Research Day - Fall 2016 - DO NOT EDIT
http://hdl.handle.net/10106/26519
2024-03-28T16:25:01ZThe Relationship Between RPE and Blood Lactate Concentrations During a VO2Max Test On a Cycle Ergometer
http://hdl.handle.net/10106/26622
The Relationship Between RPE and Blood Lactate Concentrations During a VO2Max Test On a Cycle Ergometer
Torres, Edith; Nguyen, James
INTRODUCTION: Lactate (La) is produced by the body’s muscles in response to exercise through anaerobic glycolysis. During exercise, most of the lactate produced enters the heart and slow twitch muscle fibers by traveling within the blood throughout the body. The lactate diffused into the blood is referred to asblood lactate. Blood lactate (BLa) is used as a measurement of exercise intensity since there is a strong relationship between the two. With increasing blood lactate and intensity there is also an increase in exertion. This exertion during exercise is measured through the rate of perceived exertion scale (RPE). The Borg RPE scale in particular is a range between 6-20 with it ranging from very, very light to very, very hard. During exertion the heart starts to increase it’s beating in order to distribute blood throughout the body to meet the demands of stress placed upon it. Heart rate (HR) is based off the number of contractions of the ventricles within a unit of time. In addition, Maximal Oxygen consumption (VO2Max) is another factor that increases with the previous variables mentioned. Maximal oxygen consumption is the maximal rate of oxygen consumed during incremental exercise and reflects the aerobic fitness level of an individual.
PURPOSE: The purpose of this study was to determine the relationship between RPE and blood lactate concentrations during a maximal test on a cycle ergometer.
METHODS: Two female (W; age 23.5 ±2.12 yrs.) and seven male (M; age 22.9 ±1.77 yrs.) UTA students participated in this study. Each subject was tested to maximal demands on a cycle ergometer along with a metabolic cart in order to measure VO2max. During the maximal staged test the workload increased for both males and females. A Lactate Plus Meter measured the blood lactate produced by each individual though finger pricking during resting, every third minute throughout the test and after cool down. Blood lactate (BLa), RPE, heart rate (HR), and maximal oxygen consumption (VO2Max) were all recorded and used for this study.
RESULTS: The average and standard deviation at each stage for all subjects are as followed. HR (beats∙min -1);BLa (mmol∙L-1);VO2 (ml∙kg-1∙min-1). Stage 1: HR 112 ±9.54, bLa 5.01 ±3.61, RPE 6.44 ±0.53, VO2 7.86 ±3.96, r20.29. Stage 2: HR 117 ±12.01, bLa 4.21 ±2.14, RPE 7 ±1.12, VO212.9 ±3.15, r2: -.024. Stage 3: HR 135 ±15.69, bLa 6.34 ±4.34, RPE 10.1 ±2.85, VO216.59 ±3.27, r2:-0.49. Stage 4: HR 138 ±53.79, bLa 8.76 ±4.21, RPE 12.67 ±3.04, VO220.96 ±4.66, r2:0.11. Stage 5: HR 171 ±26.89, bLa 12.09 ±5.96, RPE 15.38 ±3.25, VO228.44 ±5.02 r2:0.53. Stage 6: HR 168 ±24.28, bLa 8.38 ±2.96, RPE 16.25 ±2.99, VO229.63 ±5.0, r2:0.77. Stage 7: HR 169 ±22.52, bLa 10.07 ±4.14, RPE 17.67 ±1.15, VO233.3 ±2.96, r2:0.93. Stage 8: HR 176 ±7.78, bLa 9.6 ±0.28, RPE 18.5 ±0.71, VO235.55 ±1.2, r2:-1. With each progressing stage, the relationship between RPE and bLa increased.
CONCLUSION: The results of this study suggest that there is a relationship between RPE and blood lactate. As RPE increases with each stage, the relationship between RPE and blood lactate increases.
KINE 4400
2016-01-01T00:00:00ZThe Effects of Body Weight Assistance On Maximal Aerobic Capacity In College Age Women
http://hdl.handle.net/10106/26621
The Effects of Body Weight Assistance On Maximal Aerobic Capacity In College Age Women
Rojas, Sabino; Tosaw, Max
Maximal oxygen consumption, or VO2max is the maximal capacity for the body to deliver and utilize oxygen during an intense exercise. VO2max can be expressed as an absolute value in liters of oxygen per minute (L/min) or in a relative value as milliliters of oxygen per kilogram of body weight per minute (ml/kg/min). Body weight assistance (BWA) is often used within the rehabilitation setting as a reliable resource to provide patients the ability to perform a walking motion at a reduced body weight. The AlterG Anti-Gravity Treadmill utilizes the Differential Air Pressure technology to alleviate the individual’s weight. Research has shown that BWA in the form of gait harness and water immersion reduces the metabolic work of the patient while the AlterG yields varying results.
KINE 4400
2016-01-01T00:00:00ZThe Effects of Rhodiola Rosea On Submaximal Exercise
http://hdl.handle.net/10106/26618
The Effects of Rhodiola Rosea On Submaximal Exercise
Ayala, Diana; Riofrio, Brenda
Introduction: Rhodiola Rosea is a traditional medical herb that grows in mountainous regions. It has been used to enhance mental and physical performance and treat psychological stress and fatigue. Some research studies have shown that Rhodiola Rosea has anti-inflammatory properties and t it has also been shown to improve aerobic endurance.
KINE 4400
2016-01-01T00:00:00ZTHE EFFECTS OF CAFFEINE ON MAXIMAL EXERCISE
http://hdl.handle.net/10106/26617
THE EFFECTS OF CAFFEINE ON MAXIMAL EXERCISE
Rey, Amber D.; Romero, Brenda
Caffeine is classified as an ergogenic and central nervous system stimulant. Research shows that there are benefits of consuming caffeine. These include increased mental alertness, decreased fatigue and increased delay to the onset of fatigue, decreased reaction time and increased use of muscle triglycerides.
Research has also shown that ingesting caffeine prior to exercise significantly elevates plasma levels of free fatty acids (FFA) and glycerol. It is known that the accumulation of FFA reduces the rate of glycolysis via the inhibition of phosphofructokinase. Therefore, ingestion of caffeine is expected to alter carbohydrate metabolism and the rate of lactate production.
KINE 4400
2016-01-01T00:00:00Z