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Physiology International

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https://www.readbyqxmd.com/read/30022680/physiological-adaptations-to-specific-endurance-training-in-professional-female-handball-players
#1
S G Gabnai, L Kósa, E Tóth, N Schulteisz, J Gangl, M Othman, F Ihász
Several Hungarian and foreign researchers have already studied the cardiorespiratory parameters of elite handball players. There are only a few studies though, which would separately review the changes in the functions of different organ systems. The aim of this study is to investigate the effect of an intervention (physical activity) on the cardiorespiratory system. In this study, 16 elite female handball players participated, whose body compositions were measured and took two vita maxima tests. During the analysis, each cardiorespiratory parameter was monitored for every 20 s...
July 19, 2018: Physiology International
https://www.readbyqxmd.com/read/29975128/arterial-stiffness-may-predict-renal-and-cardiovascular-prognosis-in-autosomal-dominant-polycystic-kidney-disease
#2
B Sági, I Késői, B Késői, T Vas, B Csiky, T Kovács, J Nagy
Background and aims Autosomal-dominant polycystic kidney disease (ADPKD) is one of the most common causes of end-stage renal disease (ESRD). The most important cause of death among ADPKD patients is cardiovascular (CV). The aim of this study was to examine the prognostic significance of arterial stiffness on CV and renal outcomes in ADPKD. Methods A total of 55 patients with ADPKD were examined. Pulse wave velocity was determined and stiffness index (SIDVP ) was calculated. Combined primary endpoints (CV and renal) were major CV events (myocardial infarction, stroke, and CV intervention) as CV endpoints, and attaining of ESRD or start of renal replacement therapy as renal endpoints...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975127/sitting-to-standing-postural-changes-energy-expenditure-and-a-possible-mechanism-to-alleviate-sedentary-behavior
#3
M Wang, Y Song, J S Baker, G Fekete, Y Gu
Background and aims Sedentary lifestyles have recently been identified as potential mechanism for obesity and associated metabolic diseases linked to ill health. The aim of this study was to investigate the effects of standing and sitting-standing positional changes on energy cost and consequently interrupting sedentary sitting time while working. Methods A total of 26 healthy male volunteers performed normal typing and editing work for 100 min under three conditions. The conditions included sustained sitting, sustained standing, and sitting-standing alternation every 20 min using a sit-stand desk...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975126/effects-of-submaximal-cycling-at-different-exercise-intensities-on-maximal-isometric-force-output-of-the-non-exercised-elbow-flexor-muscles
#4
R Matsuura, K Hirakoba, K Takahashi
The purpose of this study was to examine the effects of submaximal cycling at different exercise intensities on maximal isometric force output of the non-exercised elbow flexor muscles after the cycling. A total of 8 healthy young men performed multiple maximal voluntary contractions by the right elbow flexion before, immediately after, 5 min after, and 10 min after a 6-min submaximal cycling at ventilatory threshold (LI), 70% [Formula: see text] (MI), and 80% [Formula: see text] (HI) with both arms relaxed in the air...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975125/effect-of-one-bout-of-local-vibration-exercise-with-blood-flow-restriction-on-neuromuscular-and-hormonal-responses
#5
W-C Chen, C-M Wu, Z-Y Cai
This study aimed to investigate the effects of single local vibration (LV) with and without blood flow restriction (BFR) on muscle activity and hormonal responses. A total of 12 physically inactive males were exposed to 10 sets of intermittent LV (35-40 Hz) on unilateral mid-quadriceps in the supine lying position and LV + BFR (inflated to 140 mmHg) sessions in a repeated-measures randomized crossover design, with a 1-week interval separating the sessions. The results indicated that the electromyography values from the rectus femoris during LV + BFR were greater than those during LV (p < 0...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975124/the-immune-system-cell-populations-were-increased-in-salt-induced-hypertensive-rats-without-an-increase-in-the-serum-testosterone-level-short-communication
#6
F O Awobajo, A E Okafor, H O Adebayo
The consumption of dietary salt has significantly increased globally, especially in the developed countries. High dietary salt intake has been linked to onset and complications in hypertension with a dimorphism tendency. There is scanty information about the influence of high salt diet on the immune cell population and androgen level in circulation. Male Sprague-Dawley rats of 8 weeks old were used for this study. They were divided into control (fed 0.1% salted feed) and salt-loaded groups (fed 8% salted feed) for 8 weeks...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975123/impact-of-loganin-on-pro-inflammatory-cytokines-and-depression-and-anxiety-like-behaviors-in-male-diabetic-rats
#7
M Rajabi, G Mohaddes, F Farajdokht, S Nayebi Rad, M Mesgari, S Babri
