Download or read book The Effects of Pre and Mid exercise Polylactate Consumption on Blood Lactate Concentration and Anaerobic Performance During an Interval Cycling Test in Men and Women written by Masaru Okajima and published by . This book was released on 1999 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the effects of pre and mid-exercise polylactate supplementation on blood lactate concentration and anaerobic performance during an interval cycling test in sixteen, elite, endurance-trained, collegiate cyclists.

Download or read book The Effects of the Menstrual Cycle Phases on EPOC and Blood Lactate Recovery After Maximal Exercise in Regularly Exercising Eumenorrheic Females written by Heather M. Hawks and published by . This book was released on 2014 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of the different estrogen and progesterone concentrations during different menstrual cycle phases on recovery after exercise have been studied minimally, with contradicting results. Therefore, the purpose of this investigation was to study the effects of the menstrual cycle on EPOC and lactate concentration during recovery from maximal exercise in physically active women. Regularly exercising eumenorrheic women (n=4) participated in this study by completing two testing days: one during the mid-follicular phase, and the other during the mid-luteal phase. A three day meal plan consisting of 1.5 g protein·kg body mass -1 ·d-1 , 30% of total kcal from lipid, and remaining kcal from carbohydrate was followed before each of the test days. On each test day, blood draws for phase confirmation and a maximal oxygen consumption (VO2max ) test to volitional exhaustion were completed. At minutes 0, 3, 6, 10 and 20 of recovery, blood lactate concentration was measured and excess post-exercise oxygen consumption (EPOC) analyzed throughout. There was no statistical significance (p

Download or read book Blood Lactate Response to Exercise and Time Trial Performance Across a Training Season in Competitive Masters Level Cyclists written by Marja-Liisa Magnuson and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to examine the relationship between the blood lactate response during a laboratory exercise test and time trial (TT) performance on the road across a training season. Nine competitive master level male cyclists (44 ± 6.4 yrs) completed 18 weeks of structured training using power meters. Testing occurred at baseline (P0) and after each 6-week block of training. For each test week, subjects completed a maximal exercise test on a cycle ergometer in the laboratory and a 16.1 km TT on a road course. Heart rate, blood lactate, rating of perceived exertion, and oxygen consumption (VO2) were recorded at each 3-min stage during the exercise test. VO2 (52.0 ± 5.2 to 57.6 ± 6.9 ml·kg·min−1) and peak power (319.2 ± 39.5 to 352.8 ± 49.1 watts) increased (p=

Download or read book The Effects of Active and Passive Recovery on Blood Lactate Concentration and Exercise Performance in Cycling Tests written by Shin-Shan Lu and published by . This book was released on 1991 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of this study was to examine the effects of recovery modes and exercise durations on blood lactate concentrations and subsequent performance in cycling tests. Fourteen male subjects completed six randomly assigned experimental protocols with a combination of three durations and two modes of recovery (passive and active cycling at 45% VO$ sb{ rm 2 max}$). Each protocol consisted of eight bouts of cycling at 120% of VO$ sb{ rm 2 max}$ interspersed with five minute recovery periods. Each protocol terminated with a maximal performance task consisting of a 45s all-out cycling test. Results indicated significantly (p $

Download or read book Effects of Menstrual Cycle Phase on Exercise Performance in Female Collegiate Student athletes written by Jennifer Lynne Bossi and published by . This book was released on 2012 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are several different physiological differences between males and females that can affect exercise performance. Particularly, women experience the menstrual cycle when variations of estrogen and progesterone occur every 23-38 days. This fluctuation of hormones can have many physiological effects on the body. While estrogen helps decrease cholesterol levels, increase fat metabolism, and promote bone health, progesterone acts by increasing ventilatory drive. Oral contraceptive pills regulate the hormone fluctuations of the menstrual cycle and provide a more physiological stable environment for users. Although women play and compete at all phases of their menstrual cycle, the specific phase may have an impact on their sports performance. This study was designed to determine the effects of menstrual cycle phase and oral contraceptive use on aerobic and anaerobic exercise performance. Subjects were 7 female varsity student-athletes at Central Connecticut State University who were currently taking a 28 day cycle oral contraceptive pill. They completed a VO2 max treadmill test and anaerobic bike test at the follicular phase and luteal phase of one menstrual cycle. The follicular phase was defined as when the subject was taking her inactive birth control pill and the luteal phase was defined as when she was taking her active pill. Results found that there was no difference in VO2 max, final heart rate, RER, or blood lactate accumulation between phases during the aerobic running to exhaustion test. There was also no difference in peak power, work, mean power, and fatigue index between phases during an anaerobic bike test. However, there was a difference in final blood lactate accumulations in anaerobic exercise, with values being higher during the follicular phase. It is suggested there was no change in exercise performance because highly trained athletes have already adapted to the physiological changes caused by the fluctuations of hormones. Any perceived differences in performance could be due to psychological factors of performing when menstruating. More research should be done explaining the effects of the menstrual cycle and oral contraceptives on exercise performance, specifically with highly trained athletes.

