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Dissertations / Theses on the topic 'Exercise – Physiological aspects'

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Published: 4 June 2021

Last updated: 30 July 2024

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1

Swartz, Ann M. "A comparison of the health and fitness benefits received with varying quantities of energy expenditure." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1115731.

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The Surgeon General's Report on Physical Activity and Health recommends expending 200 kcals "on most, if not all days of the week" (1000 to 1400 kcals/week) as a minimum quantity of exercise energy expenditure (EE) required to obtain health benefits. The ACSM recommends expending a minimum of 1000 kcals/week to receive fitness benefits. The purpose of this study was to evaluate the effect of EE above and below 1200 kcals/week on health and fitness benefits. Twenty-six previously sedentary males and females (mean age = 47 ± 2 years), with at least one risk factor for CAD completed the 22-32 wee

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2

Hart, Linda E. "The influence of a single session of aerobic exercise on blood pressure during daily activities." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08182009-040432/.

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3

Xu, Fan 1960. "Effect of prolonged exercise on running economy." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68149.

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The purpose of this study was to investigate the effect of prolonged exercise on running economy. Fourteen male long distance runners performed two 90 minute runs on an outdoor 400m track at velocities equal to 65 and 80% of VO$ sb2$max. Prior to and following each 90 minute run, running economy (RE) was measured as the steady-state VO$ sb2$ during treadmill runs at speeds of 188 and 228 m/min. During the 90-min run at 65% of VO$ sb2$max, the mean weight loss was 1.3 kg. The HR was 143 bpm between minutes 5-10 and increased to 150 bpm between minutes 85-90. During the 90-min run at 80% of VO$

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4

Scordo, Kristine A. Bludau. "The effects of aerobic exercise training on symptomatic females with mitral valve prolapse syndrome." Connect to resource, 1990. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1244145517.

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5

Bozac, Anna Elena. "Determining exogenous glucose oxidation during moderate exercise." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28736.

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The purpose of this study was to determine the quantity of a glucose drink oxidized during cycle ergometer exercise at 60% VO₂max for 75 minutes. A second purpose was to determine if the glucose drink improved sprint time to exhaustion at 90% VO₂max after 75 minutes of exercise. Six trained male cyclists (VO₂max > 60 ml•kg⁻¹•min•¹) exercised on three occasions during which they ingested either water ad lib (W), ¹³C-cornsyrup (100 g, 2.02 M) + water ad lib (CS), or NaH¹²CO₃/NaH¹³CO₃ mixture (5 mg•kg⁻¹, 1% ¹³C-enriched) + water ad lib (B). Treatments B and CS were ingested after 5 minutes of cyc

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6

Conley, Travis B. "Growth response to resistance exercise : influence of exercise device." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1395457.

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The purpose of this study was to compare the growth response elicited by an acute bout of resistance exercise (RE) conducted on a traditional weight stack device (WS) and a flywheel device (FW). Eight recreationally trained males (25 ± 9 y, 77 ± 27 kg) performed 4 sets of 7 repetitions of bilateral knee extension on each exercise device separated by 7 days. Muscle biopsies were obtained from the vastus lateralis at rest and 4 hrs post-exercise to examine the expression of selected myogenic and proteolytic genes. RE increased (P < 0.05) mRNA expression of Myogenin (3.6 vs. 3.6 fold), and MyoD (

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7

Reardon, Constance R. "Exercise and premenstrual syndrome." Virtual Press, 1986. http://liblink.bsu.edu/uhtbin/catkey/471854.

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Premenstrual syndrome (PMS) is a term used to describe a number of symptoms affecting women approximately two weeks prior to menstruation, and ceasing with the onset of menstrual flow. The general physiological and psychological adaptations to training suggest that physical activity could lessen some PMS symptoms. Therefore, the purpose of this study was twofold: 1) to compare the number of PMS symptoms of intercollegiate athletes with those of sedentary college age women, and 2) to determine if training reduced the severity of PMS symptoms in a group of previously sedentary women.In study #1,

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8

Lee, Jonah D. "The effects of pre-exercise carbohydrate supplementation on anaerobic exercise performance in adolescent males." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1366300.

