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Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme

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https://www.readbyqxmd.com/read/28340302/does-the-type-of-activity-break-from-prolonged-sitting-differentially-impact-on-post-prandial-blood-glucose-reductions-an-exploratory-analysis
#1
Robyn N Larsen, Paddy C Dempsey, Francis Dillon, Megan Grace, Bronwyn A Kingwell, Neville Owen, David W Dunstan
Frequent breaks in prolonged sitting are associated beneficially with glycaemic control. However, the contribution of energy expenditure to these relationships has not been well characterised. In this exploratory analysis, data from three laboratory trials that standardised test meals, cohort characteristics (overweight/obese, sedentary), and break frequency and duration were pooled. Higher energy expenditures of different types of breaks (standing, light- or moderate-intensity walking) were associated with lower post-prandial glucose and insulin responses in a dose-dependent manner...
March 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28334548/waist-circumference-is-associated-with-liver-fat-in-black-and-white-adolescents
#2
SoJung Lee, Jennifer L Kuk, Chris Boesch, Silva Arslanian
We examined whether waist circumference (WC) is associated with liver fat in black and white adolescents. Liver fat was measured using a 3T proton magnetic resonance spectroscopy (1H-MRS) in 152 overweight/obese adolescents (94 black and 58 white, BMI >85th percentile, 12-18 yrs) without liver diseases or diabetes. WC was measured at the last rib. Total and visceral adipose tissue (VAT) were measured by DXA and MRI, respectively. The proportion of fatty liver (defined as liver fat >5.0% by 1H-MRS) was lower (P<0...
March 23, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177721/mechanisms-of-nicotine-induced-cutaneous-vasodilation-and-sweating-in-young-adults-roles-for-kca-katp-and-kv-channels-nitric-oxide-and-prostanoids
#3
Naoto Fujii, Jeffrey C Louie, Brendan D McNeely, Tatsuro Amano, Takeshi Nishiyasu, Glen P Kenny
We evaluated the influence of K(+) channels (i.e., Ca(2+)-activated K(+) (KCa), ATP-sensitive K(+) (KATP), and voltage-gated K(+) (KV) channels) and key enzymes (nitric oxide synthase (NOS) and cyclooxygenase (COX)) on nicotine-induced cutaneous vasodilation and sweating. Using intradermal microdialysis, we evaluated forearm cutaneous vascular conductance (CVC) and sweat rate in 2 separate protocols. In protocol 1 (n = 10), 4 separate sites were infused with (i) lactated Ringer (Control), (ii) 50 mmol·L(-1) tetraethylammonium (KCa channel blocker), (iii) 5 mmol·L(-1) glybenclamide (KATP channel blocker), and (iv) 10 mmol·L(-1) 4-aminopyridine (KV channel blocker)...
March 22, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177715/gut-training-the-impact-of-two-weeks-repetitive-gut-challenge-during-exercise-on-gastrointestinal-status-glucose-availability-fuel-kinetics-and-running-performance
#4
Ricardo J S Costa, Atlanta Miall, Anthony Khoo, Christopher Rauch, Rhiannon Snipe, Vera Camões-Costa, Peter Gibson
Due to gastrointestinal tract adaptability, the study aimed to determine the impact of gut-training protocol over 2 weeks on gastrointestinal status, blood glucose availability, fuel kinetics, and running performance. Endurance runners (n = 25) performed a gut-challenge trial (GC1), consisting of 2 h running exercise at 60% V̇O2max whilst consuming gel-discs containing 30 g carbohydrates (2:1 glucose/fructose, 10% w/v) every 20 min and a 1 h distance test. Participants were then randomly assigned to a carbohydrate gel-disc (CHO-S), carbohydrate food (CHO-F), or placebo (PLA) gut-training group for 2 weeks of repetitive gut-challenge intervention...
March 22, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28322060/malnutrition-or-frailty-overlap-and-evidence-gaps-in-the-diagnosis-and-treatment-of-frailty-and-malnutrition
#5
Celia V Laur, Tara McNicholl, Renata Valaitis, Heather H Keller
There is increasing awareness of the detrimental health impact of frailty on older adults and of the high prevalence of malnutrition in this segment of the population. Experts in these 2 arenas need to be cognizant of the overlap in constructs, diagnosis, and treatment of frailty and malnutrition. There is a lack of consensus regarding the definition of malnutrition and how it should be assessed. While there is consensus on the definition of frailty, there is no agreement on how it should be measured. Separate assessment tools exist for both malnutrition and frailty; however, there is intersection between concepts and measures...