Download or read book Changes in Blood Lactate Concentration During Active Recovery at Sub Lactate Threshold Lactate Threshold and Supra Lactate Threshold Exercise Intensities written by Sylvia J. Weihrer and published by . This book was released on 1991 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Pre exercise Glycerol Consumption on Hydration and Performance During a Cycling Test to Exhaustion in Men and Women written by Derek W. Marks and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigated effects of pre-exercise glycerol administration on hydration, thermoregulation and exercise performance.

Download or read book Effects of Calcium Lactate and Magnesium Lactate Supplementation on VO2peak and the Onset of Blood Lactate Accumulation written by Aaron Earl Russ and published by . This book was released on 2016 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ergogenic aids are any substance that can improve performance. The use of nutritional ergogenic aids is widespread. Lactate supplementation is a form of potential ergogenic aid that might improve acid based balance during exercise to improve physical performance. This study was designed to determine the effects that calcium, magnesium lactate supplementation has on aerobic performance quantified in VO2peak, and acid based regulation quantified using onset blood lactate accumulation (OBLA). Participants in this study were male and females (n=18) aged 18-37 recruited from a universities campus. Participants were randomly assigned to either a supplement group or a placebo group. The participants acted as their own control. Two days of testing were conducted: a pretest and a treatment test. A modified Bruce protocol graded exercise test was conducted on a cycle ergometer. The supplement containing calcium and magnesium lactate was compared to a placebo, pre to post changes to evaluate performance changes. During exercise blood lactate values, oxygen consumption, rating of perceived exertion and heart rate were measured during the last thirty seconds of each stage. Oxygen consumption was measured using a standard VO2peak test using a metabolic cart. OBLA was determined from blood lactate samples analyzed using a blood lactate analyzer during exercise testing. VO2peak, OBlA power, time to exhaustion, heart rate at OBLA, percent heart rate max at OBLA, OBLA at VO2, percent VO2 at OBLA and RPE at OBLA where all compared pre to post to determine changes. Data analysis was conducted using a mixed repeated measures analysis of variance (ANOVA) in SPSS software. No statistical significant differences were observed pre to post lactate supplementation. The placebo did improve VO2peak post treatment (p=0.013), all other comparisons were non-significant. The findings of the current study show that lactate supplementation does not improve direct performance indicators quantified in VO2peak and OBLA. This study’s findings are consistent with previous research conducted. In conclusion, athletes should explore the use of other proven methods/ergogenic aids to extend the limits of sports performance.

Download or read book Effects of Recovery Patterns and Blood Lactate Levels on Achievement of Peak Power and Subsequent Anaerobic Performance of Males written by Edna Kathleen Foster and published by . This book was released on 1985 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Blood Lactate Concentration on Maximal Constant Load Exercise Performance in Man written by John David Regan and published by . This book was released on 1980 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Ingesting Polylactate During Prolonged Cycling written by James David Larsen and published by . This book was released on 1989 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Pre Exercise Feeding on Endurance Performance written by Carrie Lynn Petteys and published by . This book was released on 2002 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glycogen depletion can have a deleterious effect on endurance performance. The use of carbohydrates ingested either before exercise or during has been a topic of numerous studies. However previous studies have been seriously limited by the use of non-athletically representative outcome measures. This study was designed to test whether or not ingesting a carbohydrate solution 30 min prior to endurance exercise would have an effect on endurance performance. Ten well-trained cyclists performed three 40 km time trials (one for habituation purposes), using a control and a carbohydrate solution (35 grams). Time to completion, power output, velocity, blood lactate, blood glucose (BG), HR, and RPE were measured during the ride. There were no significant differences, except for a significant drop in BG at the beginning of the ride. Based on these results, the use of carbohydrates before endurance exercise does not hinder endurance performance.

Download or read book The Effects of Polylactate on Recovery from Maximal Exercise in Trained Cyclists written by William Jay Ripke and published by . This book was released on 1990 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Endurance Training on Lactate Clearance from the Blood After Induced Lactacidemia written by Carolyn Ann Aarts and published by . This book was released on 1987 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Power Output and Lactate Concentration Following Repeated 10 S Intervals Using Varying Recovery Patterns microform written by Wendy F. (Wendy Francesca) Mancini and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1992 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Blood lactate concentration and mean power output were examined over a series of maximal intermittent exercise bouts with varying recovery patterns. Thirteen elite male cyclists completed four randomly assigned experimental conditions. Each exercise/recovery condition consisted of twelve 10 s maximal exercise bouts on a Monark cycle ergometer. Four different recovery patterns (30, 60, 90 and 120 s) followed the repeated 10 s all-out efforts. Results revealed that the mean power output averaged over the 12 trials was 12.7, 13.0, 13.2 and 13.4 W/kg, for the 30, 60, 90 and 120 s conditions, respectively. Blood lactate concentration during exercise were 9.9, 9.2, 6.5 and 6.0 mmol/1, for the 30, 60, 90 and 120 s conditions, respectively. The 30 and 60 s conditions yielded significantly lower mean power output values compared to the 90 and 120 s conditions. Following the repeated maximal 10 s efforts, blood lactate concentration was significantly greater in the 30 and 60 s recovery conditions compared to the 90 and 120 s conditions." --

