Basic Anthropometric Characteristics Research Articles

Mathematical and computer modelling of age-related changes of basic anthropometric and mass-inertial characteristics of Bulgarian females

We study the age changes of the anthropometric as well as of the mass-inertial characteristics (MIC) of Bulgarian women aged 18-25 versus those aged 30-40. We do that via mathematical modelling of the human body (HB). Nowadays mathematical modelling is one of the modern methods for the determination of the MIC of different segments of the body, as well as of the whole body, and for studying the changes of the inertial characteristics during a specific motion of the considered person. The current work presents a 3D mathematical model (MM) of the HB, that is also generated in a computer environment. Both the model and its computer generation allow for the calculation of the MIC of all segments of the body, as well as for the whole HB in specific body positions. We consider such body postures which are presented in the corresponding classification of astronauts’ standard positions of interest for NASA. The obtained results are compared with those reported in the literature by other authors. The proposed models shall be also helpful in problems appearing in medicine (orthopaedics and traumatology), computer simulations, rehabilitation robotics, and sports, as well as in areas such as ergonomics, simulation of human behaviour in space, forensics (body fall, car crash) and more.

Study of age changes of basic anthropometric characteristics of Bulgarian females: groups 18-25 versus 30-40 years old

The present article aims to examine the age-related changes in the basic characteristics important for biomechanics (body height and body weight) of Bulgarian men. We do this after dividing the measured individuals into two age groups: I) 18-25 years and II) 30-40 years. The data used in the investigation were collected by performing our own anthropometric measurements. In group I) we measured 41 men and in group II) – 44 men. We present the mean values, standard deviations, and minimal and maximal values of the height, weight, and body mass index of each of the groups, as well as the corresponding probability distributions of these characteristics. The obtained results can be used when there is a need for such anthropometric and mass parameters, e.g., in problems related to the biomechanics of human movements, ergonomics, rehabilitation, orthopaedics and traumatology, sports, forensic studies, etc.

Mathematical Modelling of Basic Anthropometric and Mass Inertial Characteristics of Young Tennis Players Versus Nonplayers: II Case Study for Bulgarian Girls

Mathematical Modelling of Basic Anthropometric and Mass Inertial Characteristics of Young Tennis Players Versus Nonplayers: II Case Study for Bulgarian Girls

Mathematical Modelling of Basic Anthropometric and Mass Inertial Characteristics of Young Tennis Players Versus Nonplayers: I Case Study for Bulgarian Boys

Mathematical Modelling of Basic Anthropometric and Mass Inertial Characteristics of Young Tennis Players Versus Nonplayers: I Case Study for Bulgarian Boys

War in Ukraine – Changing the Polish paediatric population as a consequence of forced migration (a preliminary study)

The study aimed to briefly analyse the basic anthropometric characteristics of Ukrainian adolescents against their Polish counterparts. The study was school-based, carried out April–June 2022 and followed a cross-sectional model. It included 642 children from Poland and Ukraine (aged 10–15) who attended ten randomly selected primary schools in Kraków (Poland). Noticeable differences between Polish and Ukrainian adolescents were observed. As the analysed characteristics included features such as the amount and distribution of body fat, they can be crucial in the indirect assessment of health status, particularly the risk of cardiovascular and metabolic diseases. This in turn, can help to properly accommodate the changing needs of the population.

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The study aimed to briefly analyse the basic anthropometric characteristics of Ukrainian adolescents against their Polish counterparts. The study was school-based, carried out April–June 2022 and followed a cross-sectional model. It included 642 children from Poland and Ukraine (aged 10–15) who attended ten randomly selected primary schools in Kraków (Poland). Noticeable differences between Polish and Ukrainian adolescents were observed. As the analysed characteristics included features such as the amount and distribution of body fat, they can be crucial in the indirect assessment of health status, particularly the risk of cardiovascular and metabolic diseases. This in turn, can help to properly accommodate the changing needs of the population.

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The study aimed to briefly analyse the basic anthropometric characteristics of Ukrainian adolescents against their Polish counterparts. The study was school-based, carried out April–June 2022 and followed a cross-sectional model. It included 642 children from Poland and Ukraine (aged 10–15) who attended ten randomly selected primary schools in Kraków (Poland). Noticeable differences between Polish and Ukrainian adolescents were observed. As the analysed characteristics included features such as the amount and distribution of body fat, they can be crucial in the indirect assessment of health status, particularly the risk of cardiovascular and metabolic diseases. This in turn, can help to properly accommodate the changing needs of the population.

