scholarly journals The Association Between Balance and Muscular Strength in Healthy Young Adults

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.

scholarly journals BIOLOGICAL MATURATION AND MUSCULAR STRENGTH: MEDIATION ANALYSIS IN PREPUBESCENT GIRLS

2018 ◽  
Vol 24 (3) ◽  
pp. 192-196 ◽  
Author(s):  
Leonardo Gomes de Oliveira Luz ◽  
Tatiana Durão D`Ávila Luz ◽  
João Valente-dos-Santos ◽  
João Pedro Duarte ◽  
André Filipe Teixeira e Seabra ◽  
...  
Keyword(s):  
Body Mass ◽  
Mediation Analysis ◽  
Muscular Strength ◽  
Handgrip Strength ◽  
Biological Maturation ◽  
Strength Tests ◽  
Physical Tests ◽  
And Performance ◽  
The Relationship ◽  
Medicine Ball

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.

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

2001 ◽  
Vol 90 (4) ◽  
pp. 1205-1210 ◽  
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.

scholarly journals The Relationship Between Soldier Height, Weight and Army Combat Fitness Scores

2021 ◽  
Author(s):  
Ryan Palmer ◽  
Mark DeBeliso
Keyword(s):  
United States Army ◽  
Body Mass ◽  
National Guard ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
The United States ◽  
Military Leaders ◽  
Physical Fitness Test ◽  
Fitness Test ◽  
The Relationship

The United States Army recently implemented the Army Combat Fitness Test (ACFT) which was designed to more accurately measure functional-combat fitness constructs. The ACFT replaced the former Army Physical Fitness Test (APFT). The three advent APFT consisted of: two-minute push-ups (PU), two-minute sit-ups (SU), and a timed two-mile run (RUN). The ACFT consists of six events; 3 Rep Max Deadlift (MDL), Standing Power Throw (SPT), Hand Release Push-up (HRP), Sprint-Drag-Carry (SDC), Hanging Leg Tuck (LTK), and a timed two-mile run (2MR). This study investigated the relationship between Soldier height and body mass kg on ACFT scores of 655 male U.S. Army National Guard Soldiers in a Field Artillery Brigade. For the purpose of the investigation body mass index (BMI) was calculated as the metric representing the Soldier(s) height and weight. The mean and standard deviation (sd) were calculated for the ACFT event and total scores. Pearson correlation coefficients (PCCs or r) were calculated between BMI and ACFT event and total scores. Likewise, PCCs were calculated between the ACFT event and total scores. The ACFT mean(sd) scores were as follows: MDL=92.2(31.8) (3 maximum repetitions), SPT=9.5(2.2) (meters), HRP=24.6(13.1) (repetitions), SDC=119.8(21.7) (seconds), LTK=6.2(5.4) (repetitions), 2MR=1095.0(233.7) (seconds), ACFT total score=442.3(54.4) (points). Significant positive correlations were found between the ACFT total score: MDL (r=0.70), SPT (r=0.50), HRP (r=0.74), and LTK (r=0.76) events. Conversely, significant negative correlations were identified between ACFT total score: SDC (r=-0.68) and 2MR (r=-0.53) events. Within the parameters of this study, Soldier BMI demonstrated no to weak association with individual ACFT event or ACFT total scores. Further, the range of PCCs between the ACFT event scores were no to moderately high. Military leaders may consider the results provided as combat and fitness tests continue to evolve.

scholarly journals The Relationship Among Alcohol Consumption, Dietary Intake, and Body Mass Index in Young Adults

2005 ◽  
Vol 105 (8) ◽  
pp. 60
Author(s):  
M.C. May ◽  
C.E. O’Neil ◽  
S.-J. Yang ◽  
T.A. Nicklas ◽  
R. Ranganathan ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Young Adults ◽  
Alcohol Consumption ◽  
Dietary Intake ◽  
Body Mass ◽  
The Relationship

scholarly journals Relação entre duas equações do índice de massa corporal em mulheres / Relationship between two equations of the body mass index in women

2018 ◽  
Vol 7 (1) ◽  
pp. 72
Author(s):  
William Cordeiro de Souza ◽  
André De Camargo Smolarek ◽  
Denise Barth Rebesco ◽  
Marcos Tadeu Grzelczak ◽  
Valderi Abreu de Lima ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Data Analysis ◽  
Body Mass ◽  
Pearson Correlation ◽  
The Body ◽  
Descriptive Statistics ◽  
Pearson Correlation Coefficient ◽  
Anthropometric Measures ◽  
Significance Level ◽  
The Relationship

Objetivo: Relacionar duas equações do método antropométrico do Índice de Massa Corporal (IMC) proposto por Quételet e Trefethen em mulheres. Métodos: A amostra foi constituída por 222 mulheres do município de Canoinhas/SC, com idades entre 18 e 49 anos. Para as medidas antropométricas foi avaliada a massa corporal e a estatura. Por meio dos dados obtidos foi calculado o IMC utilizando às fórmulas: Quételet= (kg/m2) e Trefethen= (1,3*kg/m2,5). Na análise dos dados realizou-se a estatística descritiva, o fator de correlação de Pearson (r) foi realizado para verificar a relação entre os métodos e o teste de Bland-Altman foi utilizado para verificar a concordância entre as equações. Foi adotado um nível de significância de p<0,05. Resultados: Foi encontrada uma relação muito forte e significante (r= 0,98; p= <0,001) com intervalo de confiança (IC 95% = 0,93-0,99) e concordância entre as equações do IMC. Conclusão: A equação do IMC de Trefethen apresentou associação muito forte e significante com a equação IMC de Quételet em mulheres.AbstractObjective: To relate two equations of the anthropometric method of the Body Mass Index (BMI) proposed by Quételet and Trefethen in women. Methods: The sample consisted of 222 women from the municipality of Canoinhas/SC, aged between 18 and 49 years. For the anthropometric measures body mass and height were evaluated. By means of the data obtained, the BMI was calculated using the formulas: Quételet= (kg/m2) and Trefethen= (1,3*kg/m2,5). In the data analysis, descriptive statistics were performed, the Pearson correlation coefficient (r) was performed to verify the relationship between the methods and the Bland-Altman test was used to verify the concordance between the equations. A significance level of p <0.05 was adopted. Results: A very strong and significant relationship was found (r= 0.98, p= <0.001) with a confidence interval (95% CI= 0.93-0.99) and concordance between the BMI equations. Conclusion: The BMI equation of Trefethen showed a very strong and significant association with the BMI equation of Quételet in women.