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This study examined the effects of pre-exercise carbohydrate (CHO) supplementation on anaerobic exercise performance in adolescent males (n =11; 15.0 ± 0.9 yrs). On separate days, subjects consumed either a CHO or a placebo (PL) beverage followed by 2 Wingate anaerobic tests (WAnT) separated with ten by 10-second sprints. Peak (PP), mean power (MP) and fatigue index (FI) were assessed. Venous blood samples were obtained and analyzed for glucose, lactate, insulin, and catecholamines. A trial by time ANOVA (P < 0.05) was used in the analysis. PP and MP tended to be higher (P < 0.09) in CHO versu

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9

Hasson, Christopher J. "Neural and mechanical influences on the initation of the squat jump." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1260619.

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The purpose of this research was to examine the effects of a premovement silent period (PSP), and an involuntary small amplitude countermovement (CM) on the maximal height of the squat jump (SJ). Fifteen elite male volleyball players (20.6 ± 1.6 yrs) and thirteen untrained males (20.2 ± 1.7 yrs) performed ten maximal effort SJs from identical starting positions. The electromyographic activity of the vastus lateralis and biceps femoris was measured in conjunction with the vertical ground reaction force, and the vertical displacement measured by a cable-extension transducer. The presence of a PS

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10

Burns, Jennifer Marie. "Effects of choline ingestion on endurance performance." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/539635.

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Plasma choline levels have been reported to be significantly reduced in athletes at the endof prolonged, exhaustive exercise (marathon running), and this may affect the release of acetylcholine at the neuromuscular junction (16). The purpose of the present investigation was to examine the influence of two levels of choline (from soy lecithin) ingestion on plasma choline levels and exercise performance. Ten endurance-trained male cyclists exercised on an electrically resisted ergometer for 105 minutes at a load equal to 70% V02 max, followed by an all-out, self-paced 15 minute performance ride

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11

Young, Ingrid Victoria. "The energy demands of a 2,000 meter race simulation for national level oarswomen." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28542.

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The purpose of this study was to assess the energy demands of a 2,000 meter race simulation (RS) for national level oarswomen; as evaluated on a rowing ergometer (RE). A Progressive Intensity Test (P.I.T.) was also performed on the RE to further evaluate the RS. Six national level oarswomen (X values: age= 24.5 yrs., ht= 179 cm, wt= 75 kg), all current national team candidates (1988), participated in this investigation. A 6 1/2 minute tape recorded water race was used to execute a 2,000 meter RS on a Dr. Gjessing Ergorow ergometer. The tape recording was an actual race tape that was respliced

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12

Douglass, Matthew D. "Age and muscle function : impact of aerobic exercise." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1391476.

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The purpose of this investigation was to comprehensively examine the influence of progressive aerobic exercise training on whole muscle size and function in older women (65-80 yr). Three sedentary, healthy, females (66±1 yrs, 167±2 cm, 70±7 kg) performed 12 weeks of supervised progressive cycle training (42 training sessions 3-4 sessions/week up to 80% HRR). Subjects were tested before and after training for maximum aerobic capacity (VO2max), quadriceps cross sectional area (CSA), whole muscle specific tension, concentric 1-RM, maximum voluntary contraction (MVC), and concentric peak power (wa

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13

Kerr, Morag Graham. "Biochemical and physiological aspects of endurance exercise in the horse." Thesis, University of Glasgow, 1985. http://theses.gla.ac.uk/3993/.

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A number of biochemical and haematological changes are known to occur in horses involved in long distance riding competitions of 40- 160 km, particularly changes associated with disturbances in fluid/ electrolyte balance, catabolism of body fuel stores and alterations in the integrity of the muscle cell membrane. This study investigated these changes in more detail in 50 horses involved in competitive rides and in four horses undergoing two 80 km rides under controlled conditions. In addition, experiments were carried out on horses and ponies exposed to a hot, humid environment (41°C, 33°C wet

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14

Flynn, Michael Gerald. "Fat storage in athletes : the metabolic and hormonal responses to swimming and running exercise." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/516210.