Download or read book Effects of 28 Days of Beta alanine and Creatine Monohydrate Supplementation on Muscle Carnosine Body Composition and Exercise Performance in Recreationally Active Females written by Julie Yong Kresta and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Early research with beta-alanine (beta-ALA) supplementation has shown increases in muscle carnosine as well as improvements in body composition, exercise performance and blood lactate levels. Creatine monohydrate supplementation has been extensively researched for its effects on anaerobic exercise performance. Recently, a new line of studies have examined the combined effects beta-ALA and creatine supplementation on anaerobic exercise performance and lactate threshold. The purpose of the present study is to examine the acute and chronic effects of beta-ALA supplementation with and without creatine monohydrate on body composition, aerobic and anaerobic exercise performance, and muscle carnosine and phosphagen levels in college-aged recreationally active females. Thirty-two females were randomized in a double-blind placebo controlled manner into one of four supplementation groups including beta-ALA only, creatine only, beta-ALA and creatine combined and placebo. Participants supplemented for four weeks and reported for testing at baseline, day 7 and day 28. Testing sessions consisted of a resting muscle biopsy of the vastus lateralis, body composition measurements, a graded exercise test on the cycle ergometer for VO2max and lactate threshold, and multiple Wingate tests for anaerobic exercise performance. Results showed all supplementation strategies increasing muscle carnosine levels over placebo after four weeks, but not between groups. Muscle creatine increased for all groups after four weeks, but not between groups. There were improvements for all groups with body composition after four weeks, despite the present study not including a specific training protocol. There were no group differences observed for aerobic exercise, blood lactate levels, lactate threshold, ventilatory threshold, peak power, mean power, total work or rate of fatigue. There were some trends for anaerobic exercise indicating groups supplementing with creatine may have greater improvements, however, these findings were not statistically significant. The present study failed to show any additive effects of beta-ALA and creatine supplementation for body composition, aerobic exercise, lactate threshold or anaerobic exercise measures. This could be due to the small sample size resulting in low power and effect sizes. Previous research has demonstrated that four weeks of beta-ALA and creatine supplementation was enough time to increase muscle carnosine and phosphagen levels. However, perhaps more time is needed for performance adaptations to occur, especially without the addition of an exercise training component.

Download or read book PRE EXERCISE CARBOHYDRATE SUPPLEMENTATION EFFECTS ON INTERMITTENT CRITICAL VELOCITY ANAEROBIC RUNNING CAPACITY AND CRITICAL REST INTERVALS written by Adam Bialecki and published by . This book was released on 2017 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Carbohydrates play an important role in human performance. Pre-exercise carbohydrates may have an ergogenic effect in intermitted-based exercise. Objectives: The objectives of the study were to 1) determine if pre-exercise carbohydrate supplementation improves the number of bouts completed by the participants, 2) examine the effects of pre-exercise carbohydrate supplementation on intermittent critical velocity (ICV), 3) examine if pre-exercise carbohydrate supplementation increases anaerobic running capacity (ARC), and 4) determine if pre-exercise carbohydrates improve critical rest intervals (CRI). Methods: Participants (n=13) completed an initial assessment of a graded exercise test (GXT) to measure peak velocity. This velocity was then used to determine velocities for the ICV test protocol. In the ICV test protocol, participants sprint at an equal work-to-rest ratio of 15 seconds at intensities of 130%, 110%, and 120% of their peak velocity until failure. A 15-minute rest period separated each intensity. Each participant completed the protocol twice, while consuming carbohydrates prior to one of the trials. Blood glucose, blood lactate, perceived recovery status (PRS), and session-ratings of perceived exertion (S-RPE) were measured and recorded periodically during testing. Results: Using repeated measures analysis of variance, differences between the baseline and intervention trials regarding ICV, ARC, and CRI were not statistically significant (p=0.823, p=0.653, p=0.778, respectively). However, increases were seen between total distance, time to exhaustion, and number of bouts completed. Discussion: Increases seen in base measures (distance, time, bouts) are indicative of the ergogenic of pre-exercise carbohydrate supplementation.