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Cardiovascular responses to short-term head-down positioning in healthy young and older adults.
Naylor JM, Chow CM, McLean AS, Heard RC, Avolio A. Naylor JM, et al. Among authors: avolio a. Physiother Res Int. 2005;10(1):32-47. doi: 10.1002/pri.22. Physiother Res Int. 2005. PMID: 15991485
Consequently, it is considered a relative contraindication in the presence of severe cardiovascular disease. Evidence demonstrating that the head-down manoeuvre as used by physiotherapists does significantly load the cardiovascular system is lacking. ...The results are …
Consequently, it is considered a relative contraindication in the presence of severe cardiovascular disease. Evidence demonstrating t …
Estimation of pressure pulse amplification between aorta and brachial artery using stepwise multiple regression models.
Camacho F, Avolio A, Lovell NH. Camacho F, et al. Among authors: avolio a. Physiol Meas. 2004 Aug;25(4):879-89. doi: 10.1088/0967-3334/25/4/008. Physiol Meas. 2004. PMID: 15382828
Method 1: PPA was determined from a multi-parameter linear regression of subject parameters (gender, age, height, weight, heart rate (HR), brachial systolic pressure (BSP), diastolic pressure (BDP), mean pressure (MP)). ...The sample population (1421 male, 992 female) was …
Method 1: PPA was determined from a multi-parameter linear regression of subject parameters (gender, age, height, weight, heart rate …
Central blood pressure in children and adolescents: non-invasive development and testing of novel transfer functions.
Cai TY, Qasem A, Ayer JG, Butlin M, O'Meagher S, Melki C, Marks GB, Avolio A, Celermajer DS, Skilton MR. Cai TY, et al. Among authors: avolio a. J Hum Hypertens. 2017 Dec;31(12):831-837. doi: 10.1038/jhh.2017.59. Epub 2017 Aug 24. J Hum Hypertens. 2017. PMID: 29115295
We sought to create and test age-specific non-invasively developed TFs in children, with comparison to a pre-existing adult TF. ...
We sought to create and test age-specific non-invasively developed TFs in children, with comparison to a pre-existing adult TF. ...
A modified postural drainage position produces less cardiovascular stress than a head-down position in patients with severe heart disease: a quasi-experimental study.
Naylor JM, McLean A, Chow CM, Heard R, Ting I, Avolio A. Naylor JM, et al. Among authors: avolio a. Aust J Physiother. 2006;52(3):201-9. doi: 10.1016/s0004-9514(06)70029-0. Aust J Physiother. 2006. PMID: 16942455 Clinical Trial.
QUESTION: Does a modified postural drainage position (horizontal) produce less cardiovascular and respiratory stress than a head-down postural drainage position (30 degrees) in people with severe heart disease? ...INTERVENTION: Two manoeuvres were performed--one fro …
QUESTION: Does a modified postural drainage position (horizontal) produce less cardiovascular and respiratory stress than a he …
The rhythm of running: can the heart join in?
O'Rourke M, Avolio A, Stelliou V, Young J, Gallagher DE. O'Rourke M, et al. Among authors: avolio a. Aust N Z J Med. 1993 Dec;23(6):708-10. doi: 10.1111/j.1445-5994.1993.tb04732.x. Aust N Z J Med. 1993. PMID: 8141702 No abstract available.
Ageing and wave reflection.
Avolio A. Avolio A. J Hypertens Suppl. 1992 Aug;10(6):S83-6. J Hypertens Suppl. 1992. PMID: 1432335
Therefore, age-related changes that are observed in the central pressure pulse are different from those observed in the pulse when measured in a limb. ...CONCLUSIONS: These findings have profound implications for therapeutic strategies aimed at altering systolic pressure a …
Therefore, age-related changes that are observed in the central pressure pulse are different from those observed in the pulse when measured …
An analysis of the relationship between central aortic and peripheral upper limb pressure waves in man.
Karamanoglu M, O'Rourke MF, Avolio AP, Kelly RP. Karamanoglu M, et al. Among authors: avolio ap. Eur Heart J. 1993 Feb;14(2):160-7. doi: 10.1093/eurheartj/14.2.160. Eur Heart J. 1993. PMID: 8449191 Review.
Control and nitroglycerine results were also pooled to obtain a single RATF. BATF and RATF moduli peaked at 5 Hz and 4 Hz, reaching 2.5 and 2.8 times the value at zero frequency respectively. ...Results indicate that in adult humans a single generalized TF can be us …
Control and nitroglycerine results were also pooled to obtain a single RATF. BATF and RATF moduli peaked at 5 Hz and 4 Hz, reaching 2 …
Echocardiographic and electrocardiographic study of the normal kangaroo heart.
Sugishita Y, Iida K, O'Rourke MF, Kelly R, Avolio A, Butcher D, Reddacliff G. Sugishita Y, et al. Among authors: avolio a. Aust N Z J Med. 1990 Apr;20(2):160-5. doi: 10.1111/j.1445-5994.1990.tb01294.x. Aust N Z J Med. 1990. PMID: 2344320
As in human hypertrophic cardiomyopathy, kangaroos showed relative left ventricular hypertrophy measured as a ratio of (internal left ventricular end-diastolic diameter)/(septal + posterior wall thickness): 1.7 (SD 0.2) in kangaroos and 1.3 (SD 0.4) in hypertrophic cardiom …
As in human hypertrophic cardiomyopathy, kangaroos showed relative left ventricular hypertrophy measured as a ratio of (internal left …
Quantification of alterations in structure and function of elastin in the arterial media.
Avolio A, Jones D, Tafazzoli-Shadpour M. Avolio A, et al. Hypertension. 1998 Jul;32(1):170-5. doi: 10.1161/01.hyp.32.1.170. Hypertension. 1998. PMID: 9674656
A directional fractal curve was generated for each image, and image texture was characterized by directional fractal curve parameters. ...Wall stress distribution was determined from a finite element model of the arterial wall with multiple layers simulating elastin
A directional fractal curve was generated for each image, and image texture was characterized by directional fractal curve parameters
Arterial dilation and reduced wave reflection. Benefit of dilevalol in hypertension.
Kelly R, Daley J, Avolio A, O'Rourke M. Kelly R, et al. Among authors: avolio a. Hypertension. 1989 Jul;14(1):14-21. doi: 10.1161/01.hyp.14.1.14. Hypertension. 1989. PMID: 2737733 Clinical Trial.
Twelve patients of mean age 58 years (range 44-73 years) with essential hypertension (supine diastolic blood pressure 95-114 mm Hg) took active therapy for 12 weeks, separated by a 2-4 week placebo period. Carotid pressure waveforms were recorded noninvasively by applanati …
Twelve patients of mean age 58 years (range 44-73 years) with essential hypertension (supine diastolic blood pressure 95-114 mm Hg) took act …
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