scholarly journals Consumption dietary sources of lycopene, lutein, and zeaxanthin among young adults living in megapolis

10.5219/1633 ◽  
2021 ◽  
Vol 15 ◽  
pp. 917-925
Author(s):  
Aleksei Korolev ◽  
Ekaterina Kirpichenkova ◽  
Elena Nikitenko ◽  
Elena Denisova ◽  
Elena Fanda ◽  
...  
Keyword(s):  
Young Adults ◽  
Age Groups ◽  
Natural Antioxidants ◽  
Age Related Macular Degeneration ◽  
Visual Performance ◽  
Active Forms Of Oxygen ◽  
Food Frequency ◽  
Age Related ◽  
Spring Onion ◽  
Study Participants

Carotenoids are natural antioxidants, affecting apoptosis, absorbing active forms of oxygen, and improving visual performance through their blue light filtering capabilities. Lutein and zeaxanthin are carotenoids of the macular pigment that play a significant role in protecting against age-related macular degeneration (AMD), cataracts, and diabetic retinopathy. We analyzed the dietary sources of lycopene, lutein, and zeaxanthin of young adults living in a megapolis. We analyzed 431 food frequency questionnaires and used two different criteria for comparison: age (groups A1 and A2) and season (groups S1, spring, and S2, autumn). Raw red tomatoes and eggs are the main sources of carotenoids for the majority of respondents regardless of age and season. Significant differences between age groups were found for parsley, carrot, cheeseburger, and spring onion. Foods with high levels of carotenoids (tomato juice, pumpkin, spinach, and sprouts) were absent in the diets of most of the study participants. Watermelons and persimmons are seasonal sources of lycopene, lutein, and zeaxanthin. Dietary sources of carotenoids are present in insufficient quantities in the diets. Foods with high levels of lycopene, lutein, and zeaxanthin are absent or only occasionally included in the diet.

Preliminary Findings on the Optimization of Visual Performance in Patients with Age-Related Macular Degeneration Using Biofeedback Training

2018 ◽  
Vol 44 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Mirella T. S. Barboni ◽  
Zsuzsanna Récsán ◽  
Zsuzsanna Szepessy ◽  
Mónika Ecsedy ◽  
Balázs Vince Nagy ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Age Related Macular Degeneration ◽  
Visual Performance ◽  
Biofeedback Training ◽  
Age Related

Changes in the Dynamic Stability of Walking in Active Healthy Older Adults Independent of Changes in Walking Speed

2008 ◽  
Author(s):  
Hyun Gu Kang ◽  
Jonathan B. Dingwell
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Dynamic Stability ◽  
Walking Speed ◽  
Age Groups ◽  
Leg Strength ◽  
Age Related ◽  
Increased Risk ◽  
Risk Of Falls ◽  
Walking Speeds

Older adults commonly walk slower, which many believe helps improve their walking stability. However, they remain at increased risk of falls. We investigated how differences in age and walking speed independently affect dynamic stability during walking, and how age-related changes in leg strength and ROM affected this relationship. Eighteen active healthy older and 17 younger adults walked on a treadmill for 5 minutes each at each of 5 speeds (80–120% of preferred). Local divergence exponents and maximum Floquet multipliers (FM) were calculated to quantify each subject’s responses to small inherent perturbations during walking. These older adults exhibited the same preferred walking speeds as the younger subjects (p = 0.860). However, these older adults still exhibited greater local divergence exponents (p<0.0001) and higher maximum FM (p<0.007) than young adults at all walking speeds. These older adults remained more unstable (p<0.04) even after adjusting for declines in both strength and ROM. In both age groups, local divergence exponents decreased at slower speeds and increased at faster speeds (p<0.0001). Maximum FM showed similar changes with speed (p<0.02). The older adults in this study were healthy enough to walk at normal speeds. However, these adults were still more unstable than the young adults, independent of walking speed. This greater instability was not explained by loss of leg strength and ROM. Slower speeds led to decreased instability in both groups.

