scholarly journals Near Points of Convergence and Accommodation in a Population of University Students in IranNear Points of Convergence and Accommodation in a Population of University Students in Iran

2019 ◽  
Author(s):  
Hassan Hashemi ◽  
Mojgan Pakbin ◽  
Babak Ali ◽  
Abbasali Yekta ◽  
Hadi Ostadimoghaddam ◽  
...  
Keyword(s):  
University Students ◽  
Adult Population ◽  
Age Groups ◽  
Multiple Linear Regression Model ◽  
Total Sample ◽  
Cluster Sampling ◽  
Young Student ◽  
Mean Values ◽  
Snellen Chart ◽  
The Mean

Purpose: To determine the distribution of the near point of convergence (NPC) and near point of accommodation (NPA) in a young student population in Iran. Methods: The subjects were selected using a cluster sampling method. All students underwent optometry tests, including visual acuity measurement, refraction, and cover test, as well as ophthalmic examinations. The NPC and NPA were measured using an accommodative target (near Snellen chart). Results: Of 1,595 students, the data of 1,357 were analyzed. The mean NPC and NPA in the total sample were 7.25 cm (95% confidence interval [CI], 7.02 to 7.48) and 9.99 cm (95% CI, 9.69 to 10.29), respectively. Older age was associated with an increase in the NPC, which increased from 6.98 cm in 18–20 years olds to 9.51 cm in those over 30 years. The NPA was significantly associated with age and refractive errors in the multiple linear regression model, increasing from 9.92 cm in 18–20 years olds to 11.44 cm in those over 30 years (P = 0.003). Hyperopic eyes had lower NPA than myopic and emmetropic eyes (P = 0.001). In younger age groups, the mean accommodation amplitude was lower than the mean Hofstetter value. Moreover, with age, especially after 30 years, the mean values surpassed those determined using the Hofstetter formula. Conclusion: The NPC values in this study were lower than those previously reported for identical age groups. The Hofstetter formula is not always an accurate predictor of the accommodation amplitude in the Iranian adult population.

scholarly journals Effects of Refractive Errors and Age on Binocular Function in Normal Adult Population

2020 ◽  
Author(s):  
Xiaodong Zhou ◽  
Man She ◽  
Tao Li ◽  
Qianqian Hu ◽  
Jie Zhu
Keyword(s):  
Adult Population ◽  
Linear Regression Analysis ◽  
Age Groups ◽  
Normal Adult ◽  
Comfort Zone ◽  
Mean Values ◽  
Binocular Function ◽  
The Mean ◽  
The Relationship ◽  
Vision Function

Abstract Purpose: To investigate the relationship between binocular function with gender, ages, and spherical equivalent (SE) .Methods: This observational study enrolled 243 healthy, non-strabismic adults, including 94 men and 149 women aged from 20 to 59 years. The subjects were divided into three groups according to SE: myopic group, emmetropic group and hyperopic group. The subjects were also divided into four groups according to age: 20-29 years group, 30-39 years group, 40-49 years group, and 50-59 years group. The binocular vision function was measured with a synoptophore, including subjective angle (SA), divergence, convergence and fusional vergence range (FVR). Results: The mean values of SA, divergence, convergence and range of fusion for the whole sample group were 3.33±0.16°, 9.72±0.26°, 19.34±0.54°, and 29.06±0.62°, respectively. The mean values of SA and divergence in myopic group were significantly larger than the emmetropic group (both p<0.05). SE, SA, divergence and FVR were significantly different among age groups (all p<0.05). Besides, linear regression analysis showed SE was correlated with SA and divergence (p=0.007, p=0.003). Age was correlated with SE, SA, divergence and FVR (p<0.001, p<0.001, p=0.005, p=0.002, respectively). In addition, the proportion of SA being in comfort zone (defined as the value of SA located in the middle 1/3 area of FVR) in age groups were statistically different. (χ2=8.283, p=0.041)Conclusion: Both SA and motor fusion are associated with age and SE in normal adult population.