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Despite similar rates of energy expenditure during training, competitive swimmers have been shown to store significantly greater amounts of body fat than competitive runners. In an attempt to explain these discrepancies, male collegiate swimmers (n=8) and runners (n=8) were monitored during 45 min of swimming and running, respectively (75% V02 max), and during two hours of recovery. In addition, a group of male competitive triathletes (n=6) were similarly monitored during and after both swimming and running exercise.Blood samples were obtained after 15 min rest prior to exercise and at 0, 15,

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15

Cacija, Gordana. "Expertise and training effects on co-ordination dynamics in a whole body rhythmical task." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2003. https://ro.ecu.edu.au/theses/1330.

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This research consists of two studies. The purpose was to investigate the effects of slow and fast music tempo on interjoint co-ordination variability in an aerobic stepping task. The 'step knee-up' task is a cyclical whole body movement performed on the step platform. The exercise consisted of a few repetitive cycles. A cycle was defined by eight counts, four counts for the left leg pattern and four for the right leg as follows: The first half of the cycle was counted: I. Step up with the left foot onto the 20-cm step platform, 2. Flex the right hip to bring the right knee up; 3. Step down to

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16

Linton, Darla K. "The comparative effects of a 12-week high impact aerobic dance and bench step training program on isokinetic strength, power, and endurance of the quadriceps." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06112009-063042/.

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17

Meiring, Joseph R. "The influence of rest-interval duration on the growth hormone response to resistance exercise." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1356252.

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The purpose of this study was to establish an exercise protocol that demonstrated a relationship between rest-interval duration and the exercise induced human growth hormone (hGH) response. Ten recreationally trained male subjects (23 ± 0.9 yrs) performed three leg extension trials on an Eagle — Cybex leg extension machine that consisted of 4 sets of 10 repetitions. The workload and volume was kept constant, but each trial had different rest-interval durations. Rest-interval durations between sets were at: 30 sec intervals (T-30), 60 sec intervals (T-60), or 120 sec intervals (T-120). Blood sa

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18

Houmard, Joseph A. "Rate of heat acclimation : effects of exercise intensity and duration." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/533882.

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19

Artale, Lisa M. "The effects of physical activity on aging : a longitudinal analysis." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1115727.

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The purpose of this study was to examine the participants of the Ball State University Retirees Fitness (BSURF) program in order to determine the role that habitual participation in an exercise program plays on the aging process. The participants of the BSURF program were divided into two groups: those that have been exercising for seven or more years (LT; n=14), and those that have been exercising for six years or less (ST; n=10). Subjects underwent testing on the following variables: BMI, body composition, resting heart rate and blood pressure, blood lipid profile, biceps muscular strength,

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20

McConaghy, Finola Frances. "Aspects of thermoregulation in the horse during exercise." Thesis, Department of Animal Health, 1996. http://hdl.handle.net/2123/13121.

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21

Howe, Cheryl A. "The effects of warm-up intensity on anaerobic performance and metabolic recovery in male children." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/917031.

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The purpose of this study was to examine the effects of warm-up intensity on anaerobic performance and recovery in children. Six male children (11.0 ± 0.6 yr) performed an IAT following a mild (85% of VAT), intense (115% of VAT), or no warm-up protocol. VAT was determined during a previously performed GXT. A catheter allowed for multiple blood samples drawn thoughout each trial. Performance indices, PP, MP, TW, and FI%, were not significantly different across trials. Blood analysis revealed significant interactions for recovery [LA] and [HC03-], although no significant interaction for pH value

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22

Tatum, JoLyn Inez. "The Relationship between Physical Activity and Sleep." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30518/.

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The current study aimed to examine the naturalistic relationship between physical activity and sleep by exploring frequency, type, and timing of exercise and their association with a variety of sleep variables (e.g., sleep onset latency, wake after sleep onset, sleep efficiency). Young adults (n = 1003) completed a variety of self-report questionnaires, including a week-long sleep diary and a survey of typical frequency, type, and timing of exercise completed in the past week. Increased frequency of physical activity was related to increased sleep efficiency (total sleep time/time in bed), dec

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23

Zachwieja, Jeffrey J. "Influence of carbohydrate feeding during exercise on muscle glycogen synthesis after exercise." Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/776705.

