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Articles 31 - 39 of 39
Full-Text Articles in Physiology
Laboratory Tests Ability To Predict Aerobic Performance In Army Athletes, Paulo Eduardo Redkva, Raphael Cailleaux, Vanessa Holtz Franco, Cristina Dos Santos
Laboratory Tests Ability To Predict Aerobic Performance In Army Athletes, Paulo Eduardo Redkva, Raphael Cailleaux, Vanessa Holtz Franco, Cristina Dos Santos
International Journal of Exercise Science: Conference Proceedings
Although VO2max is the index which represents maximum aerobic power, the corresponding exercise velocity (vVO2max) can be different in athletes with the same VO2max values. This study investigated associations between absolute (VO2pabs), relative (VO2pre) VO2peak, and vVO2max for aerobic performances determined in the field. Thirteen runners, aged 20.1±2.1 years, height 170±0.1 cm, and weight 66.0±3.7 kg participated from the 13th Armoured Infantry Battalion (Brazilian Army) based in Ponta Grossa, PR, Brazil. Participants were submitted to an exhaustive progressive test in a treadmill with 12km.h-1 initial velocity, 3min stages, and 1 km.h-1 increments. Breath-by-breath gas samples were collected (Parvomedics – TrueOne, …
Comparative Analysis Of The Energy Expenditure In Walking And The Running In Young Men, Lucas De Castro Cardoso, Marcelo De Castro Cesar, Pamela Roberta Gomes Gonelli, Claudio Alexandre Gobatto
Comparative Analysis Of The Energy Expenditure In Walking And The Running In Young Men, Lucas De Castro Cardoso, Marcelo De Castro Cesar, Pamela Roberta Gomes Gonelli, Claudio Alexandre Gobatto
International Journal of Exercise Science: Conference Proceedings
Walking below 6 km/h and running above 8 km/h are efficient effort intensities to maintain the economy of energy expenditure in the mechanical work. However, in the intermediate range (between the transition of the walking to running), the mechanical work against the energy expenditure still requires analysis. So, the purpose of the present study was to compare the energy expenditure between walking and running in the load work immediately below of the inversion point in the caloric expenditure. Ten young male subjects participated of the study (24.2 ± 2.04 years; 180.7 ± 3.8 cm; 79.5 ± 8.6 kg). The transition …
Why Is There Still So Much Confusion About Vo2 Plateau? A Re-Examination Of The Work Of A.V. Hill, Richard Vincent Castle
Why Is There Still So Much Confusion About Vo2 Plateau? A Re-Examination Of The Work Of A.V. Hill, Richard Vincent Castle
Masters Theses
Maximal oxygen uptake (VO2max) is regarded as the gold standard for assessing aerobic fitness. In 1923, Hill et al. proposed that VO2max represents the maximal ability of the body to take in and consume O2 during strenuous exercise. Recently, however, controversy has arisen over the issue of whether a leveling off, or "plateau" in VO2 is necessary to verify attainment of VO2max. Purpose: To compare two different VO2max protocols and determine if both protocols show direct evidence of an upper limit on VO2. Methods: Nine runners (18-35 years old) completed …
The Effects Of Two Different Fatigue Protocols On Lower Extremity Kinematics And Kinetics During An Unanticipated Running Stop-Jump, David L. Quammen
The Effects Of Two Different Fatigue Protocols On Lower Extremity Kinematics And Kinetics During An Unanticipated Running Stop-Jump, David L. Quammen
Human Movement Sciences & Special Education Theses & Dissertations
Altered neuromuscular control strategies and biomechanical movement risk factors are most likely to contribute to the increased incidence of non-contact ACL injury for female athletes. Neuromuscular control strategies and movement patterns are further altered when the effects of fatigue are present. The purpose of this study was to determine neuromechanical differences between two fatigue protocols [Slow Linear Oxidative Fatigue Protocol (SLO-FP) and Functional Agility Short-Term Fatigue Protocol (FASTFP)] when performing a running stop-jump task (RS). A sample of convenience of fifteen Division I female soccer players (age= 19.2 ± 0.8 years; height= 1.67 ± 0.05 m; mass= 61.7 ± 8.1 …
The Effects Of Tempur Insoles On Ground Reaction Forces And Loading Rates In Running, Crystal Ruano*, Douglas Powell‡, Elizabeth T. Chalambaga*, Doug Renshaw*
The Effects Of Tempur Insoles On Ground Reaction Forces And Loading Rates In Running, Crystal Ruano*, Douglas Powell‡, Elizabeth T. Chalambaga*, Doug Renshaw*
International Journal of Exercise Science