scholarly journals Relationship between age, refractive errors and motor fusion in a normal Chinese adult population: a cross-sectional study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Man She ◽  
Tao Li ◽  
Qianqian Hu ◽  
Jie Zhu ◽  
Xiaodong Zhou
Keyword(s):  
Adult Population ◽  
Linear Regression Analysis ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Comfort Zone ◽  
Cross Sectional ◽  
Mean Values ◽  
Chinese Adult ◽  
The Mean

Abstract Background To investigate the relationships between motor fusion and sex, age and spherical equivalent (SE). Methods This observational study enrolled 243 healthy, nonstrabismic adults, including 94 men and 149 women aged 20 to 59 years. The subjects were divided into three groups according to SE: myopic, emmetropic and hyperopic groups. The subjects were also divided into four groups according to age: 20–29, 30–39, 40–49 and 50–59 years groups. Motor fusion was measured with a synoptophore, including subjective angle (SA), divergence, convergence and fusional vergence range (FVR). Results The mean values of divergence, convergence and FVR for the whole sample group were 9.72 ± 0.26°, 19.34 ± 0.54°, and 29.06 ± 0.62°, respectively. A higher value of divergence was found in the myopic group than in the emmetropic group (p < 0.05). SE and divergence were significantly different among age groups (all p < 0.05). In addition, linear regression analysis showed that SE was correlated with divergence (p = 0.003). Age was correlated with SE, divergence and FVR (p < 0.001, p = 0.005, p = 0.002, respectively). In addition, the proportion of SA being in the comfort zone (defined as the value of SA satisfying Percival’s criterion) in the age groups was significantly different (χ2 = 8.283, p = 0.041). Conclusions Motor fusion is associated with age and SE in the normal Chinese adult population.

scholarly journals Determinants of serum 25-hydroxyvitamin D in Hong Kong

2015 ◽  
Vol 114 (1) ◽  
pp. 144-151 ◽  
Author(s):  
Cuiling Xu ◽  
Ranawaka A. P. M. Perera ◽  
Yap-Hang Chan ◽  
Vicky J. Fang ◽  
Sophia Ng ◽  
...  
Keyword(s):  
Vitamin D ◽  
Hong Kong ◽  
Southern China ◽  
Age Groups ◽  
Dietary Vitamin ◽  
Skeletal Health ◽  
Mean Values ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
The Mean

Vitamin D plays an important role in skeletal health throughout life. Some studies have hypothesised that vitamin D may reduce the risk of other diseases. Our study aimed to estimate age-specific and sex-specific serum 25-hydroxyvitamin D (25(OH)D) status and to identify the determinants of serum 25(OH)D status in Hong Kong, a subtropical city in southern China. In 2009–2010, households in Hong Kong were followed up to identify acute respiratory illnesses, and sera from 2694 subjects were collected in three to four different study phases to permit measurement of 25(OH)D levels at different times of the year. A questionnaire survey on diet and lifestyle was conducted among children, with simultaneous serum collection in April and May 2010. The mean of serum 25(OH)D levels in age groups ranged from 39 to 63 nmol/l throughout the year with the mean values in all age groups in spring below 50 nmol/l. Children aged 6–17 years, and girls and women had significantly lower serum 25(OH)D levels than adults, and boys and men, respectively (allP< 0·001). We estimated that serum 25(OH)D levels in Hong Kong followed a lagged pattern relative to climatic season by 5 weeks with lowest observed levels in early spring (March). For children aged 6–17 years, reporting a suntan, having at least 1 servings of fish/week and having at least 1 serving of eggs/week were independently associated with higher serum 25(OH)D levels. Adequate sunlight exposure and increased intake of dietary vitamin D could improve vitamin D status, especially for children and females in the winter and spring.

