospitalized patients has been associated with negative outcomes, thus, evaluating this biomarker is important to stratify risk. Although studies have been showing that calf circumference (CC) and bioelectrical impedance analysis (BIA) are valid for estimating MM in hospitalized patients, we do not know if they are associated. The aim of this study was to evaluate the associations between CC and BIA in hospitalized patients Methods: A cross-sectional study, in hospitalized patients’ post-acute cardiac event. We collected sociodemographic, clinical, and anthropometric data. CC measurement was adjusted according to the BMI. Spearman’s correlations and associations between the methods were performed for the total sample, according to sex and stage of life (older adults or not). ResultsWe included 177 patients, mean age of 60.5 ± 12.4 years old, the majority males (75%). Median BMI was 26.2 kg/m2 (23.8-29.2 kg/m2), most of them overweight (41.8%). The median of CC was lower in females and older adults, and majority of the patients had low CC (87.6%). Higher values of fat-free mass (FFM) by BIA were observed in males and younger adults, and 5.6% presented low FFMI. We found a positive and moderate correlation between fat-free mass index (FFMI) and CC (rho = 0.532). Males had higher correlations (rho = 0.481). An increase of 1 kg in the FFM represented an increase of 1.16 cm (crude analysis) to 1.59 cm (adjusted analysis) in CC (p<0.001). FFM explained 37% in the variability of CC, and together with BMI, sex and age, explained 60% in the variability. ConclusionsRaw values of FFM obtained by BIA and CC presented a weak to moderate correlation in cardiac patients. Changes in one measure impact on the other one.

Concordance between changes in calf circumference and muscle mass exists: A narrative literature review

Technological methods such as BIA or DXA are not always accessible in clinical practice, thus GLIM supports the use of calf circumference measurements to examine muscle mass. However, it has not been described if measurements of calf circumference can detect a change in muscle mass to the same degree as the technological methods. The aim of this study was to assess, whether changes in calf circumference can be used as a valid proxy for changes in muscle mass. 10 studies including measurements of muscle mass by calf circumference and technological methods at baseline and follow-up were identified through a narrative literature review. Results were used to determine concordance between measurements. Predominantly concordance between changes in calf circumference and muscle mass assessed by BIA or DXA was reviled. However, the results were not uniform for hospitalized patients or older adults as groups. Thus, uncertainty whether changes in calf circumference can be used as a valid proxy for changes in muscle mass in these groups still exist.

Síndrome da Fragilidade e sarcopenia em idosos com e sem diabetes mellitus tipo 2 do município de Sinop, Mato Grosso: um estudo epidemiológico

Objective: to relate Frailty Syndrome and sarcopenia in older adults with and without type 2 diabetes mellitus and identify potential risk factors for frailty and sarcopenia. Method: this descriptive epidemiological study was conducted with 140 older adults in the municipality of Sinop, Mato Grosso, Brazil. The frailty phenotype was used for the assessment of Frailty Syndrome, and a physical assessment questionnaire with calf circumference measurement was used for the assessment of sarcopenia. Results: regarding Frailty Syndrome, a higher percentage was observed in older adults with type 2 diabetes mellitus compared to those without the disease (p = 0.00). Concerning the presence of sarcopenia, older adults with and without type 2 diabetes mellitus showed similar values, with no statistical significance (p = .74). Frailty Syndrome was associated with physical inactivity (95%CI: 3.29-56.55), age over 75 years (95%CI: 3.30- 27.82), low family income (95%CI: 1.80-50.98), and comorbidities (95%CI: 4.90-5.40). However, sarcopenia was associated with the presence of physical inactivity (95%CI: 1.26-10.44), low weight/ eutrophic (95%CI: 3.32-26.76), and malnutrition/nutritional risk (95%CI: 1.30-7.70) for older adults with and without type 2 diabetes mellitus. Conclusion: older adults with diabetes have a higher vulnerability to develop Frailty Syndrome, necessitating the adoption of preventive measures in primary healthcare.

