Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Arterial properties of the carotid and femoral artery in endurance-trainedand paraplegic subjects
Autore:
Schmidt-Trucksass, A; Schmid, A; Brunner, C; Scherer, N; Zach, G; Keul, J; Huonker, M;
Indirizzi:
Freiburg Univ Hosp, Ctr Internal Med, Dept Prevent Rehabil & Sports Med, D-79106 Freiburg, Germany Freiburg Univ Hosp Freiburg Germany D-79106 d, D-79106 Freiburg, Germany Swiss Parapleg Ctr, Sports Med Dept, CH-6207 Nottwil, Switzerland Swiss Parapleg Ctr Nottwil Switzerland CH-6207 6207 Nottwil, Switzerland
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 5, volume: 89, anno: 2000,
pagine: 1956 - 1963
SICI:
8750-7587(200011)89:5<1956:APOTCA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
WALL SHEAR-STRESS; BLOOD-FLOW; MECHANICAL-PROPERTIES; PHYSICAL EXERCISE; AGE; SYMPATHECTOMY; THICKNESS; DIAMETER; AORTA; RATS;
Keywords:
arterial diameter; compliance; shear rate; physical activity; ultrasound;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Schmidt-Trucksass, A Freiburg Univ Hosp, Ctr Internal Med, Dept Prevent Rehabil & Sports Med, Hugstetter Str 55, D-79106 Freiburg, Germany Freiburg Univ Hosp Hugstetter Str 55 Freiburg Germany D-79106
Citazione:
A. Schmidt-Trucksass et al., "Arterial properties of the carotid and femoral artery in endurance-trainedand paraplegic subjects", J APP PHYSL, 89(5), 2000, pp. 1956-1963

Abstract

In humans, the relationships of blood flow changes to structure, function,and shear rate of conducting arteries have not been thoroughly examined. Therefore, the purpose of this study was to investigate these parameters of the elastic-type, common carotid artery (CCA) and the muscular-type, commonfemoral artery (CFA) in long-term highly active and extremely inactive individuals, assuming that the impact of activity-induced blood flow changes on conduit arteries, if any, should be seen in these subjects. We examined 21 highly endurance-trained athletes (A), 10 paraplegic subjects (P), and 20sedentary subjects (S) by means of noninvasive ultrasound. As a result, the CFA diameter and compliance were highest in A (9.7 +/- 0.81 mm; 1.84 +/- 0.54 mm(2)/kPa) and lowest in P (5.9 +/- 0.7 mm; 0.54 +/- 0.27 mm(2)/kPa) compared with S (8.3 +/- 1.0 mm; 0.92 +/- 0.48 mm(2)/kPa) with P < 0.01 among the groups. Both parameters correlated with each other (r = 0.62; P < 0.01). Compared with A (378 +/- 84 s(-1); 37 +/- 15 s(-1)) and S (356 +/- 113 s(-1): 36 +/- 20 s(-1)), the peak and mean shear rates of the CFA were almost or more than doubled in P (588 +/- 120 s(-1); 89 +/- 26 s(-1)). In the CCA, only the compliance and peak shear rate showed significant differences among the groups (A: 1.28 +/- 0.47 mm(2)/kPa, 660 +/- 138 s(-1): S: 1.04 +/- 0.27 mm(2)/kPa, 588 +/- 109 s(-1); P: 0.65 +/- 0.22 mm(2)/kPa, 490 +/- 149 s(-1): P < 0.05). In conclusion, the results suggest a structural and functional adaptation in the CFA and a predominantly functional adaptation of the arterial wall properties to differences ill the physical activity leveland associated exercise-induced blood flow changes in the CCA. The resultsfor humans confirm those from animal experiments. Similar shear rate values of S and P in the CFA support the hypothesis of constant shear stress regulation due to local blood flow changes in humans. On the other hand, the increased shear rate in the CFA in P indicates an at least partially nonphysiological response of the arterial wall in long-term chronic sympathectomy due to a change in local blood flow.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/01/21 alle ore 16:27:02