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24

Cranston, Tracy E. "The effect of exercise training on the severity and duration of an upper respiratory tract infection." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941357.

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Although upper respiratory tract infections (URTI) are the most frequent illness among humans, insufficient evidence exists to determine if exercise training during an URTI may prolong or intensify an URTI. The purpose of this investigation was to determine the effect of exercise training on the severity and duration of URTI symptoms. Following serological screening, those subjects who were rhinovirus 16 (RV 16) antibody-free completed a graded exercise test. Thirty-four individuals (ages 18-29 years) of moderate fitness (between 32 ml/kg"1/miri 1- 60 ml/kg 1/min"1) were randomly assigned to t

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25

Demchak, Timothy J. "The effects of upper respiratory illness on running mechanics during a VOb2s maximal treadmill test." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/917030.

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The purpose of this study was to determine the effects of an upper respiratory illness (URI) on running mechanics during a maximal VO2 exercise treadmill test. The specific measurements assessed were stride length (SL), stride frequency (SF), range of motion (ROM) of the hip, knee, and ankle, and the displacement of the center of mass (COM) during the stride cycle. Fifty-three subjects (female=25, male=28) between 18 and 30 years of age completed the study. The participants in the study were characteristically non-smokers, drank fewer than five alcoholic drinks per week, had no orthopedic prob

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26

Anderson, Beth Naomi. "The effects of an upper respiratory infection on resting pulmonary function and physiological responses during graded exercise in young adults." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/902472.

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Viral illnesses are the most common agents affecting humans. Due to their widespread affects, viruses may have a particular influence on exercise functional capacity. Therefore, the purpose of this study was to determine the impact of an Upper Respiratory Infection (URI) on exercise functional capacity, as measured by VO2max. In addition, submaximal exercise responses, changes in resting pulmonary function, the impact of select symptoms, and level of initial fitness on performance during an URI were also determined. Forty-five subjects (females=21, male=24) between 18 and 29 years of age parti

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27

Fielding, Roger A. "Pre-exercise carbohydrate feedings and muscle glycogen utilization during treadmill running in trained runners." Virtual Press, 1985. http://liblink.bsu.edu/uhtbin/catkey/438361.

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Six runners (V02 max=68.2 ± 3.4 ml/kg/min) were studied on three separate occasions during a 30 min treadmill run at 70% V02 max. On each occasion, the subjects ingested either 75g of glucose (trial G), fructose (trial F) or a sweetened placebo (trial C). No differences were observed between any of the trials for oxygen uptake, heart rate or perceived exertion. Serum glucose levels were elevated as a result of the glucose feeding (P<0.05) reaching peak levels at 30 min post-feeding. With the onset of exercise, glucose levels dropped to a low of 5.89 ± 0.99 mmol/l at 15 min of exercise in trial

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28

Davis, Jacqueline A. "The hypertensive response to repeated days of heat-exercise exposure." Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/562777.

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The physiological responses of hypertensive subjects to a single bout of exercise in a hot environment have been investigated. It was the purpose of this study to compare the effect of successive days of exercise in the heat on borderline hypertensive and normotensive individuals, with particular interest being paid to the positive relationship that exists between plasma volume and blood pressure. Eight hypertensive subjects (HT) and 8 normotensive controls (NT) performed a standardized work task, (walking for 60 minutes at 3.5 mph on a 5% grade), in dry heat, (40C, 257. RH), on 7 successive d

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29

Jucht, Kathy Rae. "The influence of age on excess post-exercise oxygen consumption." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/722441.

