Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"Work Rate"”.
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Multifrequent work rate forcings in the assessment of oxygen uptake kinetics.
… maintain homeostasis at the cellular level. The rate at which homeostasis is established is largely dependent on the system's structural and physiological integrity. Evidence suggests that any impairment in the functioning of the system might be reflected in a determination of oxygen uptake …
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Investigations into transient respiratory control using the work rate of breathing and a non-linear breather
… during the steady-state of exercise for each workload. Then, the feedback control model was used to simulate the transient exercise states. The alveolar ventilation was calculated in the feedback control model using a proportional (mean) and a derivative (rate) control. Then, the Van der Pol …
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THE EFFECTS OF ACUTE DIETARY NITRATE SUPPLEMENTATION ON CONSTANT WORK RATE EXERCISE IN CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD) PATIENTS
Dietary nitrate supplementation has been shown to positively influence the physiological responses to exercise and improve exercise capacity. The purpose of this study was to investigate the effects of acute dietary nitrate ingestion on the submaximal,
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The Effects of Acute Dietary Nitrate Supplementation on Constant Work Rate Exercise in Chronic Obstructive Pulmonary Disease (COPD) Patients
… study was to investigate the effect of acute nitrate supplementation in the form of beetroot juice on exercise capacity in patients with COPD. Six mild to moderately diseased patients completed four visits and were randomized to one of two treatment groups (beetroot juice, for visit 3, placebo …
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High-Intensity Interval Training in the Heat
… prescription, and recovery mode influence work rate adjustments, thermal and cardiovascular strain, and maximal aerobic capacity (V̇O2max). Three studies investigated these outcomes between the first and fifth round of HIIT (8-min warm-up and rounds of 4-min work×3-min recovery). V̇O2max …
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Examination of a Self-Selected Speed Graded Exercise Test using an Automated Treadmill as a Valid Means to Measure VO2max
… whereas allowing subjects to self-select their work rate does. Conflicting results exist in the literature for whether allowing subjects to self-select their work rate (SP) has resulted in a different VO2max compared to TP. Limitations to these studies include the use of a cycling modality and …
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The application of estimation and control techniques in 2 modes of exercise for the spinal cord injured
… spinal cord injury. Preliminary data has demonstrated the feasibility of FES cycling in the paediatric SCI population. The use of an electric motor to provide torque assistance where required allows the exercise to continue for longer periods and over a wider range of cadences. In this thesis, a …
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Physiological characteristics, activity patterns and physiological responses of elite women field hockey players during competition
… of playing positions characterised by a high work-rate.
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U-SAFT⁹⁰ simulates the internal and external loads of university-level soccer match play
… that subsequently enables the examination of work rate. Changes in work-rate may indicate fluctuations in performance which can also heighten the risk of injury and susceptibility to conceding to opponents. As a result, preparatory, conditioning and nutritional interventions can be employed …
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Metabolic responses to soccer-specific intermittent exercise.
… and whole body pre-cooling on performance. The work-rate profiles of elite South American soccer players and English Premier League players, performing in international and club level respectively, were determined. English Premier League players covered a greater total distance during a game …
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Computation of upper and lower bounds in limit analysis using second-order cone programming and mesh adaptivity
… saddle point problem, where the internal work rate is maximized over an admissible set of stresses -defined by a yield condition- and minimized over the linear space of kinematically admissible velocities for which the external work rate equals the unity. When strong duality is applied to …
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On the fretting wear of nuclear power plant heat exchanger tubes using a fracture mechanics approach : theory and verification
The analysis carried out in this research work, showed the inconsistencies observed in trying to identify the tube wear in heat exchangers. It is seen that the associated error could be an order of magnitude higher than the expected value, indicating the possibilities of failure at less than the …
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The Effects of Short Work Versus Longer Work Periods Within Intermittent Exercise on VO2 Kinetics, Muscle Deoxygenation and Energy System Contribution
… intensity continuous (CONT), and intermittent work; 25 s (25 s work: 3 s recovery (20W)), and 10 s (10 s work: 3 s recovery (20W)), were compared. The τV̇O2 were similar in all conditions (CONT: 44.2 s±9; 25 s: 38.9 s±10; 10 s: 39.4 s±8, p > 0.05), whereas the HHb/ V̇O2 overshoot decreased …
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Nitrate supplementation does not alter the V̇O2p SC-muscle fatigue relationship in recreationally active men
… development relationship using dietary nitrate (NO3- ) supplementation during very heavy (VH)-intensity constant-work rate cycling exercise. Using a double- blind, block-randomised, crossover design, 8 healthy men (age, 24±2 yr [mean±SD]; V̇O2p-max, 43.8±6.0 mL/kg/min) consumed NO3- -rich …
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Acute metabolic response to functional electrical stimulation cycling in people with MS with severe mobility impairments
… fitness (CRF). Exercise training is one strategy for improving CRF, however there are limited modalities for safely and effectively increasing CRF in individuals with MS with severe disability. In this thesis a systematic review of literature pertaining to exercise training and individuals …
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The Impact of Interval Intensity in Overweight Young Men
… three weeks at either 70% or 100% of their peak work rate on a cycle ergometer. Aerobic capacity measurements, time to completion trials, muscle biopsies, and fasted blood samples were all performed pre and post training. Analyses of aerobic capacity and exercise performance demonstrate greater …
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Movement strategies in elite amateur boxing
… was developed to objectively assess movement strategies of boxers. Sparring in training and competition requires ~ 19 punches per minute. The two boxers analysed exhibit clearly differing styles. Front-foot boxers spend more time in the centre of the ring, and back-foot boxers spend …
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Limits to exogenous glucose oxidation by skeletal muscle during prolonged, moderate-intensity exercise in man
Several factors may determine the rate. at which exogenous carbohydrate (CHO) is utilised by the human working muscles during prolonged (> 90 min moderate-intensity (63% of peak sustained power output [PPO]) exercise. These include i) the rate of gastric emptying of an ingested fluid, ii) the rate …
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The Impact of High-Cadence Cycling on Overground Running Performance in Recreational Runners
… performance by increasing cadence and reducing work rate when cycling prior to running. However, most of this work has focused on triathletes and older adults. Therefore, the purpose of this study was to examine the acute effects of HCC on subsequent 800 m running performance and spatiotemporal …
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Extension of activity analysis methodology to maintenance, shutdown, and turnarounds in petrochemical facilities
… helps them to communicate improvement strategies with each other and within their organization beyond construction leading into maintenance and shutdown turnarounds. Activity Analysis is a productivity assessment and improvement method developed by the Construction Industry Institute …
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