March 21, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28319676/examination-of-associations-between-chaos-in-the-home-environment-serum-cortisol-level-and-dietary-fat-intake-among-parents-of-preschool-age-children
#6
Laura Margaret MacRae, Gerarda Darlington, Jess Haines, David W L Ma
This research investigated associations between home environment chaos, fat intake, and morning serum cortisol level in 44 parents of preschool-age children. Chaos was measured using the Confusion, Hubbub, and Order Scale, and fat intake was quantified using the Block fat screener. Linear regression analyses demonstrated that chaos and cortisol were both associated with fat intake (β^ = 0.53, p= 0.001;β^ = 0.03, p= 0.0002), and there was a non-significant association between chaos and cortisol.
March 20, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28319671/amelioration-of-oxidative-stress-by-dietary-fenugreek-trigonella-foenum-graecum-l-seeds-is-potentiated-by-onion-allium-cepa-l-in-streptozotocin-induced-diabetic-rats
#7
Seetur R Pradeep, Krishnapura Srinivasan
Oxidative stress has a crucial role in the progression of diabetes and its complications. Soluble fibre-rich fenugreek seeds (Trigonella foenum-graecum L.) are understood to have a beneficial effect in the management of diabetes. Previously, we have shown that the amelioration of diabetic hyperglycemia and related metabolic abnormalities was potentiated by onion (Allium cepa L.) in experimental rats. The present study evaluated the additive beneficial effect of dietary fenugreek seeds (10%) and onion (3%) on oxidative stress in diabetic rats...
March 20, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28288302/whole-body-active-warm-up-and-inspiratory-muscle-warm-up-do-not-improve-running-performance-when-carrying-thoracic-loads
#8
Mark A Faghy, Peter Ian Brown
Whole body active warm ups (AWU) and inspiratory muscle warm up (IMW) prior to exercise improves performance on some endurance exercise tasks. This study investigated the effects of AWU with and without IMW upon 2.4 km running time-trial performance while carrying a 25 kg backpack, a common task and backpack load in physically demanding occupations. Participants (n = 9) performed five 2.4 km running time-trials with a 25 kg thoracic load preceded in random order by 1) IMW comprising 2 x 30 inspiratory efforts against a pressure-threshold load of 40 % maximal inspiratory pressure (PImax), 2) 10 min unloaded running (AWU) at lactate turnpoint (10...
March 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28288284/sweet-potato-ipomoea-batatas-attenuates-diet-induced-aortic-stiffening-independent-of-changes-in-body-composition
#9
Tyler Garner, An Ouyang, Adam J Berrones, Marilyn S Campbell, Bing Du, Bradley S Fleenor
We hypothesized a sweet potato intervention would prevent high fat diet-induced aortic stiffness, which would be associated with decreased arterial oxidative stress and increased mitochondrial uncoupling. Young (8-week old) C57BL/6J mice were randomly divided into 4 groups: low fat (LF, 10% fat), high fat (HF, 60% fat), low fat sweet potato (LFSP, 10% fat containing 260.3 ug/kcal SP), or high fat sweet potato diet (HFSP, 60% fat containing 260.3 ug/kcal SP) for 16 weeks. Compared to LF and LFSP, HF and HFSP fed mice had increased body mass and percent fat mass with lower percent lean mass (all, P<0...
March 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28278387/12-days-of-altitude-exposure-at-1800m-does-not-increase-resting-metabolic-rate-in-elite-rowers
#10
Amy L Woods, Laura A Garvican-Lewis, Anthony Rice, Kevin Grant Thompson
Four elite rowers completed a twelve-day altitude training camp living at 1800m, and training at 1800m and 915m, to assess changes in resting metabolic rate (RMR). RMR and body composition were assessed PRE and POST-camp. Downward trends in RMR and body composition were observed post-altitude: absolute RMR (percent change: -5.2%), relative RMR (-4.6%), body mass (-1.2%), and fat mass (-4.1%), likely related to the hypoxic stimulus and an imbalance between training load and energy intake.