P364 Presence of malnutrition adversely affects short-term clinical outcomes in a sample of patients with Crohn's disease (CD)

Abstract Background Malnutrition in patients with CD has been suggested to affect the disease course, leading to more frequent flare-ups, disease-related complications and longer hospitalizations. The aim of the present study was to assess the effect of malnutrition on several clinical outcomes of patients with CD. Methods Data regarding medical history, disease classification and basic anthropometric characteristics were collected at baseline. Disease activity was assessed endoscopically and using the Harvey-Bradshaw Index (HBI<5 indicates remission). Malnutrition was assessed with the GLIM (Global Leadership Initiative on Malnutrition) criteria and SGA (Subjective Global Assessment). Patients were followed-up at 6 and 12 months and clinical outcomes (need for hospitalization, corticosteroids and antibiotics’ use, change of biologic agents, surgery) were recorded. Results At baseline 237 patients (54.8% males, 41.2±14.1 years, 37.2% with active disease) were evaluated. Prevalence of malnutrition at baseline was 13.5% and 22.9% based on GLIM and SGA, respectively, and was higher in active disease compared to remission (GLIM: 25% vs. 6.7%, p<0.001, SGA: 41.9% vs. 11.5%, p<0.001). Outcomes of 237 patients were recorded at 6 months and of 233 at 12 months. Presence of malnutrition at baseline, according to GLIM criteria, was associated with an increased likelihood of need for intensification or change of biologic agent (OR: 2.66, 95% CI: 1.14-6.24, p=0.02], surgery (OR: 3.73, 95% CI: 1.02-13.70, p=0.04) and overall adverse outcome (OR: 2.33, 95% CI: 0.99-5.49, p=0.05) after adjustment for age, sex, disease location and disease activity at baseline. Similar results were observed when malnutrition was diagnosed with SGA only for need for intensification or change of biologic agent (OR: 5,78 (1,52, 21,92), p=0,01] after adjustment for age, sex, disease location and disease activity at baseline. No statistically significant associations were observed between presence of malnutrition (either diagnosed with GLIM criteria or SGA) and disease-related outcomes at 12 months. Conclusion Presence of malnutrition was associated with short-term (within 6 months) adverse clinical outcomes, such as need to intensify the therapeutic regimen, need for surgical interventions due to disease complications and a worse overall disease outcome in CD patients. No effect of malnutrition diagnosis on the examined clinical outcomes was observed at 12 months of follow-up.

Sedentary behavior in relation to selected indicators of movement and characteristics of children in the lower-secondary school

Introduction: Sedentary behavior (SB) of adolescents is often associated with warning signs of emerging civilization diseases and reduced participation in physical activities (PA). Although some studies point out that SB does not necessarily mean avoiding PA, the opinion of the public prevails, that in addition to the time devoted to sitting during school lessons, the time spent watching monitors and screens is constantly increasing at the expense of PA. Our goal was to determine the indicators of the participation of lower-secondary school students in voluntary SB and to relate them to selected characteristics of their movement behavior or evaluate them from the point of view of compliance with medically recommended criteria. Material and Methods: The research was carried out using objective and subjective measurement techniques during a two-year period with pupils of the lower-secondary schools in the Usti Region (N = 512). A record sheet was used to record data on time indicators of participation in physical and SB and basic anthropometric characteristics. Physical activity was monitored by the Yamax SW-700 and SW-800 pedometer for 7 consecutive days, i.e., during regular school days and weekend days. Results: In daily values of time spent in SB, boys surpass girls. Both boys and girls spend more time voluntarily sitting in front of monitors and mobile phones on weekends than on school days (MBW = 162.0 ± 141.4 min. × MBSD = 129.0 ± 109.8 min.; MGW = 133.0 ± 118.1 min. × MGSD = 121.0 ± 110.1 min.). The time values of weekend days show statistical differences between boys and girls (p = 0.02). As pupils age, the time spent on SB increases. In connection with the volume of voluntary SB, neither the mutual relationship of the time of participation in PA (r = -0.006, p = 0.90) nor the volume of locomotor activities (r = -0.058, p = 0.199) was confirmed. Conclusion: The obtained data confirm the increased level of SB in relation to the recommended criteria. In proportion to the reported time of participation in PA or locomotion indicators, it is not sufficiently compensated. However, in many individuals this behavior is well beyond the tolerated recommended values.