Behavioral disturbances are observed in most patients suffering from diabetes. According to some evidence, pro-inflammatory cytokines have a key role both in diabetes and behavioral disorders, such as anxiety and depression. In this study, the effect of chronic administration of loganin, as a bioflavonoid, was investigated on pro-inflammatory cytokines and depression- and anxiety-like behaviors in streptozotocin-induced diabetes in male Wistar rats. Blood levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) were assessed by enzyme-linked immunosorbent assay method...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975122/the-affective-and-behavioral-responses-to-repeated-strength-snacks
#8
S L Buckner, S J Dankel, K T Mattocks, M B Jessee, J G Mouser, J P Loenneke
Background A training program consisting of only one-repetition maximum (1RM) training results in similar strength adaptations as traditional resistance exercise. However, little is known regarding the affective or behavioral responses to this type of training. Aim To examine the affective and behavioral response to either a traditional resistance exercise program or a biweekly 1RM-training program. Methods Participants were trained for 8 weeks (2× per week). The HYPER group completed four sets of 8-12 repetitions; the 1RM group (TEST) worked up to a single maximal repetition...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975121/should-we-really-stop-treating-patients-with-iga-nephropathy-with-steroids
#9
F Locatelli, L Del Vecchio, C Ponticelli
IgA nephropathy (IgAN) is the most common primary glomerulonephritis all over the world. Once considered as a benign disease, today the scientific community is aware that a significant percentage of patients eventually progress to end-stage kidney disease (ESKD). The rate of progression is often very slow. Since 1980s, several therapeutic attempts have been made with steroids. Despite different molecules, doses, and lengths of treatment, the majority of uncontrolled and controlled studies found benefits in terms of proteinuria reduction and reduction of the risk of ESKD...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29975120/effects-of-low-dose-of-aliskiren-on-isoproterenol-induced-acute-myocardial-infarction-in-rats
#10
I Bin-Jaliah, A M Hussein, H F Sakr, E A Eid
This study examined the effects of aliskiren (Ali) (direct renin inhibitor) on serum cardiac enzymes (LDH and CK-MB), electrocardiography (ECG) changes, myocardial oxidative stress markers (MDA, CAT, and GSH) and the expression of Bcl2, HO-1, and Nrf2 genes in isoproterenol (ISO)-induced myocardial infarction (MI). A total of 40 male albino rats were allocated into four groups, (1) normal control (NC) group, (2) Ali group (rats received Ali at 10 mg/kg/day p.o. for 5 days), (3) ISO group (rats received ISO 150 mg/kg i...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29855187/impact-of-loganin-on-pro-inflammatory-cytokines-and-depression-and-anxiety-like-behaviors-in-male-diabetic-rats
#11
M Rajabi, G Mohaddes, F Farajdokht, S Nayebi Rad, M Mesgari, S Babri
Behavioral disturbances are observed in most patients suffering from diabetes. According to some evidence, pro-inflammatory cytokines have a key role both in diabetes and behavioral disorders, such as anxiety and depression. In this study, the effect of chronic administration of loganin, as a bioflavonoid, was investigated on pro-inflammatory cytokines and depression- and anxiety-like behaviors in streptozotocin-induced diabetes in male Wistar rats. Blood levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) were assessed by enzyme-linked immunosorbent assay method...
June 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602295/moderate-hypothermia-and-responses-to-calcium-channel-blockers-role-of-the-nitric-oxide
#12
S Canbolat, K E Nurullahoglu Atalik
Moderate hypothermia (25-31 °C) may have a significant influence on vascular tone. At present, very little is known about the role of endothelial nitric oxide on the hypothermia-induced responses. In this study, we investigated the effect of hypothermia (to 28 °C) on the vasodilatation induced by verapamil, a phenylalkylamine calcium channel blocker (10-9 -3 × 10-4  M) and dihydropyridines, amlodipine (10-9 -3 × 10-4  M), and benidipine (10-9 -10-3  M) on 5-hydroxytryptamine (5-HT or serotonin) precontracted calf cardiac veins...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602294/melatonin-ameliorates-brain-oxidative-stress-and-upregulates-senescence-marker-protein-30-and-osteopontin-in-a-rat-model-of-vascular-dementia
#13
I Bin-Jaliah, H F Sakr
The aim of this study was to investigate the effect of melatonin on oxidative stress and senescence marker protein-30 (SMP30) as well as osteopontin (OPN) expression in the hippocampus of rats subjected to vascular dementia (VD). A total of 72 male rats were divided into six groups (n = 12 each) as follows: (i) untreated control (CON), (ii) sham-operated group, (iii) sham-operated + melatonin, (iv) rats exposed to VD induced by permanent bilateral occlusion of the common carotid arteries (BCCAO) leading to chronic cerebral hypoperfusion, (v) rats exposed to VD + melatonin, and (vi) rats exposed to VD + donepezil (DON)...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602293/swimming-exercise-demonstrates-advantages-over-running-exercise-in-reducing-proteinuria-and-glomerulosclerosis-in-spontaneously-hypertensive-rats
#14
COMPARATIVE STUDY
N L Totou, S S Moura, D B Coelho, E C Oliveira, L K Becker, W G Lima