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Oxygen consumption remains elevated above resting values for a variable period of time after exercise. Exercise intensity and duration, food intake, laboratory conditions, metabolic measurements, gender and age are all major factors affecting the duration and magnitude of excess post-exercise oxygen consumption (EPOC). In the present study, the influence of age on EPOC was studied in men of various fitness levels. Various metabolic measurements were collected for three distinct age groups, 18-25, 35-45, and 55-67 at rest and during exercise at 60% of maximal oxygen consumption until 200 ± 10

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30

Martin, David E. "The effect of heat stress on excess post exercise oxygen consumption." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834623.

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While a great deal of research has been directed towards the phenomena of excess post exercise oxygen consumption (EPOC), the effect of thermal stress on EPOC is not well defined. To assess the effect of heat stress on EPOC, seven healthy, active subjects (4 female, 3 male; 23.9 ± 2.0 years of age) performed 4 trials: one control (quiet rest) and one exercise (45 minutes of cycling at 65% VO2max workload) trial in moderate (23° C, 50% humidity) and hot (35° C, 50% humidity) environments. Oxygen consumption (V02), heart rate (HR) and rectal temperature (RT) were assessed pre, during and post co

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31

Moreau, Kerrie L. "The effects of blood lactate concentration on perception of effort during exercise." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014847.

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Several studies have reported that rating of perceived exertion (RPE) covaries more with blood lactate concentration (BLC) than other measures of relative exercise intensity. If BLC is used as the intensity criterion, then RPE could be used as a valid tool for exercise prescription. However, few have shown the relationship between RPE and BLC across a variety of graded exercise tests (GXTs) and exercise training settings. The purpose of this study was to determine if differences exist in RPEs at matched BLC between two GXTs and steady state exercise in the field setting. Thirteen healthy males

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32

Kim, Junghoon. "The influence of force production and eccentric exercise on growth hormone." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1048386.

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The main purpose of this study was to investigate the relationship between human growth hormone (hGH) and two separate components of resistance exercise. Eight non-weight-trained subjects (23.33 ± 0.3 yrs) performed three force production trials (FPT), at different concentric workloads, and an 120% eccentric exercise trial (EET) on the Cybex 6000. Blood samples (3 mls) were taken pre- and post-exercise and analyzed for lactate, creatine kinase (CK) and hGH. Electromyographic (EMG) activity of the quadriceps muscle was recorded during each trial. The mean peak torque produced during the FPTs in

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33

Lyons, M. "The effects of prior moderate and intense exercise on sports-related performance." Thesis, Coventry University, 2011. http://curve.coventry.ac.uk/open/items/5cf904e2-2558-40b8-b13d-54c22d10e6e8/1.

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The main aim of this research was to develop a greater understanding of the effects of prior moderate and intense exercise on sports-related performance. The research developed through five related studies that examined the effects of exercise on key aspects of sports performance. Each study was conducted in appropriate field-based settings, using protocols that have relevance to the chosen sports and performance tasks that display ecological validity. Three intensities were examined across each of the five studies; rest, moderate and intense exercise. The preliminary study explored the effect

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34

Ainslie, Philip N. "The prolonged exercise of hill walking : physiological, metabolic and ergonomic aspects." Thesis, Liverpool John Moores University, 2002. http://researchonline.ljmu.ac.uk/4995/.

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35

Robergs, Robert A. "Muscle glycogenolysis during weight-resistance exercise." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/720314.

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Skeletal muscle glycogenolysis was investigated in eight subjects during both high (HI) (70% 1 RM) and low (LO) intensity (35% 1 RM) leg extension weight-resistance exercise. Total force application to the machine lever arm was determined and equated between trials via a strain gauge and computer interfaced system. After the sixth set, muscle glycogen degradation was similar in the HI and LO trials (46.9 ± 6.6 and 46.6 ± 6.0 mmol•kg-1 wet wt, respectively), with the LO trial characterized by almost double the repetitions (6.0 and 12.7 ± 1.1) and half the peak concentric torque per repetition (

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36

Vaile, Joanna. "Effect of hydrotherapy on recovery of muscle-damage and exercise-induced fatigue." University of Western Australia. School of Sport Science, Exercise and Health, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0221.