Frailty Syndrome and sarcopenia in older adults with and without type 2 diabetes mellitus in the municipality of Sinop, Mato Grosso: an epidemiological study.

to relate Frailty Syndrome and sarcopenia in older adults with and without type 2 diabetes mellitus and identify potential risk factors for frailty and sarcopenia. this descriptive epidemiological study was conducted with 140 older adults in the municipality of Sinop, Mato Grosso, Brazil. The frailty phenotype was used for the assessment of Frailty Syndrome, and a physical assessment questionnaire with calf circumference measurement was used for the assessment of sarcopenia. regarding Frailty Syndrome, a higher percentage was observed in older adults with type 2 diabetes mellitus compared to those without the disease (p = 0.00). Concerning the presence of sarcopenia, older adults with and without type 2 diabetes mellitus showed similar values, with no statistical significance (p = .74). Frailty Syndrome was associated with physical inactivity (95%CI: 3.29-56.55), age over 75 years (95%CI: 3.30- 27.82), low family income (95%CI: 1.80-50.98), and comorbidities (95%CI: 4.90-5.40). However, sarcopenia was associated with the presence of physical inactivity (95%CI: 1.26-10.44), low weight/ eutrophic (95%CI: 3.32-26.76), and malnutrition/nutritional risk (95%CI: 1.30-7.70) for older adults with and without type 2 diabetes mellitus. older adults with diabetes have a higher vulnerability to develop Frailty Syndrome, necessitating the adoption of preventive measures in primary healthcare.

Calf circumference predicts sarcopenia in maintenance hemodialysis.

Early recognition of sarcopenia in hemodialysis (HD) patients will be of great importance in preventing adverse outcomes and improving the quality of life in these patients. The main goal of this study was to evaluate the diagnostic accuracy of calf circumference (CC) measurement in detecting sarcopenia among CKD patients undergoing maintenance HD. This cross-sectional study included 52 patients (53 ± 17 years) who were currently in a maintenance HD. Muscle strength was evaluated using handgrip strength, and smooth muscle mass index (SMI) was assessed through bioelectrical impedance analysis, and CC was measured at the widest part of the calf with the foot pressed against a hard surface. Out of the total patient population, sarcopenia was identified in 32.7% (n = 17). The two groups were comparable in terms of age, weight, and height, but the median body mass index of sarcopenic group was statistically lower than nonsarcopenic group (21.6 kg/m2 [18.9-24.6] vs 24.7 kg/m2 [21.4-27.3]. The sarcopenic group had a substantially smaller CC than the nonsarcopenic group (30.0 cm [26.5-32.0] vs 31.5 cm [30.3-34.8], P = 0.013; respectively). In the regression analysis, CC was found to be independently associated with post-HD SMI (P < 0.001; odds ratio, 1.938; and 95% CI, 1.020-2.856). CC was positively but weakly correlated with handgrip strength, however strong and significant correlation was found between CC and SMI (r = 0.277, P = 0.047 and r = 0.733, P < 0.001; respectively). A CC of 31 cm or less predicted confirmed sarcopenia in HD patients (area under the curve = 0.709, P = 0.006, specificity = 0.556, sensitivity = 0.765). Low muscle mass and potentially low muscle strength in HD patients can be accurately identified through the use of CC measurements. Specifically, a CC measurement below 31 cm has found to be a useful indicator to identify individuals on maintenance HD.

Clinical considerations for sarcopenia in older Colombian Afro-descendant and mestizo women.

To identify the frequencies of clinical suspicion of sarcopenia (CSS) and probable sarcopenia (PS) and their association with ethnic groups. This cross-sectional study categorized 700 women into Afro-descendant and mestizo ethnic groups. Calf circumference, muscle strength, and gait speed were measured. CSS was assessed using a sarcopenia risk scale and the measurement of calf circumference; the muscle strength of the dominant hand was used to establish PS. Unadjusted logistic regressions assessed associations between CSS/PS and ethnicity. Two adjusted logistic regression models included relevant covariates. CSS and PS were identified in 10.4% to 20.7% and 7.8% to 14.1% of study participants, respectively. Compared with mestizos, Afro-descendants had a more favorable sarcopenia risk score, greater calf circumference, and greater muscle strength and were associated with a lower risk for CSS (odds ratio [OR]: 0.13, 95% confidence interval [CI]: 0.06-0.28 and OR: 0.12, 95% CI: 0.07-0.21) and PS (OR: 0.12, 95% CI: 0.05-0.30 and OR: 0.11, 95% CI: 0.06-0.21). Compared with mestizos, CSS and PS were less frequent among Afro-descendants, who had 87% to 88% lower probability of CSS and 88% to 89% lower probability of PS.