Experimental studies in animal models have described the benefits of physical exercise (PE) to kidney diseases associated with hypertension. Land- and water-based exercises induce different responses in renal function. Our aim was to evaluate the renal alterations induced by different environments of PE in spontaneously hypertensive rats (SHRs). The SHRs were divided into sedentary (S), swimming exercise (SE), and running exercise (RE) groups, and were trained for 8 weeks under similar intensities (60 min/day)...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602292/heat-shock-proteins-and-cardiovascular-disease
#15
REVIEW
B Rodríguez-Iturbe, R J Johnson
The development of stress drives a host of biological responses that include the overproduction of a family of proteins named heat shock proteins (HSPs), because they were initially studied after heat exposure. HSPs are evolutionarily preserved proteins with a high degree of interspecies homology. HSPs are intracellular proteins that also have extracellular expression. The primary role of HSPs is to protect cell function by preventing irreversible protein damage and facilitating molecular traffic through intracellular pathways...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602291/surface-electromyographic-evaluation-of-the-neuromuscular-activation-of-the-inspiratory-muscles-during-progressively-increased-inspiratory-flow-under-inspiratory-resistive-loading
#16
H Sekiguchi, Y Tamaki, Y Kondo, H Nakamura, K Hanashiro, K Yonemoto, T Moritani, I Kukita
This study aimed to evaluate neuromuscular activation in the scalene and sternocleidomastoid muscles using surface electromyography (EMG) during progressively increased inspiratory flow, produced by increasing the respiratory rate under inspiratory-resistive loading using a mask ventilator. Moreover, we attempted to identify the EMG inflection point (EMGIP ) on the graph, at which the root mean square (RMS) of the EMG signal values of the inspiratory muscles against the inspiratory flow velocity acceleration abruptly increases, similarly to the EMG anaerobic threshold (EMGAT ) reported during incremental-resistive loading in other skeletal muscles...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602290/what-we-do-and-do-not-know-about-women-and-kidney-diseases-questions-unanswered-and-answers-unquestioned-reflection-on-world-kidney-day-and-international-woman-s-day
#17
EDITORIAL
G B Piccoli, M Alrukhaimi, Z-H Liu, E Zakharova, A Levin, World Kidney Day Steering Committee
Chronic kidney disease (CKD) affects approximately 10% of the world's adult population; it is within the top 20 causes of death worldwide, and its impact on patients and their families can be devastating. World Kidney Day and International Women's Day in 2018 coincide, thus offering an opportunity to reflect on the importance of women's health and specifically their kidney health, on the community, and the next generations, as well as to strive to be more curious about the unique aspects of kidney disease in women so that we may apply those learnings more broadly...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29602289/effect-of-iloprost-on-contractile-impairment-and-mitochondrial-degeneration-in-ischemia-reperfusion-of-skeletal-muscle
#18
Z Bagis, M Ozeren, B Buyukakilli, E Balli, S Yaman, D Yetkin, D Ovla
Purpose Acute lower extremity ischemia is still a main cause of mortality and morbidity in orthopedic traumatology and reconstructive surgery. In acute lower extremity ischemia, the skeletal muscles are the tissues that are the most vulnerable to ischemia. The aim of this study was to evaluate the effects of iloprost (IL) therapy on skeletal muscle contractile impairment and mitochondrial degeneration in an acute lower extremity ischemia-reperfusion rat model. Main Methods Forty Wistar albino rats were randomly divided into a control group and four experimental groups...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29278029/biochemical-status-oxidative-and-antioxidant-responses-after-3-month-specific-training-in-elite-karate-athletes
#19
H Jemili, M A Mejri, E Bouhlel, M Amri
Aim To investigate the effects of 3-month-long specific training program on biochemical status, oxidative and antioxidant responses in elite karatekas. Methods Twenty male karatekas [BMI: 21.9 ± 2.4 (kg/m2 )] participated in this study. They performed a 3-month specific training to prepare for an international competition. We measured selected biochemical parameters, the oxidative and antioxidant responses before (T0) and after 3 months of intense karate training (T1). Results We found significant increases in catalase activity (26...
December 1, 2017: Physiology International
https://www.readbyqxmd.com/read/29278028/post-transplantation-morphological-and-functional-changes-in-kidneys-from-expanded-criteria-donors
#20
B Borda, T Németh, A Ottlakan, C Keresztes, É Kemény, G Lázár
Introduction Despite an increase in the number of cadaver donors and overall organ transplantations, the dramatic increase in the waiting list makes it necessary to reconsider donor criteria. The authors wanted to examine whether differences could exist in the function and/or morphology of transplanted kidneys originated from expanded criteria donors (ECDs) and ideal donors 1 and 5 years after transplantation. Methods Kidney function and histopathologic findings were analyzed and compared 1 and 5 years after transplantation in 97 patients having ECD kidneys and in 178 patients who received ideal donor kidneys (IDK)...
December 1, 2017: Physiology International
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