BIOLOGICAL MATURATION AND MUSCULAR STRENGTH: MEDIATION ANALYSIS IN PREPUBESCENT GIRLS

ABSTRACT Introduction: Biological maturation has been related to the level of physical activity and motor competence of children. Objectives: This study aimed to: 1) analyze the association between biological maturation and performance in muscular strength tests and 2) examine whether the relationship between maturation and performance in physical tests is mediated by anthropometric variables. Method: The sample was composed of 71 eight-year-old Brazilian girls. Anthropometry considered stature, body mass, waist circumference, estimated fat mass and fat-free mass. Biological maturation was assessed based on the percentage of predicted adult stature. The physical tests consisted of 2-kg medicine ball throw, handgrip strength, sit-ups and standing long jump. Pearson’s correlation test was conducted between the study variables and the last stage consisted of a causal mediation analysis. Results: Biological maturation was significantly associated with the 2-kg medicine ball throw (r=0.52) and handgrip strength (r=0.42) tests. In the 2-kg medicine ball throw, the relationship with maturation was mediated by body mass (total mediation, Sobel’s Test = 2.214, p<0.05) and by estimated lean mass (total mediation; Sobel’s Test = 3.146, p<0.001). In the handgrip strength test, body mass was the only mediating variable (total mediation; Sobel’s Test = 2.251, p<0.05). Conclusions: Advanced maturational status appears to contribute to the performance of prepubescent girls in muscular strength tests in which there is no translocation of total or partial body mass. It is recommended that studies be conducted in other age groups. Level of Evidence III; Study of nonconsecutive patients; without consistently applied reference ‘‘gold’’ standard.

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The Association Between Balance and Muscular Strength in Healthy Young Adults

Journal of Health, Sports, and Kinesiology - JOHSK ◽

10.47544/johsk.2021.2.1.20 ◽

2021 ◽

Vol 2 (1) ◽

pp. 20-21

Author(s):

Mariah Gleeson ◽

Mathew Mallet ◽

Elise Brown

Keyword(s):

Young Adults ◽

Body Mass ◽

Muscular Strength ◽

Postural Sway ◽

Causal Effect ◽

Handgrip Strength ◽

Pearson Correlation ◽

Public Health Issue ◽

Z Scores ◽

The Relationship

With aging, there are natural physiological declines, such as decreased neuromuscular function, muscular strength, and balance, often preceding a fall, which is indicated as a public health issue. Nevertheless, young adults do not experience such natural declines as rapidly yet encounter falls that may lead to musculoskeletal injuries. Therefore, the objective of this study was to evaluate the relationship between postural sway and muscular strength in healthy young adults using gold-standard measurements. The study consisted of thirty-nine healthy adults (mean age 20.8 ± 2.8 years, mean body mass 78.4 ± 17.3 kg.), with no known muscular or bone deficits, uncontrolled medical conditions, high blood pressure, or contraindications to exercise. Static balance was assessed using force plates, measuring vision, vestibular, and proprioception contributions toward balance. Grip strength was assessed using a handgrip dynamometer. After 48 hours, upper and lower body strengths were assessed using a one-repetition maximum bench press and leg press, respectively. To control for effects of body mass on strength, strength measurements were normalized, then transformed into z-scores. The average of the z-scores was computed to form a muscular strength index. Pearson correlation coefficients (r) were used to determine the relationship between balance and strength, while controlling for age and sex. The p-value was set at < 0.05. A negative moderate correlation was found between the proprioceptive contribution toward balance and normalized handgrip strength (r = -0.434, p < 0.05). There were no other significant relationships between postural sway and strength measurements. Our findings indicate that who possess higher handgrip strength may have better balance, however longitudinal studies are needed to determine a causal effect. The lack of association between postural sway and other strength measures suggests that these parameters are independent of each other and may require a separate training form.

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Muscular Strength Spurts in Adolescent Male Basketball Players: The INEX Study

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18020776 ◽

2021 ◽

Vol 18 (2) ◽

pp. 776

Author(s):

Eduardo Guimarães ◽

José A. R. Maia ◽

Mark Williams ◽

Filipa Sousa ◽

Eduardo Santos ◽

...