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Achieving adequate and appropriate recovery from exercise is essential in ensuring optimal performance during repeated bouts of exercise. The use of various recovery interventions has become popular in an attempt to enhance subsequent performance and accelerate post-exercise recovery. The application of various post-exercise hydrotherapy interventions has become increasingly popular, however, the majority of current recovery practices appear to be based largely on anecdotal evidence as opposed to rigorous scientific research or evidence based findings. Physiologically, various hydrotherapy pro

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Diotti, Kristin A. "Recovery metabolism following exercise above and below the anaerobic threshold." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1273263.

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This study determined the effects of exercising above (LATabove) and below(LATbelow) the lactate threshold, upon excess post-exercise oxygen consumption (EPOC) magnitude and duration among average fit females. Thirteen females underwent testing over a nine-day period (5 visits). Resting metabolic rate (RMR) was assessed over two days. A ramp cycle test determined peak V02 and LAT. Blood samples, ventilatory, and heart rate measurements were recorded during rest, exercise, and recovery. On separatedays, volunteers exercised 10% LATabove and LATbelow expending 300 kcals. Afterwards,heart rate, R

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Van, Stavel Rosemary. "Effects of exercise on stress : a meta-analysis." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30159.

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Physical exercise is frequently prescribed by clinicians and researchers as an effective stress reduction technique. There has been some research to support this assertion, however the research has been varied in its methodological rigor. The design problems, variations in exercise programs, and the use of a wide range of psychological measures have made results difficult to interpret. Additionally, the psychological benefits and underlying change processes have not been clearly delineated. The purpose of this study was to conduct a meta-analysis of the research in this area in an attempt to a

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Hogan, Kyla B. "The hemostatic responses to exercise in hot and cold temperatures." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1398717.

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Purpose: The impact of temperature on the coagulative response to exercise has not been well described. The purpose of this study was to assess the response of plasma thrombin-antithrombin (TAT) to exercise during exposure to both hot and cold temperatures, and to compare those responses to exercise under normal, temperate conditions. Methods: Fifteen healthy male subjects (25.3 + 4.3 years) volunteered to participate in this study. Subjects completed maximal cycle ergometer exercise tests in three different temperatures (20°C, 5° or 8° C, and 30°C) in an environmental chamber. All tests were

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Lombard, Wesley Ross. "The effects of booster breaks during a sedentary night shift on physiological, psychomotor, psycho-physiological, and cognitive performance over a 3 night shift habituation phase." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1005194.

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Despite extensive research into shift work, workers working under rotating shift conditions are still plagued by the effects of the desynchronisation resulting from working against their natural circadian rhythms. Additionally, modern industries are shifting towards tasks requiring greater cognitive demand with less manual labour incorporated into the tasks. Research into operator based tasks, and hence those of a sedentary cognitive base both during day and night shifts, has been focusing on the effectiveness of the standard rest/break schedule. Research indicating that the standard rest brea

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Liang, Qingning, and 梁青寧. "Fibroblast growth factor 21 as a novel stress-responsive hormone during starvation and physical exercise." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208608.

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FGF21 is a stress-inducible hormone predominantly secreted from the liver. FGF21 acts as a downstream target gene of hepatic transcription factor PPARα that plays an obligatory role in mediating metabolic adaptation responses to prolonged fasting. However, the physiological roles of FGF21 in regulating glucose homeostasis during adaptive starvation responses and its underlying mechanisms remain unknown. Furthermore, FGF21 is induced by both acute and chronic exercise training in both rodents and human. The physiological significances and the underlying mechanisms for exercise-induced FGF21 pro

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Saldanha, Paulo. "Physiological monitoring during the bicycle Race Across America (RAAM) : a case study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0033/MQ64188.pdf.

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Bolster, Douglas R. "The effects of precooling on thermoregulation during subsequent exercise in the heat." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1041903.