Dental Caries Prevalence in Early Polynesians from the Hawaiian Islands

1986 ◽  
Vol 65 (6) ◽  
pp. 935-938 ◽  
Author(s):  
H.J. Keene
Keyword(s):  
Young Adults ◽  
Alveolar Bone ◽  
Dental Health ◽  
Age Groups ◽  
Root Surface ◽  
Caries Prevalence ◽  
Tooth Structure ◽  
Age Related ◽  
Caries Lesions ◽  
Root Surface Caries

We examined the skeletal remains of 1338 early Hawaiians (preserved in the Bishop Museum, Honolulu) to determine total caries and root surface caries prevalence. Specimens from seven islands were represented in the collection. Estimation of age at death was made by a combination of dental developmental staging for younger individuals and occlusal attrition and/or alveolar bone loss in adults. Museum records were also consulted for age estimation of adults which was primarily based on osteological criteria. The material was divided into six age groups. Predentate infants and edentulous adults were not included. A total of 19,425 teeth was examined. Caries lesions were observed in 462 individuals (34.5%) and 1895 teeth (9.8%). Coronal caries lesions in children and adolescents tended to be small and not particularly destructive of tooth structure. Root surface lesions in young adults were also small but increased progressively in size in the older groups, resulting in pulp exposure and coronal amputation. Although coronal caries was apparently not a significant dental health problem in children and young adults (compared with contemporary Hawaiians), root surface caries was an increasingly important source of tooth morbidity and tooth mortality in the older population groups. This age-related caries pattern was similar for all of the islands.

scholarly journals The Dynamic Motor Control Index as a Marker of Age-Related Neuromuscular Impairment

2021 ◽  
Vol 13 ◽  
Author(s):  
Ashley N. Collimore ◽  
Ashlyn J. Aiello ◽  
Ryan T. Pohlig ◽  
Louis N. Awad
Keyword(s):  
Motor Control ◽  
Age Groups ◽  
Neuromuscular Control ◽  
Muscle Synergies ◽  
Age Related ◽  
Index Study ◽  
Two Measures ◽  
Study Participants ◽  
Young Old ◽  
Neuromuscular Impairment

Biomarkers that can identify age-related decline in walking function have potential to promote healthier aging by triggering timely interventions that can mitigate or reverse impairments. Recent evidence suggests that changes in neuromuscular control precede changes in walking function; however, it is unclear which measures are best suited for identifying age-related changes. In this study, non-negative matrix factorization of electromyography data collected during treadmill walking was used to calculate two measures of the complexity of muscle co-activations during walking for 36 adults: (1) the number of muscle synergies and (2) the dynamic motor control index. Study participants were grouped into young (18–35 years old), young-old (65–74 years old), and old–old (75+ years old) subsets. We found that the dynamic motor control index [χ2(2) = 9.41, p = 0.009], and not the number of muscle synergies [χ2(2) = 5.42, p = 0.067], differentiates between age groups [χ2(4) = 10.62, p = 0.031, Nagelkerke R2 = 0.297]. Moreover, an impairment threshold set at a dynamic motor control index of 90 (i.e., one standard deviation below the young adults) was able to differentiate between age groups [χ2(2) = 9.351, p = 0.009]. The dynamic motor control index identifies age-related differences in neuromuscular complexity not measured by the number of muscle synergies and may have clinical utility as a marker of neuromotor impairment.

scholarly journals Differences Between Young and Older Adults in Working Memory and Performance on the Test of Basic Auditory Capabilities†

2022 ◽  
Vol 12 ◽  
Author(s):  
Larry E. Humes ◽  
Gary R. Kidd ◽  
Jennifer J. Lentz
Keyword(s):  
Older Adults ◽  
Working Memory ◽  
Young Adults ◽  
Hearing Loss ◽  
Auditory Processing ◽  
Local Community ◽  
Age Groups ◽  
Age Group ◽  
Regression Analyses ◽  
Age Related

The Test of Basic Auditory Capabilities (TBAC) is a battery of auditory-discrimination tasks and speech-identification tasks that has been normed on several hundred young normal-hearing adults. Previous research with the TBAC suggested that cognitive function may impact the performance of older adults. Here, we examined differences in performance on several TBAC tasks between a group of 34 young adults with a mean age of 22.5 years (SD = 3.1 years) and a group of 115 older adults with a mean age of 69.2 years (SD = 6.2 years) recruited from the local community. Performance of the young adults was consistent with prior norms for this age group. Not surprisingly, the two groups differed significantly in hearing loss and working memory with the older adults having more hearing loss and poorer working memory than the young adults. The two age groups also differed significantly in performance on six of the nine measures extracted from the TBAC (eight test scores and one average test score) with the older adults consistently performing worse than the young adults. However, when these age-group comparisons were repeated with working memory and hearing loss as covariates, the groups differed in performance on only one of the nine auditory measures from the TBAC. For eight of the nine TBAC measures, working memory was a significant covariate and hearing loss never emerged as a significant factor. Thus, the age-group deficits observed initially on the TBAC most often appeared to be mediated by age-related differences in working memory rather than deficits in auditory processing. The results of these analyses of age-group differences were supported further by linear-regression analyses with each of the 9 TBAC scores serving as the dependent measure and age, hearing loss, and working memory as the predictors. Regression analyses were conducted for the full set of 149 adults and for just the 115 older adults. Working memory again emerged as the predominant factor impacting TBAC performance. It is concluded that working memory should be considered when comparing the performance of young and older adults on auditory tasks, including the TBAC.