March 9, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28273428/mechanical-biochemical-and-dietary-determinants-of-the-functional-model-of-bone-development-of-the-radius-in-children-and-adolescents
#11
Izabella Atena Ludwa, Bareket Falk, Wendy E Ward, Kimberley L Gammage, Panagiota Klentrou
This study examined the degree to which various mechanical, biochemical and dietary factors are related to non-weight bearing bone properties in 172 healthy peri-pubertal children (11.7±2.0 years). Dominant radial speed of sound (rSOS) was measured by transaxial quantitative ultrasound at distal radius. Potential modulating factors included somatic maturity offset (years from age of peak height velocity), grip strength, forearm lean cross-sectional area (CSA), physical activity, nutritional intake and amino-terminal cross-linking propeptide (NTx), reflecting bone resorption...
March 8, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28264170/a-pilot-study-validity-and-reliability-of-the-csep-path-pasb-q-and-a-new-leisure-time-physical-activity-questionnaire-to-assess-physical-activity-and-sedentary-behaviors
#12
Jonathon Richard Fowles, Myles William O'Brien, William Robert Wojcik, Lisette d'Entremont, Christopher A Shields
The purpose of this study was to evaluate the accuracy of two newly developed PA questionnaires: the Canadian Society for Exercise Physiology (CSEP) Physical Activity and Sedentary Behavior Questionnaire (PASB-Q) and a newly modified Leisure Time Physical Activity Questionnaire (mLTPA-Q). These questionnaires were compared to objective measurements of physical activity and fitness (accelerometry and physiological assessments) in 35 adults, before and after a week of daily living activity. Objectively measured moderate-to-vigorous intensity aerobic physical activity (MVPA) was moderately correlated with the PASB-Q's physical activity vital sign (PAVS) (r=0...
March 6, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28249121/roselle-supplementation-prevents-nicotine-induced-vascular-endothelial-dysfunction-and-remodelling-in-rats
#13
Lislivia Yiang Nee Si, Yusof Kamisah, Anand Ramalingam, Yi Cheng Lim, Siti Balkis Budin, Satirah Zainalabidin
Vascular endothelial dysfunction (VED) plays an important role in initiation of cardiovascular diseases. Roselle which enriched with antioxidants demonstrates high potential in alleviating hypertension. This study was undertaken to investigate effects of roselle supplementation on VED and remodelling in a rodent model with prolonged nicotine administration. Male Sprague-Dawley rats (n=6 per group) were administered with 0.6 mg/kg nicotine for 28 days to induce VED. The rats were given either roselle (100 mg/kg) or normal saline 30 minutes prior to nicotine injection daily...
March 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28249119/enhanced-task-related-brain-activation-and-resting-perfusion-in-healthy-older-adults-after-chronic-blueberry-supplementation
#14
Joanna L Bowtell, Zainie Aboo-Bakkar, Myra Conway, Anna-Lynne R Adlam, Jonathan Fulford
Blueberries are rich in flavonoids, which possess antioxidant and anti-inflammatory properties. High flavonoid intakes attenuate age-related cognitive decline, but data from human intervention studies are sparse. We investigated whether 12 weeks of blueberry concentrate supplementation improved brain perfusion, task-related activation and cognitive function in healthy older adults. Participants were randomised to consume either 30 ml blueberry concentrate providing 387 mg anthocyanidins (5 female, 7 male; age 67...
March 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28235185/diclofenac-pretreatment-modulates-exercise-induced-inflammation-in-skeletal-muscle-of-rats-through-the-tlr4-nf-%C3%AE%C2%BAb-pathway
#15
Rômulo Pillon Barcelos, Guilherme Bresciani, Maria José Cuevas, Susana Martínez-Flórez, Félix Antunes A Soares, Javier González-Gallego
Non-steroidal anti-inflammatory drugs, such as diclofenac, are widely used to treat inflammation and pain in several conditions, including sports injuries. This study analyzes the influence of diclofenac on the TLR-NF-kB pathway in skeletal muscle of rats submitted to acute eccentric exercise. Twenty male Wistar rats were divided into four groups: control-saline, control-diclofenac, exercise-saline and exercise-diclofenac. Diclofenac or saline were administered for 7 days prior to an acute eccentric exercise bout...
