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https://www.readbyqxmd.com/read/29727012/reliability-of-repeated-arm-crank-cardiopulmonary-exercise-tests-in-patients-with-small-abdominal-aortic-aneurysm
#1
J W Durrand, K Wagstaff, A Kasim, L Cawthorn, G R Danjoux, E Kothmann
Arm-crank ergometry may be useful in patients unable to pedal, for instance due to peripheral arterial disease. Twenty participants with small abdominal aortic aneurysm undertook two serial arm-crank tests and then a pedal test, four of whom had indeterminate anaerobic thresholds, precluding analysis. The mean (SD) peak arm and leg oxygen consumptions in 16 participants were 13.71 (2.62) ml.kg-1 .min-1 and 16.82 (4.44) ml.kg-1 .min-1 , with mean (SD) individual differences of 3.11 (2.48) ml.kg-1 .min-1 , p = 0...
May 4, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29627864/exercise-intensity-and-its-impact-on-relationships-between-salivary-immunoglobulin-a-saliva-flow-rate-and-plasma-cortisol-concentration
#2
Christof A Leicht, Victoria L Goosey-Tolfrey, Nicolette C Bishop
INTRODUCTION: Salivary secretory immunoglobulin A (sIgA), saliva flow rate and plasma cortisol concentrations have been shown to be influenced by exercise, particularly the intensity exercise is performed at, and circadian variation. The autonomic nervous system partly regulates salivary secretion, but it is not yet known whether cortisol also explains some variation in salivary parameters. METHODS: Twelve moderately trained male individuals ([Formula: see text]peak legs : 46...
April 7, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29604403/slow-loaded-breathing-training-improves-blood-pressure-lung-capacity-and-arm-exercise-endurance-for-older-people-with-treated-and-stable-isolated-systolic-hypertension
#3
Chulee Ublosakka-Jones, Phailin Tongdee, Orathai Pachirat, David A Jones
BACKGROUND: Hypertension and reduced lung function are important features of aging. Slow loaded breathing training reduces resting blood pressure and the question is whether this can also improve lung function. METHODS: Thirty-two people (67 ± 5 years, 16 male) with controlled isolated systolic hypertension undertook an eight weeks randomised controlled training trial with an inspiratory load of 25% maximum inspiratory pressure (MIP) at 6 breaths per minute (slow loaded breathing; SLB) or deep breathing control (CON)...
March 28, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29587874/the-effects-of-different-forms-of-daily-exercise-on-metabolic-function-following-short-term-overfeeding-and-reduced-physical-activity-in-healthy-young-men-study-protocol-for-a-randomised-controlled-trial
#4
Jean-Philippe Walhin, Yung-Chih Chen, Aaron Hengist, James Bilzon, James A Betts, Dylan Thompson
BACKGROUND: Short-term overfeeding combined with reduced physical activity impairs metabolic function and alters the expression of key genes within adipose tissue. We have shown that daily vigorous-intensity running can prevent these changes independent of any net effect on energy imbalance. However, which type, intensity and/or duration of exercise best achieves these benefits remains to be ascertained. METHODS/DESIGN: Forty-eight healthy young men will be recruited and randomly allocated to one of four experimental conditions for 1 week: (1) to ingest 50% more energy than normal by over-consuming their habitual diet whilst simultaneously restricting their physical activity below 4000 steps day-1 (i...
March 27, 2018: Trials
https://www.readbyqxmd.com/read/29543107/individuals-with-knee-osteoarthritis-demonstrate-interlimb-asymmetry-in-pedaling-power-during-stationary-cycling
#5
Harsh H Buddhadev, Daniel L Crisafulli, David N Suprak, Jun G San Juan
Cycling is commonly prescribed for physical rehabilitation of individuals with knee osteoarthritis (OA). Despite the known therapeutic benefits, no research has examined interlimb symmetry of power output during cycling in these individuals. We investigated the effects of external workload and cadence on interlimb symmetry of crank power output in individuals with knee OA versus healthy controls. Twelve older participants with knee OA and 12 healthy sex- and age-matched controls were recruited. Participants performed 2-minute bouts of stationary cycling at four workload-cadence conditions (75 W-60 rpm, 75 W-90 rpm, 100 W-60 rpm, and 100 W-90 rpm)...