Abstract TP244: Age-Related Disparities in Door-to-Needle Times: It’s Not What You Think

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Christian J Burrell ◽  
Kristin P Guilliams ◽  
Jennifer A Williams ◽  
Laura Heitsch ◽  
Peter Panagos ◽  
...  
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Adult Population ◽  
Univariate Analysis ◽  
Multivariable Analysis ◽  
Age Groups ◽  
Retrospective Chart Review ◽  
Stroke Mimics ◽  
Age Related ◽  
Forward Stepwise

Introduction: Delays in door-to-needle time (DNT) for tPA administration are associated with worse outcomes after acute ischemic stroke (AIS). Studies suggest tPA is safe and effective in young adults, though the effect of age on timeliness of tPA decision making is unknown. In the young adult population, lower frequency of stroke and higher frequency of stroke mimics may lead to DNT delays. We tested the hypothesis that DNT are longer in young adults with AIS. Methods: From 1/2009 to 3/2016, patient demographics and tPA metrics were prospectively collected on all tPA-treated patients at a large, urban academic hospital. Discharge diagnosis (including stroke mimics) and symptomatic intracranial hemorrhage (sICH) rates were collected by retrospective chart review. DNT was compared between young (age ≤ 45) and older adults (age > 45) and across four age groups: ≤45, 46-65, 66-85, and ≥86. Univariate analysis evaluated associations between DNT and baseline characteristics (age, race, sex, admission year, onset-to-arrival time, and admission NIHSS), followed by forward stepwise linear regression including variables with P<0.2 on univariate analysis. Results: Of 560 patients treated with tPA, 63 (11%) were age ≤45 and 497 (89%) were age > 45. Mean DNT was 63 minutes in young adults compared to 50 minutes in older adults (P=0.002). Across four age groups, DNTs were longer in young adults (P=0.027, Figure). In multivariable analysis, age ≤45 (P=0.012), lower NIHSS (P=0.006), and more remote admission year (P=0.001) independently predicted longer DNT. Stroke mimics were more frequent in young adults: 32% vs 7% (P<0.001), though mean DNT remained longer in young adults after excluding mimics: 63 vs 49 min (P=0.008). sICH rate was similar in both groups: 0% vs 4.2% (p=0.10). Conclusions: Despite established safety and efficacy of tPA in young adults, we found DNT delays in this population. Further studies are needed to confirm this finding and address age-related disparities in DNT.

Perceptual Training and Figure-Ground Performance in Low Vision

1990 ◽  
Vol 84 (5) ◽  
pp. 204-206 ◽  
Author(s):  
M. Trudeau ◽  
O. Overbury ◽  
B. Conrod
Keyword(s):  
Macular Degeneration ◽  
Low Vision ◽  
Relative Effectiveness ◽  
Age Related Macular Degeneration ◽  
Specific Training ◽  
Perceptual Training ◽  
Perceptual Skills ◽  
Age Related ◽  
Home Training ◽  
Study Participants

This study examined the utility of perceptual training with specific emphasis on figure-ground discrimination. Study participants had low vision which was caused by age-related macular degeneration. The authors studied the relative effectiveness of in-clinic and at-home training in comparison with a no-training condition. The results supported the hypothesis that perceptual skills, such as figure-ground discrimination, can be improved by practice and instruction. The need for task-specific training is also discussed.

scholarly journals Effects of Age on the Neural Correlates of Familiarity as Indexed by ERPs

2012 ◽  
Vol 24 (5) ◽  
pp. 1055-1068 ◽  
Author(s):  
Tracy H. Wang ◽  
Marianne de Chastelaine ◽  
Brian Minton ◽  
Michael D. Rugg
Keyword(s):  
Young Adults ◽  
Recognition Memory ◽  
Recognition Performance ◽  
Age Groups ◽  
Neural Correlates ◽  
Recognition Memory Test ◽  
Test Items ◽  
Related Difference ◽  
Age Related ◽  
Memory Signals