Associations Between Selected Biological Features and Absolute and Relative Swimming Performance of Prepubescent Boys Over a 3-Year Swimming Training Program: A Longitudinal Study.

The study aimed to investigate the effect of 3-year swimming training on selected biological variables in prepubescent male swimmers and to determine the best predictors of absolute (VSa) and relative (VSr) swimming velocity for 50 m and 400 m front crawl. Twenty-one 10-year old boys subjected to endurance swimming training (4 x 70 min per week) and 18 boys consisting a control group were assessed semi-annually for basic anthropometric and respiratory characteristics, breath-hold time (BHT), VO2max, leg explosiveness (HJ), and abdominal strength endurance (ASE). After three years of training, BHT (p < 0.001), VO2max (p < 0.01), HJ (p < 0.01) and ASE (p < 0.01) were greater in the swimmers than in the controls. VSa and VSr expressed as a percentage of baseline velocity increased more for the 50 m than for the 400 m distance (p < 0.001 and p < 0.01, respectively). The 50 m VSa and VSr positively correlated with those obtained for the distance of 400 m (in both cases p < 0.001). Baseline VSa was negatively correlated with the increase in absolute swimming velocity for both distances (50 m: r = -0.684, p < 0.001 and 400 m: r = -0.673, p < 0.001). The best predictors of VSa for 50 m and 400 m front crawl were HJ (r2 = 0.388; p < 0.001) and VO2max (r2 = 0.333; p < 0.001), respectively. The key predictors of VSr for both distances were age (50 m: r2 = 0.340, p < 0.001 and 400 m: r2 = 0.207, p < 0.001) and, after excluding it from analysis, HJ (50 m: r2 = 0.176, p < 0.001 and 400 m: r2 = 0.104, p < 0.001). These results suggest that regardless of prepubescent boys’ initial abilities and exercise capacity, improvement in their swimming performance mainly depends on increases in power and neuromuscular coordination.

Does predicted age at peak height velocity explain physical performance in U13\u201315 basketball female players?

BackgroundThe aims of the study were (1) to identify the physical fitness and basic anthropometric characteristics of Polish female basketball players aged 13–15 years, (2) to show the effect of maturity timing on the performance in motor tests and basic body composition parameters, (3) to identify the index that contributes most to the prediction of performance in the tests of speed, jumping ability, agility, and endurance.MethodsThe sample included 904 female Polish players (U13–15). In part 1, maturity timing category distribution were examined within across age-groups. Maturity timing was followed by grouping with respect to years before or after the observed peak high velocity (PHV): PHV0 (− 0.50 to 0.49), PHV1 (0.50 to 1.49), PHV2 (1.50 to 2.49) and PHV3 (2.50 to 3.49). In part 2, the relationship between the anthropometric variables, physical fitness performance was assessed based on maturity timing categories (ANCOVA analysis). In part 3, backward stepwise multiple regression analyse quantified the relationship between maturity timing (group of PHV) and physical performance.ResultsANCOVA results (age, body height, and body mass as covariates) showed in the U13 female basketball players significantly higher sprinting (20 m), jumping ability and endurance tests results of the PHV1 group. Better results was observed in U14 female players in PHV1 compared to PHV2 and PHV3 in 20 m and jumping tests but opposite trend was observed for 5 m sprint and endurance test (distance covered and VO2max). U15 basketball players from the PHV3 group were characterized by better results of jumping abilities, endurance, 10 m and 20 m sprint and agility (total, S4) tests. Maturity timing (10 m), chronological age (5 m, 20 m, agility, SVJ, VJ, and VO2max tests), body height (10 m), body mass (10 m, 20 m, VJ, VO2max), and the interaction between body mass and height (SVJ) were significant (adjusted R2 = 0.02–0.10; p < 0.001) predictors of motor skills.ConclusionTrainng content of female basketball players aged 13–15 years old should be adjusted to biological requirements especially in jumping, endurance and 20 m sprint test. The time from peak height velocity (PHV) was a significant predictor only in the 10 m sprint test.

Wooden Disposable Tongue Depressor: Can Facilitate Appropriate Reinforced Laryngeal Mask Insertion? A Randomized Controlled Trial.

