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Yousra H. AL JAZAIRY Hassan Suliman HALAWANY Nawaf AL HUSSAINAN Nassr AL MAFLEHI Nimmi Biju ABRAHAM Vimal JACOB 《Industrial health》2014,52(4):324-333
A disparity exists in the educational qualifications of dental assistants working in
various public and private institutions in Riyadh, Saudi Arabia. The aim of this study was
to assess the influence of professional and personal characteristics on job satisfaction
among dental assistants. A cross-sectional survey was performed among dental assistants
using a 24-item self-administered questionnaire. Multinomial logistic regression was used
to assess the relationship between overall job satisfaction and other variables. The
overall response rate was 72.1%. Factor analysis suggested that five underlying factors
were related to job satisfaction. The mean score for overall job satisfaction was 3.86
(satisfied) out of 5. Among the work environment factors, the highest mean score, 4.26
(satisfied), was obtained for quality of service, and the lowest mean score, 2.78
(neutral), was obtained for the perception of income. The income and general prospects of
the profession was significantly associated with overall job satisfaction. This study
suggests that for dental assistants, professional and personal life, quality of service,
perception of income and prestige and self-respect are important factors for job
satisfaction. Despite differences in professional formation standards, in general, the
study participants were considerably satisfied with their jobs. 相似文献
134.
135.
Iman Amy Betawi Sinaria Kamil Abdel Jabbar Mohammad. A. AL Jabery Haidar Ibrahim Zaza Muhannad Al-Shboul 《Early child development and care》2014,184(12):1992-2003
This study examined fathers' perceptions regarding their home-based activities (HBA) and the influence of fathers' demographic characteristics on their perceptions and practices at home. A total of 396 fathers completed a survey questionnaire describing their demographic information, perceptions and their practices regarding their involvement in HBA. Results indicated that fathers have moderate level of practice concerning their HBA, yet they have low perception of their actual practice at HBA. In addition, there was a statistical significance in HBA due to fathers' age, educational level and specialisation which had an influence on their perceptions as well. Recommendations and implications of future research were discussed. 相似文献
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137.
Vítor de Salles Painelli Victor Tavares Alves Carlos Ugrinowitsch Fabiana Braga Benatti Guilherme Giannini Artioli Antonio Herbert Lancha Jr Bruno Gualano Hamilton Roschel 《European journal of applied physiology》2014,114(8):1749-1755
Purpose
To investigate the effect of creatine (CR) supplementation on the acute interference induced by aerobic exercise on subsequent maximum dynamic strength (1RM) and strength endurance (SE, total number of repetitions) performance.Methods
Thirty-two recreationally strength-trained men were submitted to a graded exercise test to determine maximal oxygen consumption (VO2max: 41.56 ± 5.24 ml kg?1 min?1), anaerobic threshold velocity (ATv: 8.3 ± 1.18 km h?1), and baseline performance (control) on the 1RM and SE (4 × 80 % 1RM to failure) tests. After the control tests, participants were randomly assigned to either a CR (20 g day?1 for 7 days followed by 5 g day?1 throughout the study) or a placebo (PL-dextrose) group, and then completed 4 experimental sessions, consisting of a 5-km run on a treadmill either continuously (90 % ATv) or intermittently (1:1 min at vVO2max) followed by either a leg- or bench-press SE/1RM test.Results
CR was able to maintain the leg-press SE performance after the intermittent aerobic exercise when compared with C (p > 0.05). On the other hand, the PL group showed a significant decrease in leg-press SE (p ≤ 0.05). CR supplementation significantly increased bench-press SE after both aerobic exercise modes, while the bench-press SE was not affected by either mode of aerobic exercise in the PL group. Although small increases in 1RM were observed after either continuous (bench press and leg press) or intermittent (bench press) aerobic exercise in the CR group, they were within the range of variability of the measurement. The PL group only maintained their 1RM.Conclusions
In conclusion, the acute interference effect on strength performance observed in concurrent exercise may be counteracted by CR supplementation. 相似文献138.
Danielle Carpenter Carmen Taype Jon Goulding Mike Levin Brian Eley Suzanne Anderson Marie-Anne Shaw John AL Armour 《BMC medical genetics》2014,15(1):1-8
Background
22q11.2 deletion syndrome (22q11.2DS) is a common microdeletion syndrome, which occurs in approximately 1:4000 births. Familial autosomal dominant recurrence of the syndrome is detected in about 8-28% of the cases. Aim of this study is to evaluate the intergenerational and intrafamilial phenotypic variability in a cohort of familial cases carrying a 22q11.2 deletion.Methods
Thirty-two 22q11.2DS subjects among 26 families were enrolled.Results
Second generation subjects showed a significantly higher number of features than their transmitting parents (212 vs 129, P?=?0.0015). Congenital heart defect, calcium-phosphorus metabolism abnormalities, developmental and speech delay were more represented in the second generation (P?<?0.05). Ocular disorders were more frequent in the parent group. No significant difference was observed for the other clinical variables. Intrafamilial phenotypic heterogeneity was identified in the pedigrees. In 23/32 families, a higher number of features were found in individuals from the second generation and a more severe phenotype was observed in almost all of them, indicating the worsening of the phenotype over generations. Both genetic and epigenetic mechanisms may be involved in the phenotypic variability.Conclusions
Second generation subjects showed a more complex phenotype in comparison to those from the first generation. Both ascertainment bias related to patient selection or to the low rate of reproductive fitness of adults with a more severe phenotype, and several not well defined molecular mechanism, could explain intergenerational and intrafamilial phenotypic variability in this syndrome. 相似文献139.
Daniel Fernando Pereira Vasconcelos Marcelo Rocha Marques Bruno Braga Benatti Silvana Pereira Barros Francisco Humberto Nociti Júnior Pedro Duarte Novaes 《Journal of periodontology》2014,85(5):721-728
Background: Intermittent administration of parathyroid hormone (PTH) promotes new bone formation in patients with osteoporosis and bone fractures. It was shown previously that PTH also reduces periodontitis‐related bone loss. The aim of this study is to evaluate the effect of treatment with PTH on periodontal healing in rats. Methods: Fenestration defects were created at the buccal surface of the distal root of the mandibular first molars, and both periodontal ligament (PDL) and cementum were removed. Animals were then assigned to two groups (eight animals per group): group 1: control, placebo administration; and group 2: test, human PTH (hPTH) 1‐34 administration at a concentration of 40 μg/kg. For both groups, the animals were injected every 2 days, and the animals were sacrificed at 14 and 21 days after surgery. Specimens were harvested and processed for routine decalcified histologic sections. The following parameters were assessed: 1) remaining bone defect extension (RBDE); 2) newly formed bone density (NFBD); 3) total callus area (TCA); 4) osteoclast number (ON) in the callus region; and 5) newly formed dental cementum‐like tissue (NFC). Birefringence of root PDL reattachment was also evaluated. Results: Birefringence analysis showed root PDL reattachment for both groups 21 days after treatment. Intermittent hPTH 1‐34 administration decreased RBDE (P <0.01) and increased NFBD (P <0.01), TCA (P <0.01), area of NFC (P <0.01), and ON in the callus region (P <0.01). Conclusion: Within the limits of the present study, intermittent administration of hPTH 1‐34 led to an enhanced periodontal healing process compared with non‐treated animals. 相似文献
140.
Fernanda C. Calheiros Márcia Daronch Frederick A. Rueggeberg Roberto R. Braga 《Dental materials》2014