ERPs were recorded from samples of young (18–29 years) and older (63–77 years) participants while they performed a modified “remember–know” recognition memory test. ERP correlates of familiarity-driven recognition were obtained by contrasting the waveforms elicited by unrecollected test items accorded “confident old” and “confident new” judgments. Correlates of recollection were identified by contrasting the ERPs elicited by items accorded “remember” and confident old judgments. Behavioral analyses revealed lower estimates of both recollection and familiarity in older participants than in young participants. The putative ERP correlate of recollection—the “left parietal old–new effect”—was evident in both age groups, although it was slightly but significantly smaller in the older sample. By contrast, the putative ERP correlate of familiarity—the “midfrontal old–new effect”—could be identified in young participants only. This age-related difference in the sensitivity of ERPs to familiarity was also evident in subgroups of young and older participants, in whom familiarity-based recognition performance was equivalent. Thus, the inability to detect a reliable midfrontal old–new effect in older participants was not a consequence of an age-related decline in the strength of familiarity. These findings raise the possibility that familiarity-based recognition memory depends upon qualitatively different memory signals in older and young adults.

scholarly journals Serum and macular response to carotenoid-enriched egg supplementation in human subjects: the Egg Xanthophyll Intervention clinical Trial (EXIT)

2017 ◽  
Vol 117 (1) ◽  
pp. 108-123 ◽  
Author(s):  
David Kelly ◽  
John M. Nolan ◽  
Alan N. Howard ◽  
Jim Stack ◽  
Kwadwo O. Akuffo ◽  
...  
Keyword(s):  
Visual Function ◽  
Human Subjects ◽  
Age Related Macular Degeneration ◽  
Visual Performance ◽  
Controlled Study ◽  
Serum Concentrations ◽  
Post Intervention ◽  
Age Related ◽  
And Control ◽  
Single Blind

AbstractThe macular carotenoids lutein (L), zeaxanthin (Z) and meso-zeaxanthin (MZ) accumulate at the macula, where they are collectively referred to as macular pigment (MP). Augmentation of this pigment, typically achieved through diet and supplementation, enhances visual function and protects against progression of age-related macular degeneration. However, it is known that eggs are a rich dietary source of L and Z, in a highly bioavailable matrix. In this single-blind placebo-controlled study, L- and MZ-enriched eggs and control non-enriched eggs were fed to human subjects (mean age 41 and 35 years, respectively) over an 8-week period, and outcome measures included MP, visual function and serum concentrations of carotenoids and cholesterol. Serum carotenoid concentrations increased significantly in control and enriched egg groups, but to a significantly greater extent in the enriched egg group (P<0·001 for L, Z and MZ). There was no significant increase in MP in either study group post intervention, and we saw no significant improvement in visual performance in either group. Total cholesterol increased significantly in each group, but it did not exceed the upper limit of the normative range (6·5 mmol/l). Therefore, carotenoid-enriched eggs may represent an effective dietary source of L, Z and MZ, reflected in significantly raised serum concentrations of these carotenoids, and consequentially improved bioavailability for capture by target tissues. However, benefits in terms of MP augmentation and /or improved visual performance were not realised over the 8-week study period, and a study of greater duration will be required to address these questions.

scholarly journals The prevalence of eye diseases in the elderly population is a global problem of modernity

2021 ◽  
Vol 65 (1) ◽  
pp. 62-68
Author(s):  
Dmitry A. Konyaev ◽  
Evgenia B. Popova ◽  
Anton A. Titov ◽  
Nikolay M. Agarkov ◽  
Maksim M. Yablokov ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Vision Loss ◽  
Practical Importance ◽  
Age Groups ◽  
The Elderly ◽  
Eye Diseases ◽  
Age Related Macular Degeneration ◽  
Scientific Review ◽  
Age Related ◽  
High Prevalence

The priority problem of various industrial and developing countries, which largely determine the health of the population and, above all, older age groups, is currently eye diseases. Most modern researchers consider age-related macular degeneration, glaucoma, and cataracts to be eye diseases. Socially significant eye diseases have a high prevalence and are the leading cause of blindness in various countries. Authors analyzed the prevalence of glaucoma, age-related macular degeneration, and cataracts according to domestic and foreign publications in recent years. The results of the studies considered in the scientific review indicate a continuing gain in socially significant eye diseases, the frequency of which increases with age. The high incidence of the studied pathology is observed in China, India, and Russia. The study shows socially significant eye diseases to be the most critical problem in various countries, including the Russian Federation. The relevance of this pathology will increase due to the ongoing aging of the population and an increase in their share in the demographic structure of many states. The high prevalence of age-related macular degeneration, cataracts, and glaucoma leads to an increase in the number of people on the planet with complete or partial vision loss, which significantly disrupts their social functioning and requires significant financial costs for treatment and ensuring an acceptable level and quality of life. The data presented in the review and obtained results are of practical importance for the organization of monitoring of eye diseases and the development of an appropriate state and health strategy.

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