​Impact of Extreme Hot Environmental Temperature Period on Marker Enzymes of Carbohydrate Metabolism in Non-descript Sheep from Arid Tracts of Rajasthan

2021 ◽  
Author(s):  
Anandita Srivastava ◽  
Nalini Kataria
Keyword(s):  
Carbohydrate Metabolism ◽  
Environmental Temperature ◽  
Age Groups ◽  
Extreme Temperature ◽  
Mean Value ◽  
Marker Enzymes ◽  
Mean Values ◽  
The Mean ◽  
The Impact ◽  
Enzymes Of Carbohydrate Metabolism

Background: The present investigation was envisaged to find out the impact of extreme hot environmental temperature period (ETP) on marker enzymes of carbohydrate metabolism in male and female non-descript sheep of various age groups i.e. 4 to 13 months from arid tracts of Rajasthan. Glucose-6-phosphate dehydrogenase (G-6-PDH) and malate dehydrogenase (MDH) marker enzymes of carbohydrate metabolism were considered for study. Methods: During the period October 2016-June 2017 blood samples were collected to harvest sera for spectrophotometric method from 240 healthy animals selected from private slaughter house during moderate and extreme hot environmental temperature periods (ETPs). The mean values of markers attained during moderate ETP were reckoned as the control. It was 10.00 ± 0.10 UL-1 and 42.00±1.00 respectively. Conclusion: The mean value of MDH was significantly (p≤0.05) higher while G-6-PDH significantly (p≤0.05) lowers during extreme hot temperature in comparison to moderate period. Therefore, it could be concluded that variations in enzyme markers were associated with changes in environmental temperatures. Probably ETP were able to produce a profound effect on carbohydrate metabolism in sheep. Therfore it can be suggested that during the period of extreme temperature balanced ration must be provided to the animal along with proper management to decrease the severity of temperature impact.

scholarly journals OR30-01 Real-World Minimed™ 670G System Use and Glycemic Outcomes of Pediatric and Adult Individuals Living with Type 1 Diabetes (T1D) in the United States

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Robert Alan Vigersky ◽  
Michael Stone ◽  
Pratik Agrawal ◽  
Alex Zhong ◽  
Kevin Velado ◽  
...  
Keyword(s):  
Glycemic Control ◽  
Real World ◽  
Adult Population ◽  
Age Groups ◽  
The United States ◽  
System Use ◽  
System Data ◽  
The Mean ◽  
The Impact ◽  
The U.S

Abstract Introduction: The MiniMed™ 670G system was FDA-approved in 2016 for adults and adolescents ≥14yrs, and in 2018 for children ages 7-13yrs with T1D. Since then, use of the system has grown to over 180,000 people in the U.S. The glycemic control benefits of real-world MiniMed™ 670G system Auto Mode use in the U.S. were assessed. Methods: System data (aggregated five-minute instances of sensor glucose [SG]) uploaded from March 2017 to July 2019 by individuals (N=118,737) with T1D and ≥7yrs of age who enabled Auto Mode were analyzed to determine the mean % of overall time spent &lt;54mg/dL/&lt;70mg/dL (TBR); between 70-180mg/dL (TIR); and &gt;180mg/dL/&gt;250mg/dL (TAR). The impact of Auto Mode was further assessed in a sub-group of individuals (N=51,254) with, at least, 7 days of SG data for both Auto Mode turned ON and turned OFF. The % of TIR, TBR and TAR, and the associated glucose management indicator (GMI) were evaluated for the overall OFF (2,524,570 days) and ON (6,308,806 days) periods, and across different age groups. Results: System data TIR was 71.3%; TBR was 0.4% and 1.9%, respectively; and TAR was 26.8% and 6.2%, respectively. User-wise data of Auto Mode OFF versus ON showed a mean of 70.3% of the time spent in Auto Mode, that TIR increased from 60.9% to 69.9%; and that both TBR and TAR decreased. For those 7-13yrs (N=1,417), TIR increased from 48.7% to 61.5%; TBR increased from 0.5% to 0.6% and from 2.0% to 2.2%, respectively; and TAR decreased from 49.3% to 36.3% and from 20.5% to 13.0%, respectively. For those 14-21yrs (N=4,194), TIR increased from 51.0% to 61.5%; TBR decreased from 0.7% to 0.6% and from 2.3% to 2.0%, respectively; and TAR decreased from 46.7% to 36.5% and from 18.5% to 12.5%, respectively. For those ≥22yrs (N=45,643), TIR increased from 62.2% to 70.9%; TBR decreased from 0.7% to 0.5% and from 2.6% to 1.9%, respectively; and TAR decreased from 35.2% to 27.3% and from 9.9% to 6.3%, respectively. The mean GMI decreased by 0.23% (overall), 0.48% (7-13yrs), 0.35% (14-21yrs), and 0.22% (≥22yrs), respectively, with Auto Mode ON versus OFF. Discussion: In over 6 million days of real-world MiniMed™ 670G system Auto Mode use in the U.S., TIR of a large pediatric and adult population with T1D improved by 9% compared to when Auto Mode was OFF, which was comparable to or exceeded the TIR observed in the smaller pivotal trials. These results further support outcomes of the pivotal trials and increased glycemic control with system use.

