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1.
PLoS One ; 18(6): e0287685, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37352303

RESUMO

BACKGROUND AND AIMS: There is a demand for longitudinal studies that use both objective and subjective measures of physical activity to investigate the association of physical activity with the change in carotid intima-media thickness (CIMT). In order to investigate such association, we conducted an 8-year follow-up study that used both objective and subjective measures of physical activity. METHODS: This cohort study used subsamples of the ongoing Korean Genome and Epidemiology Study (KoGES). Included participants were between 49 to 79 years of age at baseline. Exclusion criteria included incomplete assessments of pedometer/accelerometer, international physical activity questionnaire (IPAQ), and baseline CIMT. Participants with a history of cardiovascular diseases were further excluded. Linear regression models were used for the main analysis. Age differences were assessed by stratifying the participants into < 60 years and ≥ 60 years. RESULTS: After removing excluded participants, 835 participants were included in the final analysis (age, 59.84 ± 6.53 years; 326 (39.04%) males). 453 participants were < 60 years and 382 participants were ≥ 60 years. The daily total step count was inversely associated with the percent change in overall CIMT over 8-years (ß = -0.015, standard error = 0.007, P = 0.034). This association was present among participants in the < 60-year-old group (ß = -0.026, standard error = 0.010, P = 0.006), but not among participants in the ≥ 60-year-old group (ß = -0.010, standard error = 0.011, P = 0.38). CONCLUSIONS: The findings suggest that taking preemptive actions of increasing physical activity may prevent the incidence of atherosclerosis.


Assuntos
Espessura Intima-Media Carotídea , Exercício Físico , Masculino , Humanos , Pessoa de Meia-Idade , Idoso , Feminino , Estudos de Coortes , Seguimentos , Estudos Prospectivos , Fatores de Risco
2.
J Appl Physiol (1985) ; 133(3): 546-560, 2022 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-35771219

RESUMO

Few noninvasive therapies currently exist to improve functional capacity in people with lower extremity peripheral artery disease (PAD). The goal of the present study was to test the hypothesis that unsupervised, home-based leg heat therapy (HT) using water-circulating trousers perfused with warm water would improve walking performance in patients with PAD. Patients with symptomatic PAD were randomized into either leg HT (n = 18) or a sham treatment (n = 16). Patients were provided with water-circulating trousers and a portable pump and were asked to apply the therapy daily (7 days/wk, 90 min/session) for 8 wk. The primary study outcome was the change from baseline in 6-min walk distance at 8-wk follow-up. Secondary outcomes included the claudication onset-time, peak walking time, peak pulmonary oxygen consumption and peak blood pressure during a graded treadmill test, resting blood pressure, the ankle-brachial index, postocclusive reactive hyperemia in the calf, cutaneous microvascular reactivity, and perceived quality of life. Of the 34 participants randomized, 29 completed the 8-wk follow-up. The change in 6-min walk distance at the 8-wk follow-up was significantly higher (P = 0.029) in the group exposed to HT than in the sham-treated group (Sham: median: -0.9; 25%, 75% percentiles: -5.8, 14.3; HT: median: 21.3; 25%, 75% percentiles: 10.1, 42.4, P = 0.029). There were no significant differences in secondary outcomes between the HT and sham group at 8-wk follow-up. The results of this pilot study indicate that unsupervised, home-based leg HT is safe, well-tolerated, and elicits a clinically meaningful improvement in walking tolerance in patients with symptomatic PAD.NEW & NOTEWORTHY This is the first sham-controlled trial to examine the effects of home-based leg heat therapy (HT) on walking performance in patients with peripheral artery disease (PAD). We demonstrate that unsupervised HT using water-circulating trousers is safe, well-tolerated, and elicits meaningful changes in walking ability in patients with symptomatic PAD. This home-based treatment option is practical, painless, and may be a feasible adjunctive therapy to counteract the decline in lower extremity physical function in patients with PAD.


Assuntos
Doença Arterial Periférica , Qualidade de Vida , Temperatura Alta , Humanos , Claudicação Intermitente/terapia , Perna (Membro) , Extremidade Inferior , Doença Arterial Periférica/terapia , Projetos Piloto , Caminhada/fisiologia , Água
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