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The purpose of this study was to lower body core temperature prior to a simulated portion of a triathlon (swim-15min; bike-45min) and examine whether precooling could attenuate thermal strain and increase subjective exercise tolerance in the heat. Six endurance trained triathletes (mean ± SE, 28 ± 2 yr, 8.2 ± 1.7 % body fat) completed two randomly-assigned trials, one week apart. The precooling trial (PC) involved lowering body core temperature (-0.5°C) in water prior to swimming and cycling. The control trial (CON) was identical except no precooling was performed. Water temperature and enviro

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Duncan, Glen E. "Physiological and perceptual responses to graded treadmill and cycle exercise in male children." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/902482.

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The assessment of ventilatory threshold (Tvent) and maximal oxygen consumption (VO2max) are routine laboratory procedures, yet there are few studies that have directly compared these measurements during different modes of exercise in children. Therefore, the purpose of this study was to compare the physiological and perceptual responses at Tvent and V02max during treadmill and cycle ergometry in prepubertal male children. Ten subjects (M ± SD, 10.2 + 1.3 yrs.) performed a graded exercise test to maximal effort on a treadmill and a cycle ergometer. The order of testing was counterbalanced. The

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Brien, Donald Michael. "The effect of induced alkalosis and acidosis on blood lactate appearance and performance capacity during simulated rowing." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26756.

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In order to test the effect of artificially induced alkalosis and acidosis on the appearance of blood lactate and work production, six well-trained oarsmen (age= 23.8 ±2.5 wt = 82.0 ±7.5kg.) were tested on three separate occasions after ingestion of 0.3 gm/kg body wt. NH4C1 (acidosis) , NaHC03 (alkalosis) or a placebo (control). Blood was taken from a forearm vein immediately prior to exercise for determination of pH and bicarbonate (HC03). One hour following the ingestion period, subjects rowed on a stationary ergometer at a pre-determined sub-maximal rate for 4 minutes, then underwent an imm

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Porter, David A. "The effect of oral coenzyme Q10 on the exercise tolerance of middle-aged, untrained men." Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/776715.

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Olbright, Lucinda Griffith. "THE EFFECTS OF ACUTE AEROBIC STRESS ON PREPREGNANT WOMEN OF CHILDBEARING AGE." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275245.

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Esterhuyse, Aletta Maria. "The magnitude and duration of post exercise hypotension after land and water exercise." Thesis, Dissertations -- Sport science, 2009. http://hdl.handle.net/10019.1/1825.

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Thesis (M Sport Sc (Sport Science))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: It is well-known that acute and chronic aerobic and resistance exercise results in decreased blood pressure (BP) in hypertensive individuals. There is little evidence that water exercise has a similar effect on BP response. There is also no certainty regarding the magnitude and duration of post exercise hypotension (PEH) after either land or water-based exercise. Most studies were also performed under controlled laboratory conditions and very few characterised the PEH response under real life cond

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Hickey, Matthew Sean. "Hormonal and metabolic responses to opioid antagonism during dynamic exercise : influence of exercise intensity." Virtual Press, 1993. http://liblink.bsu.edu/uhtbin/catkey/862279.

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In an attempt to investigate the role of the endogenous opioid peptides in substrate utilization and hormonal responses to exercise, eight trained cyclists completed two exercise trials at each of two distinct intensity/duration combinations. Briefly, cyclists completed two trials at 70% VO2max for 90 minutes and two trials at 90% VO2max until exhaustion. Trials were conducted following the administration of the opiate antagonist naloxone (NAL) (0.1 mg-kg-1 bolus + 0.1 mg-kg-1-·hr-1) or volume matched saline (SAL). Serum glucose was maintained at significantly higher levels at 60 and 90 minut

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Wall, Bradley A. "Exercise as medicine : reversing treatment toxicities in prostate cancer patients." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/691.

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A common treatment for prostate cancer, which is the most common form of cancer after skin cancer in Australian males, is androgen deprivation therapy (ADT). However, ADT is associated with an array of adverse effects including reduced bone and lean mass, loss of muscle strength, negative change in lipid profile, and increased risk of cardiovascular disease (CVD) as well as diabetes, all of which can compromise physical function and quality of life. Physical exercise has been suggested as a key lifestyle intervention for this group of cancer patients as it has enormous potential to limit and e

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