Keyword(s):

Muscular Strength ◽

Handgrip Strength ◽

Height Velocity ◽

Adolescent Male ◽

Strength Development ◽

Maximal Velocity ◽

Countermovement Jump ◽

Basketball Players ◽

Squat Jump ◽

Medicine Ball

Although successful performance in basketball requires high levels of muscular strength during adolescence, its development is confounded by the effects of normal growth. We examine the timing, intensity and sequence of muscular strength according to biological age (years from peak height velocity (PHV)) and hypothesize that young basketball players attain their peak muscular strength spurts around PHV. A total of 160 adolescent male basketballers, aged 11–15 years, were followed bi-annually over 3 consecutive years. The years from attainment of PHV and peak weight velocity (PWV) were estimated and five muscular strength measures (sit-ups, handgrip, seated medicine ball throw, squat jump and countermovement jump) were aligned to years from PHV in 3-month intervals. Strength velocities were estimated using a non-smooth mathematical model. The mean ages at-PHV and at-PWV were 13.90 ± 1.40 years and 13.90 ± 1.79 years, respectively. Maximal velocity in sit-ups was attained 6 months prior to attainment of PHV (intensity = 10.69 repetitions·year−1), whereas maximal velocity in squat jump occurred 6 months after-PHV (intensity = 3.93 cm·year−1). Handgrip strength, seated medicine ball throw and countermovement jump maximal velocity peaked at-PHV (intensity = 8.47 kgf·year−1, intensity = 0.75 m·year−1, intensity = 5.59 cm·year−1, respectively). In general, maximal velocity spurts did not differ in their timing, with the velocities reaching a peak concurrent with PHV and PWV or within 6 months of its attainment. Basketball coaches, as well as strength and conditioning trainers, should consider individual differences in strength development and be aware of rapid periods of growth in stature when planning and designing muscular strength training regimes.

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CNTF genotype is associated with muscular strength and quality in humans across the adult age span

Journal of Applied Physiology ◽

10.1152/jappl.2001.90.4.1205 ◽

2001 ◽

Vol 90 (4) ◽

pp. 1205-1210 ◽

Cited By ~ 61

Author(s):

Stephen M. Roth ◽

Matthew A. Schrager ◽

Robert E. Ferrell ◽

Steven E. Riechman ◽

E. Jeffrey Metter ◽

...

Keyword(s):

Muscle Mass ◽

Body Mass ◽

Muscular Strength ◽

Peak Torque ◽

Fat Free Mass ◽

Muscle Quality ◽

Knee Extensors ◽

Muscular Power ◽

Adult Age ◽

The Relationship

The relationship between ciliary neurotrophic factor (CNTF) genotype and muscle strength was examined in 494 healthy men and women across the entire adult age span (20–90 yr). Concentric (Con) and eccentric (Ecc) peak torque were assessed using a Kin-Com isokinetic dynamometer for the knee extensors (KE) and knee flexors (KF) at slow (0.52 rad/s) and faster (3.14 rad/s) velocities. The results were covaried for age, gender, and body mass or fat-free mass (FFM). Individuals heterozygous for the CNTF null (A allele) mutation (G/A) exhibited significantly higher Con peak torque of the KE and KF at 3.14 rad/s than G/G homozygotes when age, gender, and body mass were covaried ( P < 0.05). When the dominant leg FFM (estimated muscle mass) was used in place of body mass as a covariate, Con peak torque of the KE at 3.14 rad/s was also significantly greater in the G/A individuals ( P < 0.05). In addition, muscle quality of the KE (peak torque at 3.14 rad · s−1 · leg muscle mass−1) was significantly greater in the G/A heterozygotes ( P < 0.05). Similar results were seen in a subanalysis of subjects 60 yr and older, as well as in Caucasian subjects. In contrast, A/A homozygotes demonstrated significantly lower Ecc peak torque at 0.52 rad/s for both KE and KF compared with G/G and G/A groups ( P < 0.05). No significant relationships were observed at 0.52 rad/s between genotype and Con peak torque. These data indicate that individuals exhibiting the G/A genotype possess significantly greater muscular strength and muscle quality at relatively fast contraction speeds than do G/G individuals. Because of high positive correlations between fast-velocity peak torque and muscular power, these findings suggest that further investigations should address the relationship between CNTF genotype and muscular power.

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P1415PARATHYROIDECTOMY IMPROVES MUSCULAR FUNCTION BUT NOT MUSCLE MASS IN HEMODIALYSIS PATIENTS WITH SEVERE HYPERPARATHYROIDISM

Nephrology Dialysis Transplantation ◽

10.1093/ndt/gfaa142.p1415 ◽

2020 ◽

Vol 35 (Supplement_3) ◽

Author(s):

Shirley Crispilho ◽

Eduardo J Duque ◽

Carla Avesani ◽

Rosa Maria R Pereira ◽

Ana Lúcia De Sá-Pinto ◽

...