Blood and plasma volume in adult males

1962 ◽  
Vol 17 (2) ◽  
pp. 195-198 ◽  
Author(s):  
Marvin J. Yiengst ◽  
Nathan W. Shock
Keyword(s):  
Plasma Volume ◽  
Age Groups ◽  
Dilution Method ◽  
Total Blood Volume ◽  
Adult Males ◽  
Age Changes ◽  
Total Blood ◽  
Mean Values ◽  
The Mean ◽  
Blood Volumes

Total blood volumes were estimated in 94 normal ambulatory males, aged 19–95 years, by the T-1824 dye dilution method. There were no significant age changes when results were expressed in terms of either body weight or surface area. The mean values for individual age groups between 40'49 and 80'95 years varied between 46.7 ± 1.5 and 51.5 ± 1.5 ml/kg body wt. for plasma volume and between 75.1 ± 2.0 and 82.3 ± 2.0 ml/kg body wt. for total blood volume. Submitted on October 16, 1961

scholarly journals Assessment of the TMJ Dysfunction Using the Computerized Facebow Analysis of Selected Parameters

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Edward Kijak ◽  
Danuta Lietz-Kijak ◽  
Bogumiła Frączak ◽  
Zbigniew Śliwiński ◽  
Jerzy Margielewicz
Keyword(s):  
Age Groups ◽  
Mouth Opening ◽  
Mean Value ◽  
Qualitative And Quantitative Analysis ◽  
Temporomandibular Joint Dysfunction ◽  
Mean Values ◽  
Qualitative And Quantitative ◽  
Maximum Value ◽  
Function Test ◽  
The Mean

The Purpose of the Paper.Qualitative and quantitative analysis of selected parameters of mandible movements, electronically registered in patients with temporomandibular joint dysfunction and healthy ones.Material. Function test of the mandible movements was conducted in 175 patients. Gender distribution was 143 women and 32 men, aged 9 to 84.Methods. The studied population, after accurate clinical examination, was divided into age groups with the range of five years. All the patients had Zebris JMA computerized facebow examination done, according to the generally accepted principles and procedures.Results.Mean values of mouth opening calculated to 45.6 mm in healthy group and 37.6 mm in TMJ dysfunction group. Mean length of condylar path amounted to39±7% of the maximum value of mouth opening in the group of healthy people,44±11% in the case of muscle-based disorders, and35±11% with joint-based. The mean value of the condylar path inclination oscillated in the range of 25° to 45°.Conclusions. The ratio of length of the condylar path to the size of mouth opening may be a significant value characterising the type and degree of intensification of the TMJ dysfunctions.

Extension of Future Time Perspective in Motivational Goals of Different Age Groups

1980 ◽  
Vol 3 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Willy Lens ◽  
Antoine Gailly
Keyword(s):  
Time Perspective ◽  
Adult Population ◽  
Age Groups ◽  
Life Time ◽  
Future Time Perspective ◽  
Future Time ◽  
Cross Sectional ◽  
Age Related ◽  
Future Extension ◽  
The Mean

Age related differences in extension of future time perspective in motivational goals are studied at three socio-economic levels in a representative sample of the French speaking adult population in Belgium. The hypothesis of an inverted U-shaped relationship between age and extension of future time perspective is tested statistically. It cannot be maintained when using two indices of future extension that are borrowed from earlier studies in this field: (a) the proportion of number of references to the near future to the number of references to the distant future, and (b) the mean future extension score in number of years. The proportion of the mean future extension score to the statistically calculated expected life time is proposed as a new and better index of future extension for comparing different age groups. With this new index the hypothesis is confirmed at the three socioeconomic levels. The limits of the cross-sectional method that is used and the relative value of the new index of extension of future time perspective are discussed.