Anthropometric measures and physical examination could be used to assess phenotypic GLIM (Global leadership initiative on malnutrition) criteria in heart failure patients

Background and aimsThe assessment of muscle mass using technology-based methods is less commonly performed when applying the Global Leadership Initiative on Malnutrition (GLIM) criteria due to the lack of skilled clinical nutrition practitioners and/or equipment. Based on the predictive validity of poor health outcomes and feasibility in clinical practice, this study aimed to analyze whether the measurement of calf circumference (CC), mid-upper arm circumference (MAC), and the physical examination could be used as substitutes for muscle mass assessment, as well as handgrip strength (HGS) used as a substitution when applying the GLIM criteria in hospitalized HF patients. Methods and resultsFrom June 2022 to January 2023, a single-center prospective study including 216 patients was performed. Additionally, covariates were identified by a directed acyclic graph. The multivariate logistic regression analysis was also used to analyze and compare the association between poor health outcomes and malnutrition (based on 5 types of GLIM criteria). Cohen-kappa coefficient and TELOS-feasibility score were calculated. The prevalence of malnutrition ranged from 35.2% to 42.6%, depending on the tool used. After adjusting for covariates, malnutrition assessed using CC, MAC, or physical examination within the GLIM criteria was independently associated with poor clinical outcomes (90-day HF-related readmission or all-cause mortality and prolonged hospital stay) but not with HGS. ConclusionCC, MAC and results from physical examination but not HGS may serve as a substitutive metric of muscle mass contained in the GLIM criteria to diagnose malnutrition and predict poor clinical outcomes among HF patients. Registration numberThis study was registered at Chinese Clinical Trial Registry.(ChiCTR2200057876) on 20 Mar. 2022.

The effect of technical training on physical parameters of 11-14 years old freestyle wrestlers

In the study conducted on two groups who regularly practised freestyle wrestling 5 days a week, the mean age of the experimental group was 12.54±0.82 (year), mean body weight was 48.36±8.23 (kg) and mean height was 156.18±8.58 (cm). In the control group, mean age was 13.62±0.33 (year), mean body weight was 47.43±6.65 (kg) and mean height was 158.24±2.26 (cm). The aim of the study was to determine the physical changes of adolescent wrestlers after the technical training. In the method of the study, subcutaneous fat thickness was measured after anthropometric measurements; biceps, triceps, subscapular, pectoral, abdominal, iliac, quadriceps and calf regions were measured. Body circumference measurements: Shoulder, single shoulder, arm excitation circumference, arm contraction, forearm excitation, chest circumference, chest inspiration circumference and chest expression circumference, abdomen, hip, thigh and calf circumferences were measured. The results obtained from the pre-post test data were obtained by applying Paired t-test. The pre-post test subcutaneous measurement results of the experimental group wrestlers; subscapular, biceps, triceps, pectoral, abdominal, suprailiac, tnigh parameters have a significant relationship in the pre-post test results (p0.05). No significant difference was found between the pre-post test data of single shoulder and calf circumference measurements. Considering the results, it was observed that technical training in freestyle wrestling contributed positively to the physical development of adolescent wrestlers.

Diagnostic performance of calf circumference, SARC-F, and SARC-CalF for possible sarcopenia screening in Indonesia

Asian working group for sarcopenia (AWGS) recently introduced “possible sarcopenia” diagnosis for early identification of sarcopenia in the primary healthcare. For initial screening, 3 modalities, i.e. calf circumference (CC) measurement, strength, assistance with walking, rising from a chair, climbing stairs, and falls (SARC-F) questionnaire, and a combination of both (SARC-CalF), are recommended. However, no validation study has been done until now. Therefore, this study aims to evaluate the diagnostic performance of the recommended screening modalities using data from Indonesia. This cross-sectional study included subjects aged ≥ 60 years old who visited primary healthcare in Surabaya, Indonesia. The diagnosis of possible sarcopenia was confirmed with hand-grip strength and repeated chair stand test. Receiver operating characteristic curve analysis was used to evaluate the diagnostic performance. Among 266 subjects, 186 (70%) were diagnosed with possible sarcopenia. Using the recommended cut-off, the area under the curve, sensitivity, and specificity were 0.511, 48.39% and 53.75% for CC, 0.543, 8.60% and 100% for SARC-F, and 0.572, 19.35% and 95% for SACRC-CalF. Our findings indicate that the diagnostic performance of the recommended screening modalities is poor. Multicenter studies from different areas in Indonesia should be done to confirm these findings.

Management of Sarcopenia in Primary Care Settings.