Keyword(s):

Physical Activity ◽

Muscle Mass ◽

Body Mass ◽

Negative Impact ◽

Hemodialysis Patients ◽

Skeletal Muscle Index ◽

Strength Tests ◽

Muscular Function ◽

And Performance ◽

The Impact

Abstract Background and Aims Increased levels of parathyroid hormone (PTH) are associated with a negative impact on the bone-muscle axis including sarcopenia with muscle weakness and muscle atrophy and osteoporosis, and it is possible that treating hyperparathyroidism (HPT) can ameliorate these disturbances. However, the effects of parathyroidectomy (PTX) on muscle mass, strength and performance, and physical activity have not been thoroughly investigated. This study aims to evaluate the impact of PTX on muscle (mass, strength, and performance), physical activity, body fat and resting energy expenditure (REE) in patients on hemodialysis with severe HPT. Method We are prospectively evaluating muscle mass strength, performance and physical activity of 30 patients before and after 6 months of PTX by using Actigraph GT3X accelerometer, timed-up-and-Go (TuG), Sit-to-Stand-to-Sit (STS) and muscle strength tests [handgrip (HGS), supine (SP) and leg press (LP)]. Body composition changes were assessed by dual-energy x-ray absorptiometry (DXA), and REE was examined by indirect calorimetry. Results At 6 months after PTX, 11 patients who already completed the protocol, showed a significant drop in PTH [1445 (1363-1937) vs. 54 (23-132) pg/mL; p = 0.002] and alkaline phosphatase [306 (235-744) vs. 77.5 (52-100] U/L); p = 0.002], a significant increase of number of steps/day [4321 (3384 – 6317) vs. 5950 (3918 – 7159); p = 0.04] and improvements of strength tests: HGS (27 ±14 vs. 31 ±15 kg; p = 0.01); SP (27 ±15 vs. 31 ±17 kg; p = 0.01] and LP [27 (2-36) vs. 36 (24-89) kg; p 0.04]. In addition, there was a significant reduction of TuG [10 (8-15) vs. 8 (7-11) seconds; p = 0.01], and a tendency towards STS improvement [6 (0-7) vs. 8 (7-11); p = 0.06]. A significant increase in body weight (66 ± 12 vs. 68 ± 14 Kg; p = 0.02), body mass index [24 (21–26) vs. 26 (21–28) kg/m2; p 0.001], and bone mineral content (BMC) [1.8 (1.3-2) vs. 2.1 (1.7-2.7); p=0.002] was seen. However, lean body mass (LBM) decreased [40.4 (38-55) vs. 39 (37-51) Kg; p=0.001], whereas fat mass (FAT) increased [18 (17-28) vs. 24 (17–30) kg; p = 0.02]. No change was noted in skeletal muscle index (SMI) and in REE [1580 (1193–1988) vs. 1473 (1326 - 1786) kcal/day; p = 0.7). We noticed a tendency toward an increase in IGF-1 levels [180 (141-207) vs. 223 (151-281) µg/L; p = 0.08], but no significant variation was found in serum albumin, insulin and HOMA index. Conclusion In hemodialysis patients with secondary hyperparathyroidism undergoing PTX, there were marked improvements of muscular function and bone mass, but not of muscle mass. Our findings suggest that PTH-associated sarcopenia is mediated not only by a decrease in muscle mass but also by muscle dysfunction. The long-term effect of PTX on muscle status remains to be further examined.

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Relationship Between Body Mass Index and Health and Occupational Performance Among Law Enforcement Officers, Firefighters, and Military Personnel: A Systematic Review

Current Developments in Nutrition ◽

10.1093/cdn/nzab055_058 ◽

2021 ◽

Vol 5 (Supplement_2) ◽

pp. 1248-1248

Author(s):

Tina Sergi ◽

Katherine Bode ◽

Deana Hildebrand ◽

Jay Dawes ◽

Jill Joyce

Keyword(s):