scholarly journals Body composition and maximal oxygen consumption in adult soccer players in the Republic of Macedonia

2015 ◽  
Vol 5 (3) ◽  
pp. 85-92
Author(s):  
Jasmina Pluncevikj Gligoroska ◽  
Sanja Manchevska ◽  
Ljudmila Efremova ◽  
Lidija Todorovska ◽  
Slobodan Nikolic
Keyword(s):  
Body Composition ◽  
Oxygen Consumption ◽  
Muscle Mass ◽  
Body Mass ◽  
Body Fat ◽  
Maximal Oxygen Consumption ◽  
Age Groups ◽  
Total Sample ◽  
Soccer Players ◽  
Mean Values

Introduction: The purpose of this study was to investigate the relationship between active and passive body mass components and maximal aerobic consumption (VO2max) in adult male soccer players.Methods: The study involved seven hundred (700) male soccer players, mean age 25.06 ± 4.41 years (range 18 to 35), divided in six age groups. Body composition was assessed according the anthropometric protocol by Matiegka, and relative muscle mass (MM%), bone (BM%) and fat (BF%)  and absolute muscle mass (MMkg), bone (BMkg) and fat (BFkg) components were calculated. The Bruce protocol (incremental multistage treadmill test) was used for the estimation of maximal oxygen consumption.Results: Mean values of body mass components for total sample were as follows: muscle mass (MM%)= 52.75 ± 2.63%, bone mass (BM%)=16.63 ± 1.29% and body fat (BF%)=14.12 ± 1.54%.  Mean VO2max was 48.89±5.17 ml/kg/minute. Relative muscle mass (MM%) showed similar values across age different groups (ANOVA: F=2.174; p=0.06) while absolute muscle mass (MMkg) showed tendency of increment with age (ANOVA: F=2.136; p=0.01). Body fat (BFkg and BF%) was statistically higher in the older groups (ANOVA F=3.737; p<0.01; ANOVA F=4.117; p<0.01). Weak positive correlation between VO2 max and muscle component (r=0.243; p<0.001) and a weak negative correlation between VO2max and body fat (r=-0.08;p<0.05) were found.Conclusions: Our results confirm the assumption that subjects with larger muscle mass have greater endurance and higher maximal oxygen consumption compared to subjects with larger body fat component. 

scholarly journals Current Status of Periodontal Disease in Adults in Takahagi, Japan:A Cross-sectional Study

2020 ◽  
Author(s):  
Satoshi Sekino ◽  
Ryoichi Takahashi ◽  
Yukihiro Numabe ◽  
Hiroshi Okamoto
Keyword(s):  
Periodontal Disease ◽  
Japanese Population ◽  
Adult Population ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Current Status ◽  
Cross Sectional ◽  
Probing Depth ◽  
Tooth Surfaces ◽  
The Mean

Abstract Background : To date, a few studies have documented the detailed periodontal conditions of a Japanese population. It is important to know if the awareness of Japanese nationals and dentists regarding oral hygiene and prevention of periodontal disease have improved when compared with the past in Japan for the development of future scenarios regarding prevention. The aim of this study was to investigate the severity, prevalence, and extent of periodontal disease in the adult population of the city of Takahagi, Japan. Results were also compared with those of an epidemiological study performed in Japan in the 1980s. Methods : A total of 582 (aged 20 to 89 years) randomly sampled Takahagi residents answered a comprehensive questionnaire and participated in clinical examinations. Results : The mean percentages of tooth surfaces harboring plaque and exhibiting BOP were 59.5 ± 24.9% and 31.1 ± 21.1%, respectively. The mean PPD and CAL were 2.5 ± 0.5 mm and 2.9 ± 1.0 mm, respectively. Compared with results of the 1980s survey, the mean percentages of plaque and bleeding on probing were lower in the current population. The mean CAL and prevalence of attachment loss of ³5 mm in some age groups were higher in the present study than in the 1980s study. There were no statistically significant differences with respect to mean probing depth between the 1980s and current age groups. Conclusions : Periodontal disease was still prevalent in the current Japanese population, even though some improvement occurred. Proper public health programs therefore need to be established.

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