1.Lip trill effects on vocal function, vocal pitch, and harmonics-to-noise ratio: A multiple baseline study of three vocally healthy females
Ma. Royce Chua-Lawas ; Esmerita R. Rotor
Acta Medica Philippina 2023;57(5):28-43
Background:
The lip trill is a semi-occluded vocal tract exercise found to have positive outcomes on vocal parameters of healthy individuals after a single session. However, the effect of several lip trill sessions has not been studied.
Objective:
This study investigated the effect of a 3- to 4-week lip trill exercise program on Maximum Phonation
Time (MPT), Maximum Phonation Frequency Range (MPFR), Harmonics-to-Noise Ratio (HNR), and mean Speaking Fundamental Frequency (mean SFF).
Methods:
Three vocally untrained healthy females with perceptually normal voices participated in a multiple-baseline, single-case experimental research. Five to seven direct training sessions were randomly assigned. Self-implementation was encouraged thereafter. Participants were assessed on all outcome measures for 15 sessions. Data were visualized and inspected. Cohen’s d was also derived using Standardized Mean Difference for single-subject research.
Results:
Visual and statistical analyses revealed a decreased MPT when training was introduced, increased MPFR variability during the training phase, and increased stability in mean SFF post-training. Perceived effects include vocal freedom, decreased laryngeal stress, and vocal conditioning. Vocal outcomes in one participant yielded a significant effect on MPFR and mean SFF and a small effect on HNR.
Conclusion
There is evidence of lip trill effect on pitch control and vocal conditioning. Findings also revealed that motivation, exercise frequency, and adherence could contribute to positive gains in vocally healthy speakers. Further investigation in consideration of the study findings and limitations is warranted.
prevention
2.Primary Prevention of Ttype 2 Diabetes.
Journal of the Korean Academy of Family Medicine 2007;28(1):1-8
No abstract available.
Primary Prevention*
4.How Much to Lower Serum LDL-Cholesterol for the Primary and Secondary Prevention of Coronary Heart Disease?.
Korean Circulation Journal 2000;30(3):251-259
No abstract available.
Coronary Disease*
;
Secondary Prevention*
5.Field experiment on efficiency of "Olyset" net in control and prevention of malaria vector at Song Be province
Journal of Preventive Medicine 2001;11(2):71-77
Clothers with hats and mosquito nets made from Olyset tried on 50 people who were working out-door at nights and 50 people who were sleeping with mosquito nets indoor at nights. 100 control people divided into 2 groups. Results showed that mosquito density indoor decreased significantly, clinical malaria and malarial parasite reduced from the 2nd month to the 4th month. There was no case of clinical malaria and malaria parasite on the 5th month. There was no major change in the control groups before and after experiment. After 7 to 10 months of experiment, no major changes of falling mosquito (80%) when contacted with Olyset net within three minutes
Malaria
;
artesunate
;
prevention & control
6.Evaluation of the malaria control activity in Vietnam in 2000
Journal of Medical and Pharmaceutical Information 2001;(11):14-16
An evaluation of the malaria control activity in 2000 has shown that the malaria control activity has obtained some achievements including no big outbreak, reduction of morbidity number and mortality number to 50% and 60%, respectively when comparing with these in 1995. This paper presented some shortcoming such as the high morbidity and mortality, malaria in the central highland, limited diagnosis, treatment, education and communication in the local level, especially in remote areas as well as unstable equipment and material
Malaria
;
artesunate
;
prevention & control
7.Some realizations of the 10-year socialization of malaria control in VietNam
Journal of Medical and Pharmaceutical Information 2001;(11):7-10
In past ten years, the socialized activity has contributed an important part in improving the malaria situation of VietNam, with remarkable achievements are: after 10 years (1991-2000), the malaria mortality reduced by 96.8%, malaria incidence reduced by 73%. Malaria outbreaks reduced by 98.6% and many locals have created sustainable factors to maintain the result of malaria control
Malaria
;
artesunate
;
prevention & control
8.Malaria control activities in Vietnam within 30 years of implementation of Hochiminh’s will
Journal of Medical and Pharmaceutical Information 1998;(1):2-5
From 1991, the Vietnam has been implementing the National malaria control program aiming at the reduction of outbreak, morbidity and mortality. This program has obtained some primary achievements including interruption of malaria outbreak, reduction of malaria epidemy, and morbidity and mortality
Malaria
;
artesunate
;
prevention & control
9.Real situation of malaria, An.minimus in circulating malaria points reduce by applying diffirent vector prevention in Cho Don, Bac Kan
Journal of Malaria and parasite diseases Control 2003;0(4):51-57
Data research from 1997-2004, restrospective and cross-sectional studies were conducted every 6 months from 4/2002-4/2004 to collect data on malaria patients and the rate of malaria parasite and follow up the sectoral development of Anopheles and An. minimus at areas where interruption of vector prevention at different times: 1, 2 or 3 years showed that indicators like malaria patients, malaria patients/1000 residents and the density of malaria parasite were decreasing and stable. An.minimus recovers and increase with time. The density at 2-3 years after spraying was higher than the density at the point of spraying. An.minimus presented at all sites of the study but the density in striking people was low. If the supervision, management and treatment of malaria patients are well, the malaria situation could be kept stable even vector control methods were not used often
Malaria
;
Prevention & control
10.Program of the cancer prevention and control in Hanoi
Journal of Vietnamese Medicine 1998;230(11):29-32
This paper introduced the frequent cancers in Vietnam, the situation of the cancer prevention and control in Hanoi, especially the activities of the department of tumor of Hai Ba Trung hospital during past 10 years (1988-1999), concurrently establish the orientation, objectives of cancer prevention and control program in Hanoi from now to 2000.
neoplasms
;
prevention & control