Cardiovascular Disease ◽

Body Mass Index ◽

Law Enforcement ◽

Body Mass ◽

Military Personnel ◽

Law Enforcement Officers ◽

Overweight And Obesity ◽

Fitness Test ◽

And Performance ◽

The Relationship

Abstract Objectives The prevalence of overweight and obesity among tactical populations is estimated at 70–75%, which may negatively impact health and performance. Since the relationship between BMI and health and performance is not well studied in tactical populations, the purpose of this study was to systematically review available literature on the relationship between BMI and health and performance among law enforcement officers (LEO), firefighters, and military personnel. Methods Literature searches were conducted in PubMed and SCOPUS using combinations of search terms: body mass index, health*, cardiovascular disease, heart disease, heart attack, myocardial infarction, heart failure, stroke, hypertension, cancer, diabetes, performance, physical fitness test*, physical training, fitness test*, injur*, law enforcement, police, trooper, firefighter, military, soldier, airmen, and sailor. Included studies used BMI as an adiposity assessment; involved cardiovascular disease (CVD), cancer, diabetes (T2DM), performance testing, and injuries among US LEOs, firefighters, or military personnel; and involved peer-reviewed primary research between 2000–2020. Review studies; studies on other tactical populations, retirees, and trainees; and studies using BMI as a covariate were excluded. Included articles were critically appraised using the Academy of Nutrition and Dietetics Quality Criteria Checklist. Results Twenty-seven articles were included. Overall quality was neutral. Nine studies found BMI was positively associated with CVD risk factors. Studies involving BMI and cancer were lacking. One study found BMI was positively associated with T2DM risk. Five studies on occupational/physical performance and twelve studies on injury found a higher BMI was often indicative of decreased performance and increased risk of injury in general, but protective against stress fractures. Conclusions Higher BMI was often associated with negative health and performance outcomes among tactical populations, especially when beyond the overweight classification. Public health practitioners should focus efforts on improving nutrition and physical activity to promote a healthy BMI among these individuals. Funding Sources None.

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Relative Handgrip Strength Diminishes the Negative Effects of Excess Adiposity on Dependence in Older Adults: A Moderation Analysis

Journal of Clinical Medicine ◽

10.3390/jcm9041152 ◽

2020 ◽

Vol 9 (4) ◽

pp. 1152

Author(s):

Robinson Ramírez-Vélez ◽

Miguel Ángel Pérez-Sousa ◽

Antonio García-Hermoso ◽

Fabrício Zambom-Ferraresi ◽

Nicolás Martínez-Velilla ◽

...

Keyword(s):

Adverse Effect ◽

Muscular Strength ◽

Handgrip Strength ◽

Functional Dependence ◽

Adult Population ◽

Optimal Level ◽

Negative Effects ◽

Excess Adiposity ◽

Older Adult Population ◽

The Relationship

The adverse effects of fat mass on functional dependence might be attenuated or worsened, depending on the level of muscular strength. The aim of this study was to determine (i) the detrimental effect of excess adiposity on dependence in activities of daily living (ADL), and (ii) whether relative handgrip strength (HGS) moderates the adverse effect of excess adiposity on dependence, and to provide the threshold of relative HGS from which the adverse effect could be improved or worsened. A total of 4169 participants (69.3 ± 7.0 years old) from 244 municipalities were selected following a multistage area probability sampling design. Measurements included anthropometric/adiposity markers (weight, height, body mass index, waist circumference, and waist-to-height ratio (WHtR)), HGS, sarcopenia “proxy” (calf circumference), and ADL (Barthel Index scale). Moderation analyses were performed to identify associations between the independent variable (WHtR) and outcomes (dependence), as well as to determine whether relative HGS moderates the relationship between excess adiposity and dependence. The present study demonstrated that (i) the adverse effect of having a higher WHtR level on dependence in ADL was moderated by relative HGS, and (ii) two moderation thresholds of relative HGS were estimated: 0.35, below which the adverse effect of WHtR levels on dependency is aggravated, and 0.62, above which the adverse effect of fat on dependency could be improved. Because muscular strength represents a critically important and modifiable predictor of ADL, and the increase in adiposity is inherent in aging, our results underscore the importance of an optimal level of relative HGS in the older adult population.

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Bio-Banding in Judo: The Mediation Role of Anthropometric Variables on the Maturation Effect

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17010361 ◽

2020 ◽

Vol 17 (1) ◽

pp. 361 ◽

Cited By ~ 1

Author(s):

Bruno B. Giudicelli ◽

Leonardo G. O. Luz ◽

Mustafa Sogut ◽

Alain G. Massart ◽

Arnaldo C. Júnior ◽

...