March 15, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29517419/exercise-testing-protocol-using-a-roller-system-for-manual-wheelchair-users-with-spinal-cord-injury
#6
Kerri A Morgan, Kelly L Taylor, Susan M Tucker, W Todd Cade, Joseph W Klaesner
OBJECTIVE: Determine the validity and reliability of an exercise testing protocol to evaluate cardiorespiratory measures in manual wheelchair users (MWUs) with spinal cord injury (SCI) using a roller-based (RS) wheelchair system. DESIGN: Repeated measures within-subject design. SETTING: Community-based research laboratory. PARTICIPANTS: Ten adults with SCI requiring the use of a manual wheelchair. INTERVENTIONS: Not applicable...
March 8, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29511919/cardiorespiratory-and-perceptual-responses-to-self-regulated-and-imposed-submaximal-arm-leg-ergometry
#7
Mathew Hill, Christopher Talbot, Michael Puddiford, Michael Price
PURPOSE: This study compared cardiorespiratory and perceptual responses to exercise using self-regulated and imposed power outputs distributed between the arms and legs. METHODS: Ten males (age 21.7 ± 3.4 years) initially undertook incremental arm-crank ergometry (ACE) and cycle ergometry (CYC) tests to volitional exhaustion to determine peak power output (Wpeak ). Two subsequent tests involved 20-min combined arm-leg ergometry (ALE) trials, using imposed and self-regulated protocols, both of which aimed to elicit an exercising heart rate of 160 beats min-1 ...
March 6, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29494292/paralytic-and-non-paralytic-muscle-adaptations-to-exercise-training-vs-high-protein-diet-in-individuals-with-long-standing-spinal-cord-injury
#8
Ceren Yarar-Fisher, Keith Fl Polston, Mualla Eraslan, Kathryn Y Henley, Gizem I Kinikli, C Scott Bickel, Samuel T Windham, Amie B McLain, Robert A Oster, Marcas M Bamman
This study compares the effects of an 8-week iso-caloric high protein (HP) diet versus a combination exercise (Comb-Ex) regimen on paralytic vastus lateralis (VL) and non-paralytic deltoid muscle in individuals with long-standing spinal cord injury (SCI). Fiber type distribution, cross-sectional area (CSA), levels of translation initiation signaling proteins (Erk-1/2, Akt, p70S6K1, 4EBP1, RPS6, and FAK), and lean thigh mass were analyzed at baseline and after the 8-week interventions. A total of 11 participants (C5-T12 levels, 21...
March 1, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29485935/the-use-of-a-wheelchair-propulsion-field-test-to-determine-peak-heart-rate-in-children-and-adolescents-with-myelomeningocele
#9
Marisa Maia Leonardi-Figueiredo, Mariana Angélica de Souza, Elisangela Aparecida da Silva Lizzi, Luciano Fonseca Lemos de Oliveira, Julio Cesar Crescencio, Pedro Vellosa Schwartzmann, Lourenço Gallo, Ana Claudia Mattiello-Sverzut
PURPOSE: We analyzed the evolution and pattern of heart rate (HR) during the 12-minute wheelchair propulsion field test (WPFT) and compared the peak HR (HRpeak ) from the WPFT to the HRpeak obtained in the progressive cardiopulmonary exercise test on arm cranking ergometer (ACT). We aimed to determine if the field test detects the HRpeak consistently and could be used in clinical practice. METHODS: Eleven wheelchair-using children and adolescents with myelomeningocele (aged 8-15 y) performed a maximal ACT and a 12-minute WPFT...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29449080/influence-of-exercise-modality-on-cardiac-parasympathetic-and-sympathetic-indices-during-post-exercise-recovery
#10
Scott Michael, Ollie Jay, Kenneth S Graham, Glen M Davis
OBJECTIVES: This study investigated indirect measures of post-exercise parasympathetic reactivation (using heart-rate-variability, HRV) and sympathetic withdrawal (using systolic-time-intervals, STI) following upper- and lower-body exercise. DESIGN: Randomized, counter-balanced, crossover. METHODS: 13 males (age 26.4±4.7years) performed maximal arm-cranking (MAX-ARM) and leg-cycling (MAX-LEG). Subsequently, participants undertook separate 8-min bouts of submaximal HR-matched exercise of each mode (ARM and LEG)...