With aging, loss of skeletal muscle mass and muscle function increases, resulting in an increased risk of falls, fractures, long-term institutional care, cardiovascular and metabolic diseases, and even death. Sarcopenia, which is derived from the Greek words "sarx" or flesh+"penia" or loss, is defined as a condition characterized by low muscle mass and low muscle strength and performance. In 2019, the Asian Working Group for Sarcopenia (AWGS) published a consensus paper on the diagnosis and treatment of sarcopenia. The AWGS 2019 guideline, specifically, presented strategies for case-finding and assessment to help diagnose "possible sarcopenia" in primary care settings. For case finding, the AWGS 2019 guideline proposed an algorithm that recommends calf circumference measurement (cut-off <34 cm in men, <33 cm in women) or the SARC-F (strength, assistance with walking, rising from a chair, climbing stairs, and falls) questionnaire (cut-off ≥4). If this case finding is confirmed, handgrip strength (cutoff <28 kg in men, <18 kg in women) or the 5-time chair stand test (≥12 seconds) should be performed to diagnose "possible sarcopenia." If an individual is diagnosed as "possible sarcopenia," AWGS 2019 recommends that the individual should start lifestyle interventions and related health education for primary healthcare users. Because no medication is available to treat sarcopenia, exercise and nutrition is essential for sarcopenia management. Many guidelines, recommend physical activity, with a focus on progressive resistance (strength) training, as a first-line therapy for the management of sarcopenia. It is essential to educate older adults with sarcopenia on the need to increase protein intake. Many guidelines recommended that older people should consume at least 1.2 g of proteins/kg/d. This minimum threshold can be increased in the presence of catabolic or muscle wasting. Previous studies reported that leucine, a branched-chain amino acid, is essential for protein synthesis in muscle, and a stimulator for skeletal muscle synthesis. A guideline conditionally recommends that diet or nutritional supplements should be combined with exercise intervention for older adults with sarcopenia.

The Impact of Sarcopenia Risk on Postoperative Walking Independence in Older Adults Undergoing Total Joint Arthroplasty.

Sarcopenia is known to be associated with poor outcomes after arthroplasty; however, no study has reported the relationship between sarcopenia and postoperative walking independence. This study aimed to determine the impact of sarcopenia risk screening using the SARC-CalF questionnaire and calf circumference on the time to walk independently after total hip or knee arthroplasty in older patients. We included 599 nonobese patients aged 65 years and older who underwent unilateral and primary total hip or knee arthroplasty. Preoperative sarcopenia risk was assessed using the SARC-CalF or calf circumference. The outcome of this study was the time to independent walking after surgery; it was calculated as the number of days from the date of surgery to the date when the patient was able to walk independently. The association between preoperative sarcopenia risk and time to independent walking after surgery was analyzed using Kaplan-Meier curves and Cox proportional hazards models. Among the 599 patients undergoing total joint arthroplasty, 175 (29.2%) were determined to be at risk of sarcopenia using SARC-CalF and 193 (32.2%) using calf circumference. The Kaplan-Meier curve showed that sarcopenia risk assessed by SARC-CalF or calf circumference was associated with a prolonged time to independent walking in patients undergoing hip arthroplasty (log-rank test, P < .001 and P < .001, respectively). In patients undergoing hip arthroplasty, the Cox proportional hazards model showed that SARC-CalF score of 11 points and greater or a calf circumference less than the cutoff was a risk factor for delayed time to independent walking (hazard ratios: 0.55 and 0.57, P < .001 and P = .001, respectively). There was no association between preoperative sarcopenia risk and postoperative time to independent walking in patients who underwent knee arthroplasty. Sarcopenia screening tools, such as SARC-CalF or calf circumference, should be useful for planning postoperative rehabilitation in older adults scheduled for hip arthroplasty. However, the accuracy of SARC-CalF or calf circumference measurement in patients scheduled for knee arthroplasty may be low.

S-49-3: THE ASSOCIATION BETWEEN CALF CIRCUMFERENCE AND MID-UPPER ARM CIRCUMFERENCE AND PREVALENCE OF HYPERTENSION: FINDINGS FROM THE PURE CHINA STUDY

