Exercise Physiology Commons^™

Validating The Adidas Micoach For Estimating Pace, Distance, And Energy Expenditure During Outdoor Over-Ground Exercise Accelerometer, Justin P. Porta, Derek J. Acosta, Angelica N. Lehker, Sean T. Miller, Joe Tomaka, George A. King

International Journal of Exercise Science: Conference Proceedings

The Adidas miCoach was developed as a personal training system to estimate pace, distance and energy expenditure (EE) but has yet to be validated.

PURPOSE: To validate the Adidas miCoach for estimating pace (min/km), distance (km) and EE (kcal/min) during outdoor over-ground walking and running for two different sensor configurations.

METHODS: Six male and 8 female moderately endurance trained participants (mean ± SD age: 28.2 ± 8.5 y; height: 167.4 ± 7.8 cm; mass: 60.9 ± 11.1 kg; VO_2max: 54.4 ± 5.5 mL/kg/min) completed this validation study. The protocol consisted of walking at 53.6, 80.4, and 107.2 m/min …

Effects Of A Training Season Of Master Runners On Maximal And Sub-Maximal Prescription Parameters, Lucas Samuel Tessutti, Lúcio Muramatsu, Danilo Lopes Ferrucci, Charles Ricardo Lopes

International Journal of Exercise Science: Conference Proceedings

Maximal oxygen uptake (VO2max) is considered an important physiological parameter to determinate cardiorespiratory capacity and has been used to predict the performance in middle and long-distance running athletes. Also the ventilatory threshold speed (sVT) and respiratory compensation point speed (sRCP) are important tools to predict performance and for training prescription. The aim of the present study was to demonstrate the changes in sVO2max, sVT, sRCP and running performance during the 2008 training season. Seven master runners (50.4 ± 8.4 years), six men and one woman, with more than five years experience running training were selected. The training period was divided …

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

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 …

The Effects Of Two Different Fatigue Protocols On Lower Extremity Kinematics And Kinetics During An Unanticipated Running Stop-Jump, David L. Quammen

Human Movement Studies & 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*

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

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‡

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†

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

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 …