Effect of Ageing and Occupational Activity on Active Wakefulness

Gerontology ◽  
1979 ◽  
Vol 25 (6) ◽  
pp. 337-344 ◽  
Author(s):  
F. Lille ◽  
F. Cheliout ◽  
Y. Burnod ◽  
P. Hazemann
Author(s):  
K. I. Zasjad’ko ◽  
A. V. Bogomolov ◽  
S. K. Soldatov ◽  
A. P. Vonarshenko ◽  
A. F. Borejchuk ◽  
...  

Introduction.The study is aimed to determine possible use of vocal signal analysis for diagnosis of functional states in air traffic control operators, with justifying selection of informative parameters of intonation structure of speech.Materials and methods.Experiments on semi-natural simulator complex with participation of 16 air traffic male dispatchers modelled occupational activity of air traffic dispatcher with moderate (6 aircrafts controlled) and intense (7–12 aircrafts controlled) work load. Duration of simulated working shiftwas 6 hours. Registration covered characteristics of main vocal tone of the examinees, with calculation of 8 jitter-factors that portrayed mirco-changes of main vocal tone curve and 2 tremor indices disclosing periodic waves of 4–16 Hz in main vocal tone curve. Functional state of the dispatchers was assessed via cardiac rhythm parameters. Reliability and work capacity of the dispatchers corresponded to correct radio traffi c, changes in threshold of reception and transfer of aircrafts in number of allowable dangerous approach of aircrafts, time to detection of input aircraft’s deviation from preset flight line.Results and discussion.According to analysis of the experiments results, some parameters of the main vocal tone carried significant changes both in first (simulated moderate work load) and second (simulated intense work load) experimental series.The data obtained prove lower level of psychic regulation of the dispatchers’ occupational activity during 3rd to 5thhours of “working shift” in the first experimental series and from 2nd to 4thhours of the second experimental series, due to decreased psychophysiologic resources and developing fatigue.Conclusion.Studies of changes in indicators of intonation structure of speech in occupational activity of air traffic dispatchers demonstrated that using such indicators provides adequate diagnosis of the functional state. The most informative indicators are average value, histogram asymmetry and excessive frequency of main vocal tone, duration of pauses between words of the dispatchers’ commands and fi ft h jitter-factor.


PEDIATRICS ◽  
1996 ◽  
Vol 97 (5) ◽  
pp. 628-628

Objective. Our purpose was to evaluate factors associated with preterm birth among a national sample of U.S. nurses. Study Design. We conducted a case-control study of 210 nurses whose infants were delivered prematurely (<37 weeks) (cases) and 1260 nurses whose infants were delivered at term (≥37 weeks) (controls). An occupational fatigue score was constructed from four sources and varied from 0 to 4. The relation between occupational activity (including hours working and fatigue score) and preterm birth was analyzed with the use of Pearson χ2 tests, estimates of odds ratios with 95% confidence intervals, and multivariate logistic regression; we controlled for confounding factors. Results. Factors significantly associated with preterm birth included hours worked per week (P < .002), per shift (P < .001), and while standing (P < .001); noise (P = .005); physical exerton (P = .01); and occupational fatigue score (P < .002). The adjusted odds ratios were 1.6 (P = .006) for hours worked per week (≤36 vs ≶ 36) and 1.4 (P = .02) for fatigue score <3 vs ≥3. Conclusions. Preterm birth among working women may be related to hours worked per day or week and to adverse working conditions.


2019 ◽  
Vol 98 (5) ◽  
pp. 509-514
Author(s):  
T. N. Vasileva ◽  
I. V. Fedotova

Introduction. In this paper, the authors presented findings of comparative psychodiagnostics of certain indices of personality sphere of accountants before and after implementation of the author’s training program “11 steps of perfection”. material and methods. Two preferable behavior strategies (“Collaboration and “Compromise”) of accountants in conflict situation were revealed. Pronounced levels of indices of reticence, emotional instability, anxiety and lower levels of indices of functional status were found in elder accountants. Results of approbation of the training program aimed to form a positive dynamics of personality sphere indices in this occupational group provided evidence about the effectiveness of this program. conclusion. The decrease of levels of indices of reticence, emotional instability, anxiety; elevated levels of indices of functional status; the broadening of behavior strategy spectrum in a conflict situation was observed.


2016 ◽  
Vol 67 (5) ◽  
pp. 663-671
Author(s):  
Małgorzata Kowalska ◽  
Szymon Szemik