scholarly journals Anthropometric measures as fitness indicators in primary school children: The Health Oriented Pedagogical Project (HOPP)

2018 ◽  
Vol 46 (21_suppl) ◽  
pp. 48-53
Author(s):  
Asgeir Mamen ◽  
Per Morten Fredriksen
Keyword(s):  
Muscle Mass ◽  
Body Mass ◽  
Handgrip Strength ◽  
Area Under The Curve ◽  
Primary School Children ◽  
Characteristic Analysis ◽  
Anthropometric Measures ◽  
Running Performance ◽  
Fitness Score ◽  
Z Scores

Aims: As children’s fitness continues to decline, frequent and systematic monitoring of fitness is important. Easy-to-use and low-cost methods with acceptable accuracy are essential in screening situations. This study aimed to investigate how the measurements of body mass index (BMI), waist circumference (WC) and waist-to-height ratio (WHtR) relate to selected measurements of fitness in children. Methods: A total of 1731 children from grades 1 to 6 were selected who had a complete set of height, body mass, running performance, handgrip strength and muscle mass measurements. A composite fitness score was established from the sum of sex- and age-specific z-scores for the variables running performance, handgrip strength and muscle mass. This fitness z-score was compared to z-scores and quartiles of BMI, WC and WHtR using analysis of variance, linear regression and receiver operator characteristic analysis. Results: The regression analysis showed that z-scores for BMI, WC and WHtR all were linearly related to the composite fitness score, with WHtR having the highest R2 at 0.80. The correct classification of fit and unfit was relatively high for all three measurements. WHtR had the best prediction of fitness of the three with an area under the curve of 0.92 ( p < 0.001). Conclusions: BMI, WC and WHtR were all found to be feasible measurements, but WHtR had a higher precision in its classification into fit and unfit in this population.

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

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.

scholarly journals Infant weight gain and adolescent body mass index: comparison across two British cohorts born in 1946 and 2001

2018 ◽  
Vol 103 (10) ◽  
pp. 974-980 ◽  
Author(s):  
William Johnson ◽  
David Bann ◽  
Rebecca Hardy
Keyword(s):  
Body Mass Index ◽  
Weight Gain ◽  
Body Mass ◽  
Secular Change ◽  
Obesity Epidemic ◽  
Cohort Differences ◽  
Z Scores ◽  
Infant Weight Gain ◽  
Relationship Of ◽  
The Relationship

ObjectiveTo investigate how the relationship of infant weight gain with adolescent body mass index (BMI) differs for individuals born during and before the obesity epidemic era.DesignData from two British birth cohorts, the 1946 National Survey of Health and Development (NSHD, n=4199) and the 2001 Millennium Cohort Study (MCS, n=9417), were used to estimate and compare associations of infant weight gain between ages 0 and 3 years with adolescent outcomes.Main outcome measuresBMI Z-scores and overweight/obesity at ages 11 and 14 years.ResultsInfant weight gain, in Z-scores, was positively associated with adolescent BMI Z-scores in both cohorts. Non-linearity in the MCS meant that associations were only stronger than in the NSHD when infant weight gain was above −1 Z-score. Using decomposition analysis, between-cohort differences in association accounted for 20%–30% of the differences (secular increases) in BMI Z-scores, although the underlying estimates were not precise with 95% CIs crossing 0. Conversely, between-cohort differences in the distribution of infant weight gain accounted for approximately 9% of the differences (secular increases) in BMI Z-scores, and the underlying estimates were precise with 95% CI not crossing 0. Relative to normal weight gain (change of −0.67 to +0.67 Z-scores between ages 0 and 3 years), very rapid infant weight gain (>1.34), but not rapid weight gain (+0.67 to +1.34), was associated with higher BMI Z-scores more strongly in the MCS (β=0.790; 95% CI 0.717 to 0.862 at age 11 years) than in the NSHD (0.573; 0.466 to 0.681) (p<0.001 for between-cohort difference). The relationship of slow infant weight gain (<−0.67) with lower adolescent BMI was also stronger in the MCS. Very rapid or slow infant weight gain was not, however, more strongly associated with increased risk of adolescent overweight/obesity or thinness, respectively, in the more recently born cohort.ConclusionsGreater infant weight gain, at the middle/upper end of the distribution, was more strongly associated with higher adolescent BMI among individuals born during (compared with before) the obesity epidemic. Combined with a secular change towards greater infant weight gain, these results suggest that there are likely to be associated negative consequences for population-level health and well-being in the future, unless effective interventions are developed and implemented.

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

2020 ◽  
Vol 17 (1) ◽  
pp. 361 ◽  
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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