February 12, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29371106/cardiorespiratory-demand-and-rate-of-perceived-exertion-during-overground-walking-with-a-robotic-exoskeleton-in-long-term-manual-wheelchair-users-with-chronic-spinal-cord-injury-a-cross-sectional-study
#11
Manuel J Escalona, Rachel Brosseau, Martin Vermette, Alain Steve Comtois, Cyril Duclos, Mylène Aubertin-Leheudre, Dany H Gagnon
BACKGROUND: Many wheelchair users adopt a sedentary lifestyle, which results in progressive physical deconditioning with increased risk of musculoskeletal, cardiovascular and endocrine/metabolic morbidity and mortality. Engaging in a walking program with an overground robotic exoskeleton may be an effective strategy for mitigating these potential negative health consequences and optimizing fitness in this population. However, additional research is warranted to inform the development of adapted physical activity programs incorporating this technology...
January 31, 2018: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29368457/performance-comparison-of-the-moxy-and-portamon-near-infrared-spectroscopy-muscle-oximeters-at-rest-and-during-exercise
#12
Chris J McManus, Jay Collison, Chris E Cooper
The purpose of the study was to compare muscle oxygenation as measured by two portable, wireless near-infrared spectroscopy (NIRS) devices under resting and dynamic conditions. A recently developed low-cost NIRS device (MOXY) was compared against an established PortaMon system that makes use of the spatially resolved spectroscopy algorithm. The influence of increasing external pressure on tissue oxygen saturation index (TSI) indicated that both devices are stable between 2 and 20 mmHg. However, above this pressure, MOXY reports declining TSI values...
January 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29340005/comparison-of-aerobic-performance-testing-protocols-in-elite-male-wheelchair-basketball-players
#13
Bartosz Molik, Andrzej Kosmol, Natalia Morgulec-Adamowicz, Judit Lencse-Mucha, Anna Mróz, Karol Gryko, Jolanta Marszałek
In wheelchair sports, aerobic performance is commonly assessed with the use of an arm crank ergometer (ACE), a wheelchair ergometer (WCE) or a wheelchair treadmill (WCT). There are different protocols to identify peak oxygen uptake in wheelchair sports; however, only a few protocols have been applied to evaluate these conditions in wheelchair basketball players. The purpose of this study was to compare physiological responses during maximal exercise testing with the use of ACE and WCT in wheelchair basketball players...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29334345/arm-crank-ergometry-improves-cardiovascular-disease-risk-factors-and-community-mobility-independent-of-body-composition-in-high-motor-complete-spinal-cord-injury
#14
James J Bresnahan, Gary J Farkas, Jody L Clasey, James W Yates, David R Gater
OBJECTIVE: Evaluate the effect of aerobic exercise using arm crank ergometry (ACE) in high motor complete (ISNCSCI A/B) spinal cord injury (SCI) as primarily related to cardiovascular disease (CVD) risk factors and functional mobility and secondarily to body composition and metabolic profiles. DESIGN: Longitudinal interventional study at an academic medical center. METHODS: Ten previously untrained participants (M8/F2, Age 36.7 y ± 10.1, BMI 24...
January 15, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29299227/strategies-and-performances-of-functional-electrical-stimulation-cycling-using-the-berkelbike-with-spinal-cord-injury-in-a-competition-context-cybathlon
#15
Rik Berkelmans, Billy Woods
The functional electrical stimulation (FES) bicycle race was an event at the Cybathlon, held in Zurich October 2016. BerkelBike BV (The Netherlands) in collaboration with Imperial College London entered a spinal cord injury pilot who had tetraplegia to compete in this event. The BerkelBike Pro is a commercially available FES capable recumbent which is normally driven by the arm- and leg power. The arm cranking part was disabled. Now the tricycle must be driven using the pilots own lower limb muscles through stimulation in accordance with race rules...