2008 ◽  
Vol 2 (4) ◽  
pp. 186
Author(s):  
Achmad Zaki

Penelitian ini bertujuan mengetahui hubungan lama aktivitas fisik berat dengan Gejala Back pain pada penduduk usia kerja 18 – 55 tahun di wilayah Pulau Jawa dan Bali. Penelitian ini menggunakan data sekunder Survei Kesehatan Nasional Tahun 2001. Penelitian ini menggunakan desain potong-lintang dengan metode analisis regresi logistik ganda. Hasil penelitian mendapatkan ada hubungan antara aktivitas fisik berat dengan gejala back pain, setelah dikontrol oleh variabel-variabel confounding seperti lama aktivitas fisik duduk atau sedikit berjalan (terkait pekerjaan ataupun tidak), jenis kelamin, dan pendidikan. Responden dengan lama aktivitas fisik berat (bekerja 1-5 jam) memiliki risiko 2,03 kali untuk mengalami gejala back pain dibandingkan kelompok yang tidak melakukan aktifitas fisik berat (95% CI 1,34-3,08). Responden dengan lama aktivitas fisik berat (bekerja >5 jam) memiliki risiko 1,60 kali untuk mengalami gejala back pain dibandingkan kelompok yang tidak melakukan aktifitas fisik berat (95% CI 0,55 - 4,63). Disarankan untuk pemberlakuan regulasi waktu kerja menggunakan metode waktu rehat pendek (short rest break), dimana pekerja yang harus bekerja selama 5-6 jam terus menerus perlu diistirahatkan di pertengahan waktu tersebut selama sekitar 20 menit.Kata kunci: Aktivitas fisik, back painAbstractThe objective of this research is to investigate the relationship between high occupational physical activity with back pain symptoms among working age population (18—55 years olds) in Java and Bali islands. This research used secondary data from National Health Survey 2001. This research was using the crosssectional design and was analyzed by multiple logistic regression. The study result shows that there are a relationship between high occupational physical activity with back pain symptoms after controlled with confounding variables such as: duration of occupational sitting and short walk activity, duration of nonoccupational sitting and short walk, gender and educational status. Respondents with duration of heavy occupational activity of 1-5 hours have 2,03 higher risk to get back pain symptoms compared to those not doing it (95% CI 1,34-3,08). Respondents with duration of heavy occupational activity of >5 hours have 1,60 risk to get back pain symptoms compared to those not doing it (95% CI 0,55 - 4,63).Keywords : Physical activity, back pain


2011 ◽  
Vol 26 (S2) ◽  
pp. 333-333
Author(s):  
M.L. Perereira ◽  
D.L. Nunes Peçanha ◽  
I.A. Santos Bordin

IntroductionPsychiatric disorders occur in a complex context of human relations in its social and psychological aspects. Family functioning is closely related to physical and psychological well-being of family members and its impairment affects the family as a whole.ObjectivesTo evaluate family functioning in two groups of adolescents (13–18 years): cases (with major depressive disorder) and controls (with no DSM-IV psychiatric disorders based on the Brazilian version of the Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime/K-SADS-PL).MethodFamilies of cases (N = 9) and controls (N = 9) were matched by adolescent's age, gender and education, number and age of siblings, parental marital status and occupational activity, and family income. An experienced systemic family therapist applied the Structured Family Interview to each family. Nine dimensions of family functioning were evaluated: communication, rules, roles, leadership, conflict, aggressiveness, affect, individuation and integration. Session transcripts were independently evaluated by two other systemic family therapists blind to the family case-control category.ResultsRaters scored all interview items using a standardized coding system (overall agreement = 83.5%). Cases exhibited lower mean scores in seven family dimensions, specially affect (p = 0.0078). Differences were not found regarding rules and leadership.ConclusionDifficulty in expressing affect in parent-child relationships was the main characteristic of families with a depressive adolescent. Improvement of family functioning can contribute to minimize the negative influence of psychosocial and family factors on the reoccurrence, and severity of depressive episodes among depressed adolescents.


Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Annie Green Howard ◽  
Penny Gordon-Larsen ◽  
Amy Herring ◽  
Shufa Du ◽  
Barry Popkin

Background: Urbanization is associated with a decline in physical activity and an increase in CVD, particularly hypertension in lower and middle income countries. We investigate the impact of modernization-related declines in physical activity and pathways through body mass to hypertension in Chinese adults. Methods: Data come from the China Health and Nutrition Survey (CHNS), a household-based study that covers 9 diverse Chinese provinces from 1991 to 2009 across eight waves of data (n=12,018 adults; aged 18-66). We used detailed activity recall across multiple domains (leisure, work, and home), 3 repeated 24-hour-dietary-recalls, measured anthropometry and blood pressure at each exam. We created a multi-level structural equation model in Mplus to estimate direct pathways from specific domains of physical activity to hypertension and indirect paths through BMI. All pathways, including pathways to physical activity domains, were adjusted for gender, age, socioeconomic factors, urbanicity and region. Hypertension-related dietary factors were included in all pathways to BMI and hypertension. Results: The impact of physical activity on hypertension was most notable in the direct pathway to hypertension. Occupational and leisure activity were significantly associated with hypertension (p-value < 0.001), and individuals who were more active were less likely to have hypertension. Estimated from this model, a typical active, highly-educated, high-income middle aged female has a 12% probability of having hypertension, compared to a 43% probability for a similar non-active woman. There was however no direct association between physical activity and BMI. Conclusions: In China, declining physical activity over 18 years of modernization is strongly and directly related to increasing hypertension prevalence, with little evidence for effects along the pathway through BMI. Given continued declines in leisure and occupational activity, it is unlikely that hypertension will decline without additional intervention.


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