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Jayson R Gifford

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Recent Articles
11.
Marchant E, Kaluhiokalani J, Wallace T, Ahmadi M, Dorff A, Linde J, et al.
Int J Mol Sci . 2022 Aug; 23(15). PMID: 35955635
AIM: Mild heat stress can improve mitochondrial respiratory capacity in skeletal muscle. However, long-term heat interventions are scarce, and the effects of heat therapy need to be understood in the...
12.
Groot H, Broxterman R, Gifford J, Garten R, Rossman M, Jarrett C, et al.
Exp Physiol . 2022 Mar; 107(5):541-552. PMID: 35294784
New Findings: What is the central question of this study? Use of the passive leg movement (PLM) test, a non-invasive assessment of microvascular function, is on the rise. However, PLM...
13.
Weavil J, Thurston T, Hureau T, Gifford J, Aminizadeh S, Wan H, et al.
J Appl Physiol (1985) . 2022 Jan; 132(3):689-698. PMID: 35085030
This study examined the impact of aging on the elastic and resistive components of the work of breathing () during locomotor exercise at a given ) ventilatory rate, ) metabolic...
14.
Thurston T, Weavil J, Hureau T, Gifford J, Georgescu V, Wan H, et al.
J Appl Physiol (1985) . 2021 Oct; 131(6):1691-1700. PMID: 34672767
This study investigated the impact of dietary nitrate supplementation on peripheral hemodynamics, the development of neuromuscular fatigue, and time to task failure during cycling exercise. Eleven recreationally active male participants...
15.
Lewis M, Blain G, Hart C, Layec G, Rossman M, Park S, et al.
Am J Physiol Regul Integr Comp Physiol . 2021 Sep; 321(5):R687-R698. PMID: 34549627
Recently it was documented that fatiguing, high-intensity exercise resulted in a significant attenuation in maximal skeletal muscle mitochondrial respiratory capacity, potentially due to the intramuscular metabolic perturbation elicited by such...
16.
Hyldahl R, Hafen P, Nelson W, Ahmadi M, Pfeifer B, Mehling J, et al.
J Physiol . 2021 Sep; 599(20):4581-4596. PMID: 34487346
Limb disuse has profound negative consequences on both vascular and skeletal muscle health. The purpose of this investigation was to determine whether repeated application of passive heat, applied to the...
17.
Marchant E, Marchant N, Hyldahl R, Gifford J, Smith M, Hancock C
Med Sci Sports Exerc . 2021 Jun; 53(11):2363-2373. PMID: 34107508
Purpose: Very little research has investigated the effects of ultraendurance exercise on the bioenergetic status of muscle. The primary objective of this case study was to characterize the changes that...
18.
Gifford J, Collins J
Med Sci Sports Exerc . 2021 Feb; 53(3):524-533. PMID: 33560767
Purpose: This study aimed to determine how the speed-distance relationship, described by critical speed (CS) and distance prime (D'), is altered with aging. Methods: Official race data from the past...
19.
Hydren J, Gifford J, Jarrett C, Park S, Shields K, Broxterman R, et al.
Am J Physiol Regul Integr Comp Physiol . 2021 Jan; 320(4):R425-R437. PMID: 33438517
Vascular function is further attenuated in patients with chronic heart failure implanted with a continuous-flow left ventricular assist device (LVAD), likely due to decreased arterial pulsatility, and this may contribute...
20.
Trinity J, Kwon O, Broxterman R, Gifford J, Kithas A, Hydren J, et al.
Am J Physiol Heart Circ Physiol . 2020 Dec; 320(2):H668-H678. PMID: 33306447
Passive leg movement (PLM) evokes a robust and predominantly nitric oxide (NO)-mediated increase in blood flow that declines with age and disease. Consequently, PLM is becoming increasingly accepted as a...