Background: The reinforced laryngeal mask airway (RLMA) is difficult to insert due to the flexibility of its inner armored shaft. Many authors agreed that the available techniques have some disadvantages. They use materials that are reusable and require resterilization but may not guarantee infection control particularly during pandemics. The standard method can cause contamination and prone the operator to unanticipated trauma to their finger during placement. So this study aimed to evaluate the usefulness of disposable tongue depressors to aid insertion of the reinforced laryngeal mask airway. Methods: A randomized controlled trial included one hundred ninety-four adult patients of either gender American Society of Anesthesiologists (ASA) I and II attended for elective day case surgery under general anesthesia. Patients were randomly categorized into two groups; each group consisted of ninety-seven. In the first group, insertion of the reinforced laryngeal mask airway was done using the standard technique of digital manipulation whereas the second one is the study group where disposable wooden tongue depressor guided insertion was used. The data were analyzed using SPSS version 23. Data were presented as frequencies or means and standard deviations. Chi-Square, Fisher Exact, and t-test were used. P value < 0.05 was considered significant. Results: No significant difference in basic patients' demographic, anthropometric, and clinical characteristics were noticed between the two groups. The insertion time as well as the total time for RLMA placement, was significantly shorter in the new method group. Trauma was significantly less than 2.1% in the new method group compared to the standard group 10.3%, p=0.003). Conclusion: The disposable wood tongue depressor insertion technique helps facilitate the correct placement of the reinforced laryngeal mask airway.

Quality of life, health, eating habits and physical development of middle school adolescents in the Świetokrzyskie.

Measurement of the health-related quality of life is currently one of the significant methods of self-evaluation of heath, enabling the detection of disorders in the biopsychosocial functioning of children and adolescents. The aim of the study was to establish significant relationships between the subjective sense of the health-related quality of life, eating habits and objective parameters of physical development among a group of adolescents. The study applied a diagnostic survey methodology with the use of the KIDSCREEN-52 questionnaire, the Health Behaviour in School-aged Children (HBSC) questionnaire, anthropometric measures of choice, and a self-constructed questionnaire. The significance level was set at p<0.05. The collected data was gathered and analyzed using Statistica 10.0 PL. Three distinct groups of adolescents with a varying subjective sense of the quality of life were identified. The frequency of basic meal consumption among participants showed some abnormalities. This concerned breakfast in particular, which was consumed before going to school by over half of the participants (63.61%), with boys (70.07%) eating it significantly more frequently than girls (57.83%). Indices based on weight-to-height ratios, such as: BMI, Rohrer's Index and Slender Index were significantly greater in value among boys compared with girls. Adolescents from the Świętokrzyskie region, for the most part exhibited a high subjective sense of the quality of life. The physical development of the participants, as far as basic anthropometric characteristics are concerned, was mostly appropriate and consistent with a high subjective sense of the quality of life and exhibited eating habits.

Effect of maturity timing on the physical performance of male Polish basketball players aged 13 to 15\xa0years

The aims of this study were (i) to identify the motor potential and basic anthropometric characteristics of Polish basketball players aged 13 to 15 years, (ii) to demonstrate the effect of maturity timing on the results achieved in motor tests and basic body composition parameters, and (iii) to determine which index contributes most to the prediction of performance in the individual tests of speed, jumping ability, agility, and endurance. The sample included 818 male Polish players. Analysis of values related to age-adjusted characteristics showed that in the under 13-year-old group, early maturers had significantly better results (except for stage 1 in the agility test) than average maturers. However, in the endurance test in the under 14- and 15-year-old groups (both distance covered and VO2max), the average maturers obtained higher values. Furthermore, maturity differentiation in the under 14- and 15-year-old groups significantly affected body size, 20-m sprinting time (under 14-year-old group only), and the results of all jumping tests. ANCOVA results (age, body height, and body mass as covariates) showed better results of early maturers in the under 13-year-old group. The opposite trend was observed in the under 14- to 15-year-old groups, where early maturing individuals performed worse in the running vertical jump (VJ) and endurance tests (both distances covered and VO2max). Maturity timing (VJ and VO2max), chronological age (5 m, 10 m, 20 m, agility, and VO2max tests), body height (all tests), body mass (5 m), and the interaction between body mass and height (10 m, 20 m, agility, standing vertical jump, vertical jump) were significant (adjusted R2 = 0.08–0.25; p < 0.001) predictors of motor skills. These findings can be helpful in quantifying and controlling the results of youth sports programs adjusted to biological requirements used in the training process.