Runners often experience over-use injuries. Ground reaction force (GRFs) patterns have been associated with these over-use injuries; however, it is not solely the magnitude of GRFs, but also the rate at which they are applied that lead to lower extremity injury. Many recreational runners will use over-the-counter insoles as a method of treating or preventing injury. Therefore, the purpose of this study was to examine the efficacy of two insoles on peak GRFs and loading rates. It was hypothesized that no differences in peak GRFs or loading rates would exist with the addition of two insoles during running. Twelve subjects …
The Effects Of Insoles On Loading Rate In Level Running, Crystal Ruano, Douglas Powell, Doug Renshaw, Elizabeth Chalambaga, Matthew Bice
The Effects Of Insoles On Loading Rate In Level Running, Crystal Ruano, Douglas Powell, Doug Renshaw, Elizabeth Chalambaga, Matthew Bice
International Journal of Exercise Science: Conference Proceedings
Introduction: Running is one of the most popular recreational sports in America with over 250 million regular runners. Recreational and competitive runners often experience over-use injuries including plantar fasciitis, Achilles tendinitis and stress fractures. Previous research has shown that the transmission of ground reaction force through the lower extremity leads to these over-use injuries; however, it is not solely the magnitude of vertical ground reaction forces, but also the rate at which these forces are applied that may lead to lower extremity injury. Many recreational runners will use over-the-counter insoles as a method of treating an injury or as a …
Impact Of Seated And Standing Bicycle Riding Position On Subsequent Running Performance, Randall L. Jensen‡, Brendon J. Ewers†, Brian Cunniffe*, Brian Phelan*, Andrew J. Harrison‡, Amir Shafat‡
Impact Of Seated And Standing Bicycle Riding Position On Subsequent Running Performance, Randall L. Jensen‡, Brendon J. Ewers†, Brian Cunniffe*, Brian Phelan*, Andrew J. Harrison‡, Amir Shafat‡
International Journal of Exercise Science
This study examined the effects of cycling posture on subsequent running performance similar to the transition phase of a triathlon. Experienced, non-elite triathletes completed two trials of a cycle-run transition. During the last three minutes of a 30 minute cycling bout, at power output equal to lactate threshold, subjects either remained seated (SEAT), or alternated seated and standing cycling (30 s at a time; ALT). Heart rate, RPE, minimum and maximum knee angle, stride frequency and length, and onset and duration of quadriceps and hamstrings activity were obtained at the end of a three-minute control run and at minutes 0, …
Swim Positioning And Its Influence On Triathlon Outcome, Grant J. Landers†, Brian A. Blanksby‡, Timothy R. Ackland‡, Ronald Monson†
Swim Positioning And Its Influence On Triathlon Outcome, Grant J. Landers†, Brian A. Blanksby‡, Timothy R. Ackland‡, Ronald Monson†
International Journal of Exercise Science
Questions have been raised regarding which of the three legs of a triathlon influences the final finishing position. Some coaches subjectively believe that the swim and run are more important than the cycle, especially since the introduction of drafting during the cycle. This study analysed race position shifts between each of the three disciplines to assess the importance of the swim finish position and final finish position during draft legal Olympic distance triathlon events. Ten male and 10 female triathlon world cup events during one season were analysed. The results suggested that the triathlon swim leg is important because the …
Derivation Of An Age And Weight Handicap For The 5k Run, Paul M. Vanderburgh, Lloyd L. Laubach
Derivation Of An Age And Weight Handicap For The 5k Run, Paul M. Vanderburgh, Lloyd L. Laubach
Health and Sport Science Faculty Publications
The adverse effect of increasing age and/or body weight on distance run performance has been well documented. Accordingly, nearly all five kilometer (5K) road races employ age categories and, sometimes, a heavier body weight classification. Problems with such conventions include small numbers of runners within older age categories and the advantage given to the lightest runners within each weight category. We developed a 5K Handicap (5KH), a model that calculates an adjusted run time based on the inputs of actual 5K run time, age, and body weight for men and women. This adjusted time, then, can be compared between runners …