Keyword(s):

Physical Performance ◽

Body Mass ◽

Fat Mass ◽

Aerobic Capacity ◽

Handgrip Strength ◽

Fat Free Mass ◽

Mediation Analyses ◽

Arm Span ◽

The Relationship

Young judo athletes are bio-banding based on age and body mass and compete in weight classes. The purposes of this study were to investigate the influences of maturation on physical performance in young judokas through controlling the chronological age and body mass, and to examine the mediating role of anthropometric variables. Sixty-seven judokas, aged 11.0–14.7, were measured for 11 anthropometric and seven physical performance variables. Pearson partial correlations were conducted to verify the relationship between the maturational indicator and the dependent variables. Mediation analyses were performed to identify the extent to which anthropometric variables mediate the relationship. The maturation effect remained on the aerobic capacity and handgrip strength (p < 0.05). Fat mass (b = 80.335, 95%CI 11.580–204.270) and fat-free mass (b = 108.256, 95%CI 39.508–207.606) totally mediated the effect on aerobic capacity. Fat mass (b = 0.023, 95%CI 0.004–0.057), fat-free mass (b = 0.029, 95%CI 0.011–0.058), stature (b = 0.031, 95%CI 0.008–0.061), arm span (b = 0.021, 95%CI 0.003–0.044), and inferior members length (b = 0.022, 95%CI 0.005–0.049) totally mediated the effect on handgrip strength. The effect of biological maturation is noticeable even after age and body mass control, being mediated by anthropometric variables related to body composition and size.

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United States university-based officer training and its influence on physical assessment test performance

BMJ Military Health ◽

10.1136/bmjmilitary-2020-001486 ◽

2020 ◽

pp. bmjmilitary-2020-001486

Author(s):

Jessica C Tom ◽

B K Schilling ◽

B Poston ◽

C L Turner ◽

K N Radzak

Keyword(s):

Physical Activity ◽

Body Mass ◽

Test Performance ◽

Physical Fitness Test ◽

Physical Assessment ◽

Paired Samples ◽

Standing Long Jump ◽

Long Jump ◽

And Performance ◽

The Relationship

IntroductionCadets participating in Reserve Officers’ Training Corp (ROTC) at US universities undergo both Army Physical Fitness Test (APFT) and Occupational Physical Assessment Test (OPAT) evaluations prior to commissioning. The current study examined the relationship between ROTC physical training (PT) attendance and performance in the APFT and OPAT, and characterised physical activity of cadets outside of PT.MethodsTwenty-six cadets’ (21 males; age=20.81±2.48 years; height=171.16±8.62 cm; body mass=75.49±13.17 kg; body mass index=25.68±3.37 kg/m2) PT attendance, and diagnostic (week 1) and record (week 13) OPAT and APFT scores were documented. Paired samples t-tests evaluated differences in APFT and OPAT scores between the diagnostic and record tests. Pearson correlations were utilised to determine if a relationship existed between PT attendance and test performance. Participating cadets also completed monthly self-reported physical activity questionnaire (September, October, November); findings were reported using descriptive statistics.ResultsCadets attended 87% of PT sessions between OPAT administrations and 85% between APFT administrations. Cadets significantly improved the following test components: standing long jump (p=0.034), seated power throw (p=0.029), shuttle run (p=0.005), sit-ups (p=0.003) and 2-mile run (p=0.045). A significant, positive correlation was found between PT attendance and APFT sit-ups improvements (r=0.473, p=0.015). Cadets’ frequently reported additional physical activity days per week (range: 2.8–3.1 aerobic, 3.2–3.8 strength/power, 2.9–3.2 core strength/endurance).ConclusionsRegular participation in a single semester of ROTC PT was found to significantly increase cadets’ scores in some, but not all, components of the APFT and OPAT. Self-reported physical activity results indicate that cadets regularly train outside of organised PT.

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Mechanical Performance of Concrete Exposed to Sewage—The Influence of Time and pH

Minerals ◽

10.3390/min11050544 ◽

2021 ◽

Vol 11 (5) ◽

pp. 544

Author(s):

Justyna Czajkowska ◽

Maciej Malarski ◽

Joanna Witkowska-Dobrev ◽

Marek Dohojda ◽

Piotr Nowak

Keyword(s):

Compressive Strength ◽

Mechanical Performance ◽

Negative Influence ◽

Concrete Compressive Strength ◽

Active Sludge ◽

Strength Tests ◽

Compressive Strength Of Concrete ◽

And Performance ◽

The Relationship ◽

Microstructure And Performance

Contact of concrete with aggressive factors, technological structures, reduces their durability through microstructural changes. This work presents the results of research on determining the influence of post grit chamber sewage and sewage from the active sludge chamber in three different environments, i.e., acidic, neutral, and alkaline, on the structure and compressive strength of concrete. Compressive strength tests were carried out after 11.5 months of concrete cubes being submerged in the solutions and compared. To complete the studies, the photos of the microstructure were done. This made it possible to accentuate the relationship between the microstructure and performance characteristics of concrete. The time of storing the cubes in both acidic environments (sewage from post grit chamber and active sludge chamber) has a negative influence on their compressive strength. The compressive strength of cubes decreases along with the time. Compressive strength of cubes increases with increasing pH of the environment.