The anthropometric assessment of body composition and nutritional status in children aged 2–15 years: A cross-sectional study from three districts in Bangladesh

Early life nutrition plays a critical role in the development of better health and nutrition in adulthood. However, assessing the nutritional status of Bangladeshi children and adolescents through measurement of body composition using skinfold thickness is barely studied. The current study aims to determine children's body composition and nutritional status, and contributing factors among children aged 2 to 15 years in the northern part of Bangladesh. This is a descriptive cross-sectional study done in Bangladesh. Anthropometric methods, including multiple skinfold thickness and basic anthropometric and socio-demographic characteristics, were used. Body composition was calculated from multiple skinfold thicknesses using the standard regression equation. Nutritional status was measured using Z score according to WHO 2007 reference standard. A total of 330 children from Naogaon, Bogra and Kurigram districts in Bangladesh were examined from April 2019 to September 2019. The Nutritional status of 2-15 years old child is exceedingly poor in the northern part of Bangladesh. Fat mass and fat-free mass were higher among children from Kurigram district than from Bogra and Naogaon district. Body fat percentages and arm fat area were greater among female children than males. The overall prevalence of stunting, underweight and wasting was around 25%, 32% and 29%, respectively, and the rate was higher among girls and children aged 2-5 years. The average SD score for weight-for-age, height-for-age, and BMI-for-age was -1.295, -0.937 and -1.009. The median weight-for-age and height-for-age Z scores of boys and girls were below the WHO reference percentile rank. Girls were twice (OR:1.951, CI:1.150-3.331) as likely to suffer from being underweight than boys. Children who don't practice handwashing are three times (OR:3.531, CI:1.657-7.525) more likely to be underweight. Children become underweight and stunted when their family income is not sufficient to maintain their nutritional requirements. The children of the three northern districts had a poor nutritional status, and family income was the potential contributing factor. Therefore, interventions like the promotion of income-generating activities and integrated approaches to ensuring food diversification could be an option to address the nutritional problem of children of the three northern districts of Bangladesh.

The Motor and Leisure Time Conditioning of Young Table Tennis Players' Physical Fitness.

The purpose of the study was to assess the association between physical fitness and the lifestyle determinants of elite junior table tennis players. The basic anthropometric characteristics (body height and body weight) were collected of 87 Polish table tennis players (girls, n = 38 and boys, n = 49, at different stages of sport training, targeted and specialized) aged 11–17 years. The level of special fitness tests from the Table Tennis Specific Battery Test were used, assessing reaction speed and displacement speed. All eight International Physical Fitness Test trials were also used to determine the level of general fitness of the participants. Selected questions from the Health Behaviour in School-Aged Children questionnaire were asked to measure factors associated with leisure time. The findings confirm a relationship between sedentary forms of leisure time activity and the training of young players at the targeted stage (Z = −2.93, p = 0.003 school days and Z = −2.12, p = 0.034 days off). Moreover, competitors with longer training experience more often chose active forms of spending free time. Knowledge of the global physical activity undertaken by young athletes during their leisure time provides a better understanding of their individual needs and may help young table tennis players to succeed at a world-class level in the future.

Influence of overweight and obesity on the strength of childhood

Introduction: overweight and obesity reach a high prevalence since childhood in Spain. Objective: to describe the effect of overweight and obesity, in schoolchildren of eleven years of age, in tests that assess the strength of both the lower and upper extremities, as well as speed. Method: four hundred and twenty-three schoolchildren of eleven years of age participated in the study. Basic anthropometric characteristics were obtained and several tests of the EUROFIT battery were developed. Results: normal-weight boys and girls had better scores in physical condition tests in general. Therefore, the vertical and horizontal jumps, bar suspension and abdominals were higher in the participants with normal-weight (p < 0.05). In addition, they performed in less time a speed circuit in both sexes (p < 0.001); however, in relation to the manual isometric strength, in the group of girls those who are overweight or obese have better results (p < 0.01). Conclusions: overweight and obese children of eleven year-olds showed a lower muscular performance, except in the case of manual isometric strength. Several equations haven been also determined for predicting the results of physical tests carried out such as jumps, dynamometry and speed, through sex and body mass index (BMI).