February 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28231435/impact-of-a-competition-with-two-consecutive-matches-in-a-day-on-physical-performance-in-young-tennis-players
#16
Cesar Gallo-Salazar, Juan Del Coso, David Barbado, Alejandro Lopez-Valenciano, Francisco Javier Santos-Rosa, David Sanz-Rivas, Manuel Moya, Jaime Fernandez-Fernandez
The purpose of this study was to analyze the effects of playing two tennis matches on the same day on physical performance in young tennis players. Twelve well-trained young tennis players took part in a simulated tennis competition consisting of two tennis matches on the same day (morning and afternoon sessions). Before and the day after the competition, physical performance was measured using a battery of countermovement jumps (CMJ), a 10-m sprint, the 5-0-5 agility test, hip, grip and shoulder maximal isometric strength, shoulder range of motion (ROM) and a serve velocity test...
February 23, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28226219/dietary-inflammatory-index-and-odds-of-colorectal-cancer-in-a-case-control-study-from-jordan
#17
Nitin Shivappa, James R Hébert, Susan E Steck, Lorne J Hofseth, Ihab Shehadah, Kamal E Bani-Hani, Tareq Al-Jaberi, Majed Al-Nusairr, Dennis Heath, Reema Tayyem
BACKGROUND: Dietary components that promote inflammation of the colon have been suggested to be risk factors in the development of colorectal cancer (CRC). The possible link between inflammatory potential of diet and CRC has been investigated in several developed or Western countries. Despite the fact that dietary choices in the Middle East differ markedly from those in the West, results have not been reported from any study conducted in a Middle-Eastern population. We examined the association between dietary inflammatory index (DII)TM scores and CRC in a case-control study conducted in Jordan...
February 22, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28212491/food-ingestion-in-an-upright-sitting-position-increases-post-prandial-amino-acid-availability-when-compared-to-food-ingestion-in-a-lying-down-position
#18
Andrew M Holwerda, Kaatje Lenaerts, Jörgen Bierau, Will K W H Wodzig, Luc J C van Loon
Dietary protein digestion and absorption kinetics determine the post-prandial increase in muscle protein synthesis. We recently demonstrated that body position during feeding can modulate the post-prandial rise in plasma amino acid availability. Here we investigated whether protein ingestion in an upright sitting body position accelerates gastric emptying and improves dietary protein digestion and subsequent amino acid absorption compared with feeding in a supine lying body position. In a crossover design, eight young males (26±1 y, 24...
February 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28208021/exercise-timing-and-blood-lactate-concentrations-in-individuals-with-type-2-diabetes
#19
Timothy D Heden, Ying Liu, Jill A Kanaley
The purpose of this study was to characterize how resistance exercise prior to or after a meal alters fasting and postprandial blood lactate concentrations in individuals with type 2 diabetes. Obese individuals with type 2 diabetes (N=12) completed three, 2-d trials including: 1) no exercise (NoEx), 2) resistance exercise prior to dinner (Ex-M), and 3) resistance exercise beginning 45-min postdinner (M-Ex). During day one of each trial fasting and postprandial blood lactate concentrations, perceived exertion, and substrate oxidation were measured, and subsequently on day two the following morning fasting blood lactate was measured...
February 16, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28199799/the-efficacy-of-protein-supplementation-during-recovery-from-muscle-damaging-concurrent-exercise
#20
Lee Eddens, Sarah Browne, Emma J Stevenson, Brad Sanderson, Ken van Someren, Glyn Howatson
This study investigated the effect of protein supplementation on recovery following muscle-damaging exercise, which was induced with a concurrent exercise design. Twenty-four well-trained male cyclists were randomised to three independent groups receiving 20 g protein hydrolysate, iso-caloric carbohydrate or low-calorific placebo supplementation, per serve. Supplement serves were provided twice daily, from the onset of the muscle-damaging exercise, for a total of four days and in addition to a controlled diet (6 g•kg<sup>-1</sup>•d<sup>-1</sup> carbohydrate, 1...
February 15, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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