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Correlação entre fragilidade e força de preensão manual em idosos

Revista de Enfermagem UFPE on line ◽

10.5205/1981-8963-v12i10a237494p2590-2597-2018 ◽

2018 ◽

Vol 12 (10) ◽

pp. 2590

Author(s):

Ankilma Do Nascimento Andrade ◽

Janaina Barbosa da Silva ◽

Maria Cecilia Pereira ◽

Larice Costa Lourenço ◽

Wilkslam Alves de Araújo ◽

...

Keyword(s):

Grip Strength ◽

Body Mass ◽

Muscular Strength ◽

The Elderly ◽

Classification Criteria ◽

Activity Level ◽

Las Mujeres ◽

The Relationship ◽

Walking Time ◽

Program Version

RESUMO Objetivo: verificar a relação entre IMC e força de preensão com os critérios de classificação da fragilidade. Método: trata-se de um estudo quantitativo, de campo, exploratório e descritivo, por meio de um questionário com 300 idosos. Os dados foram registrados no programa SPSS, versão 20, e analisados por estatística descritiva e inferencial. Resultados: observaram-se associações do sexo com a fragilidade em tempo de caminhada, força de preensão e nível de atividade como, também, na correlação da estrutura com a força de preensão e da massa corporal com a força de preensão para os idosos e as idosas. Por fim, identificaram-se diferenças estatísticas entre a fragilidade em força de preensão, massa corporal e estatura dos homens. Conclusão: com relação aos componentes de fragilidade, houve diferença entre os sexos. As mulheres apresentaram fragilidade para a variável tempo de caminhada e os idosos foram mais frágeis para a força de preensão e o nível de atividade física. Descritores: Antropometria; Diferença Entre os Sexos; Envelhecimento; Estado Nutricional; Idoso Fragilizado; Força Muscular da Mão.ABSTRACT Objective: to verify the relationship between BMI and grip strength with the fragility classification criteria. Method: this is a quantitative field study, exploratory and descriptive, through a questionnaire with 300 elderly people. Data was recorded in the SPSS program, version 20, and analyzed by descriptive and inferential statistics. Results: sex associations with gait duration fragility, grip strength and activity level were observed, as well as in the correlation of the structure with grip strength and body mass with grip strength for the elderly and the elderly. Finally, statistical differences were identified between the grip strength, body mass and height of men. Conclusion: with regard to fragility components, there was difference between the sexes. The women presented fragility for the variable walking time and the elderly were more fragile for the grip strength and the level of physical activity. Descriptors: Anthropometry; Difference Between the Sexes; Aging; Nutritional Status; Fragile Elderly; Muscular Strength of the Hand.RESUMEN Objetivo: verificar la relación entre IMC y fuerza de asimiento con los criterios de clasificación de la fragilidad. Método: se trata de un estudio cuantitativo, de campo, exploratorio y descriptivo, por medio de un cuestionario con 300 ancianos. Los datos fueron registrados en el programa SPSS, versión 20, y analizados por estadística descriptiva e inferencial. Resultados: se observaron asociaciones del sexo con la fragilidad en tiempo de caminata, fuerza de asimiento y nivel de actividad como, también, en la correlación de la estructura con la fuerza de asimiento y de la masa corporal con la fuerza de asimiento para los ancianos y las personas de edad avanzada. Por último, se identificaron diferencias estadísticas entre la fragilidad en fuerza de asimiento, masa corporal y estatura de los hombres. Conclusión: con respecto a los componentes de fragilidad, hubo diferencia entre los sexos. Las mujeres presentaron fragilidad para la variable tiempo de caminata y los ancianos fueron más frágiles para la fuerza de asimiento y el nivel de actividad física. Descriptors: Antropometría; Diferencia entre los sexos; Envejecimiento; Estado Nutricional; Ancianos Fragilizados; Fuerza Muscular de la Mano.

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