Objective: To investigate the association of calf circumference (CC), mid-upper arm circumference (MUAC) and their derivative indexes (waist-to-arm and waist-to-calf circumference ratio) with prevalence of hypertension. Methods: A total of 47,677 individuals aged 35–70 years with measurement of CC, MUAC and blood pressure were available for analysis. CC and MUAC were measured under standardized training. The association of CC and MUAC with hypertension were tested in logistic regression analyses and reported as odds ratio (OR) with 95% CI. Subgroup analysis for BMI was conducted. Results: CC and MUAC were positively correlated with hypertension in the crude model. When adjusted for the BMI and waist, larger CC and MUAC were associated with a lower hypertension prevalence rate. It was stable after adjusted for demographic characteristics, lifestyle behaviors and health status [OR of 0.96(0.91, 1.03), 0.90(0.83, 0.97), and 0.85(0.80, 0.90) for Q2, Q3, and Q4 for CC, P for trend &lt; 0.05, respectively; OR of 1.00(0.94, 1.07), 0.94(0.88, 1.00), and 0.82(0.76, 0.88) for Q2, Q3, and Q4 for MUAC, P for trend &lt; 0.05, respectively]. Larger waist-to-arm and waist-to-calf circumference ratios were correlated with a higher risk of hypertension. For the overweight (BMI 24–28 kg/m2) group, as the CC or MUAC increased, a significant trend for a lower prevalence of hypertension was observed [OR of 0.87(0.77, 0.98), 0.84(0.75, 0.95), and 0.79(0.69, 0.90) for Q2, Q3, and Q4 for CC, P for trend &lt; 0.05, respectively; OR of 0.86(0.76, 0.97), 0.77(0.69, 0.87), and 0.71(0.63, 0.80) for Q2, Q3, and Q4 for MUAC, P for trend &lt; 0.05, respectively].

Calf circumference predicts frailty in older adults: the Chinese longitudinal healthy longevity survey

BackgroundAlthough frailty is a common geriatric syndrome in old adults, a simple method to assess the degree of frailty in a person has not yet been established. In this study we have tried to establish the association between calf circumference (CC) and frailty among older Chinese people.MethodsWe used the data obtained from the 2014 edition of the Chinese Longitudinal Healthy Longevity Survey; 1216 participants aged ≥60 years were included for the study. Body mass index, CC and waist circumference measurement data, and laboratory test results were collected. Frailty status was measured using the frailty index (FI). Participants were then classified into non-frail (FI < 0.25) and frail (FI ≥ 0.25) groups.ResultsThere were 874 participants (71.9%) in the non-frail group and 342 (28.1%) in the frail group. The CC was significantly different between the two groups (31.54 ± 4.16 versus 28.04 ± 4.53, P < 0.001). Logistic regression analysis revealed that CC (odds ratio = 0.947, 95% confidence interval: 0.904–0.993, P = 0.023) was an independent impact factor associated with frailty. The CC value of 28.5 cm was considered the best cut-off value in women with area under the curve (AUC) was 0.732 (P < 0.001) and 29.5 cm in men with AUC was 0.592 (P = 0.004);We created a simple prediction model for frailty that included age,sex and CC:Logit(P)=-9.756+0.123*Age-0.512*Sexman=1,woman=0-0.053*CC,\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extrm{Logit}(P)=-9.756+0.123\\ast \ extrm{Age}-0.512\\ast \ extrm{Sex}\\left(\ extrm{man}=1,\ extrm{woman}=0\\right)-0.053\\ast \ extrm{CC},$$\\end{document}P = elogit(P) /1 + elogit(P), and AUC is 0.849 (P < 0.001).ConclusionsCC is a convenient and predictable marker of frailty in older adults.

A Comprehensive Evaluation of Minimally Invasive Achilles Tendon Reconstruction with Hamstring Graft Indicates Satisfactory Long-Term Outcomes.

Background and objectives: The Achilles tendon, the largest tendon in the body, is vulnerable to injury because of its limited blood supply and the combination of forces to which it is subjected. Given the relevance of the Achilles tendon in the proper function of the foot and ankle, the primary goal of the present study was to use a holistic approach for a comprehensive evaluation of Achilles tendon reconstruction results on multiple levels. Materials and Methods: The study was designed in the following way: 30 patients with partial or total Achilles tendon tears were subjected to the minimally invasive Achilles tendon reconstruction. Patients were then subjected to the clinical, functional and isokinetic tests 12 and 24 months after the treatment. The clinical evaluation included calf circumference measurements and subjective patient-reported tests: ATRS, EQ-5D-5L and VAS scales. The functional evaluation was based on three tests: the weight-bearing lunge test, the heel rise test and single leg hop. Isometric and isokinetic evaluation was performed using a Biodex 3 dynamometer. Results: The calf circumference of the operated limbs was significantly lower than the non-operated limb 12 months after the surgical procedure, however this improved at the second evaluation. All subjective outcomes improved significantly 24 months after the surgery. Significantly better results in the function of the operated limbs were also obtained 24 months after the surgery. However, most of the muscle strength parameters of the operated limbs were already comparable to non-operated ones 12 months after the surgery and were comparable between two evaluation times. Conclusions: The overall results of this extensive evaluation are highly satisfactory and patients returned to their normal physical activity. From a medical point of view, it is assumed that the healing process is completed 12 months after the surgery, however, importantly, our results indicate that we should consider the healing process and the rehabilitation process separately.