December 5, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29247712/effects-of-normobaric-hypoxia-on-upper-body-critical-power-and-anaerobic-working-capacity
#16
Michael B La Monica, David H Fukuda, Tristan M Starling-Smith, Ran Wang, Jay R Hoffman, Jeffrey R Stout
PURPOSE: To evaluate the effects of moderate normobaric hypoxia on the parameters of the work-time relationship in the upper body. METHODS: Twenty-one recreationally active men completed a graded exercise test in both normobaric hypoxia (H) and normoxia (N) to exhaustion on an arm ergometer to determine V̇O2 peak and peak power output (PPO). Each participant completed four constant work-rate (CWR) arm-cranking tests at 90-120% PPO in both environmental conditions...
February 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29238257/validation-of-an-arm-crank-ergometer-test-for-use-in-sedentary-adults
#17
Alexandros Mitropoulos, Anil Gumber, Helen Crank, Markos Klonizakis
The maximal oxygen uptake (V̇O2 peak) test is an approved pre-operative examination tool, in a clinical setting: Both V̇O2 peak and anaerobic threshold indicate a patient's physiological tolerance for major surgery and post-operative mortality, with cycle ergometry being routinely used for V̇O2 peak tests in clinical settings, in many European countries. Nevertheless, the opportunities to assess populations with restricted mobility of the lower limbs are limited, as alternative methods (such as an arm-crank test protocol) to assess V̇O2 peak are yet to be established...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29227294/immediate-and-24-h-blood-pressure-lowering-effects-of-arm-crank-exercise-in-patients-with-traumatic-lower-limb-amputation-a-randomized-cross-over-study
#18
Marcelle Paula-Ribeiro, Daniel G Martinez, Jorge R P Lima, Mateus C Laterza
AIM: This study aimed to investigate the clinic and 24-h postexercise hypotension (PEH) after a moderate-intensity arm crank exercise session in individuals with traumatic lower-limb amputation. PARTICIPANTS AND METHODS: Nine men (46±17 years) with unilateral traumatic lower-limb amputation participated in two experimental sessions conducted randomly: an aerobic exercise (EXE: arm crank ergometer, 30 min) or a control session (CON: participants remained seated on the cycle ergometer, 30 min)...
April 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29077990/supervised-exercise-training-as-an-adjunct-therapy-for-venous-leg-ulcers-a-randomized-controlled-feasibility-trial
#19
M Klonizakis, G A Tew, A Gumber, H Crank, B King, G Middleton, J A Michaels
BACKGROUND: Venous leg ulcers (VLUs) are typically painful and heal slowly. Compression therapy offers high healing rates; however, improvements are not usually sustained. Exercise is a low-cost, low-risk and effective strategy for improving physical and mental health. Little is known about the feasibility and efficacy of supervised exercise training used in combination with compression therapy patients with VLUs. OBJECTIVES: To assess the feasibility of a 12-week supervised exercise programme as an adjunct therapy to compression in patients with VLUs...
October 27, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/29074025/human-responses-in-heat-comparison-of-the-predicted-heat-strain-and-the-fiala-multi-node-model-for-a-case-of-intermittent-work
#20
Karin Lundgren-Kownacki, Natividad Martínez, Bo Johansson, Agnes Psikuta, Simon Annaheim, Kalev Kuklane
Two mathematical models of human thermal regulation include the rational Predicted Heat Strain (PHS) and the thermophysiological model by Fiala. The approaches of the models are different, however, they both aim at providing predictions of the thermophysiological responses to thermal environments of an average person. The aim of this study was to compare and analyze predictions of the two models against experimental data. The analysis also includes a gender comparison. The experimental data comprised of ten participants (5 males, 5 females, average anthropometric values were used as input) conducting an intermittent protocol of rotating tasks (cycling, stacking, stepping and arm crank) of moderate metabolic activities (134-291W/m(2)) with breaks in-between in a controlled environmental condition (34°C, 60% RH)...
December 2017: Journal of Thermal Biology
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