Analýza úrovně antropometrických a rychlostních charakteristik tenistů a tenistek ve věku 13–14 let

Strength is important factor impacting performance. Speed manifests not only by court movement,but also in reaction speed and in speed of individual shots. The aim of the paper is to analyze the levelof basic anthropometric (body height, H; body weight, W) and speed characteristics of young Czechtennis players, to assess inter-gender differences and to determine the correlation between individualvariables. The research sample consists of Czech junior male tennis players (n = 221) and female players(n = 217) between the ages of 13 and 14 years. Research data was acquired using test battery TENDIAG1between years 2000 and 2015. Based on the data following basic static characteristics were calculated;for male players n = 212, H = 170.30 ± 8.96 cm, W = 57.20 ± 9.25 kg, AT = 13.56 ± 0.69 s) and forfemale players (n = 217, H = 168.70 ± 12,22 cm, w = 55.85 ± 11.10 kg, AT = 14.05 ± 1.18 s). Substantivesignificance of differences between male and female tennis players was assessed using Cohen’s d. Nosignificance dependence was measured in anthropometric levels between male and female players (H,d = 0.14; W, d = 0.13), medium significance dependence was found in run speed test (d = 0.50) in favor ofmale players. Medium significance dependence between running speed and body height and weightrespectively (r = 0.45, resp. r = 0.43) was demonstrated at male players, small significance betweenrunning speed and body height and weight respectively (r = 0.24, resp. r = 0.16) at female players. Forpurposes of training, co-educated training units can be considered.

Trends in conservative procedures and peripartum hysterectomy rates in severe postpartum haemorrhage

Objective: The objective of this study is to explore whether increase in use of second-line conservative surgical procedures will alter the rate of peripartum hysterectomies in management of severe postpartum haemorrhage (PPH).Methods: This is a retrospective cohort. All pregnant patients with gestation > = 28 weeks with severe PPH (> = 1.5 L) within 72 h of delivery from year 2000 to 2015 (16-year period) in an obstetric training unit was recruited. Basic patient anthropometric characteristics and the main causes for PPH were calculated. The incidence of any second-line conservative surgical procedures and peripartum hysterectomies were evaluated. The total number of patients in each category was then stratified into four 4 years-intervals (4 quadrennium) to compare trends.Results: The incidence of severe PPH gradually increased over the study period (lowest 0.21% in 2002 to 0.76% in 2015) (p < .001). There is an obvious increasing trend in the overall use of second-line surgical procedures from nil to 82% (p < .001), with balloon tamponade constituting up to 48%. The incidence of successful second-line procedures increased gradually from 72.2% in the second quadrennium to 89% in the fourth quadrennium. The total peripartum hysterectomy rate among cases of severe PPH could be seen to drop from 40.2% in the first to 10.9% in the fourth quadrennium (p = .04).Conclusions: Despite the increasing trends in PPH, the increasing utilisation of second-line conservative surgical procedures in severe PPH should be able to reduce the need for peripartum hysterectomy.

Association between body size and selected hematological parameters in men and women aged 45 and above from a hospitalized population of older adults: an insight from the Polish Longitudinal Study of Aging (1960–2000)

In elderly people, anemia occurs with increasing frequency with each advancing decade and can be a harbinger of very serious health conditions, including gastrointestinal bleeding, gastric and duodenal ulcers, and cancer. Therefore, age-dependant changes in hematological parameters deserve special attention. Nonetheless, very few longitudinal studies of aging have focused on possible associations between basic anthropometric characteristics and hematological parameters in older people. Here, we present some evidence that body size can be associated with red blood cell count as well as some other selected hematological parameters in adults aged 45 to 70 years. Longitudinal data on anthropometric and hematological parameters have been obtained from physically healthy residents at the Regional Psychiatric Hospital for People with Mental Disorders in Cibórz, Lubuskie Province, Poland (142 individuals, including 68 men and 74 women). The residents who took psychoactive drugs were excluded from the study. To evaluate the studied relationships, three anthropometric traits were used and three dichotomous divisions of the study sample were made. The medians of body height, body weight, and body mass index at the age of 45 years were used to divide the sample into: shorter and taller, lighter and heavier, and slimmer and stouter individuals, respectively. Student’s t-test, Pearson’s correlation, and regression analysis were employed. The results of the present study suggest that the relationship between body size and red blood cell count is slightly more pronounced in men and its strength depends on age. However, the correlations between body size and red blood cell count proved to be weak in both sexes. With aging, the strength of the relation decreased gradually, which might have been caused by the aging-associated changes in the hematopoietic system, anemia, or was an artifact. Further studies are needed to elucidate the unclear association between body size and hematological parameters in older adults.