Achievement of Peak During a 90-s Maximal Intensity Cycle Sprint in Adolescents

2005 ◽  
Vol 30 (2) ◽  
pp. 157-171 ◽  
Author(s):  
Craig A. Williams ◽  
Sébastien Ratel ◽  
Neil Armstrong
Keyword(s):  
Oxygen Uptake ◽  
Power Output ◽  
Aerobic Power ◽  
Recovery Period ◽  
Peak Oxygen Uptake ◽  
Mechanical Power ◽  
Maximal Intensity ◽  
Ramp Test ◽  
S Peak ◽  
One Way Anova

The aim of this study was to determine whether peak oxygen uptake [Formula: see text] attained in a 90-s maximal intensity cycle sprint is comparable to that from a conventional ramp test. Sixteen participants (13 boys and 3 girls, 14.6 ± 0.4 yr) volunteered for the study. On Day 1 they completed a [Formula: see text] test to exhaustion using a 25 W∙min−1 ramp protocol beginning at 50 W. Peak [Formula: see text] was defined as the highest [Formula: see text] value achieved, and aerobic power [Formula: see text] as the power output of the final 30 s. On Day 2 the participants completed two 90-s maximal sprints (S1 and S2). A 45-min recovery period separated each sprint. Mean oxygen uptake over the last 10 s of each sprint was determined as [Formula: see text] and minimum power (MinP-30 s) as the mechanical power attained in the final 30 s. A one-way ANOVA was used to analyse differences between S1, S2, and the ramp test for [Formula: see text] and MinP-30 s. Peak [Formula: see text] was not significantly different between the ramp, S1, or S2 (2.64 ± 0.5, 2.49 ± 0.5, and 2.53 ± 0.5 L∙min−1, respectively, p > 0.68). The S1 and S2 [Formula: see text] scores represented 91 ± 10% and 92 ± 10% of the ramp aerobic test. The MinP-30 s for S1 and S2 were significantly lower than the [Formula: see text] of the ramp test, p < 0.05. Hence, for researchers solely interested in [Formula: see text] values, a shorter but more intensive protocol provides an alternative method to the traditional ramp aerobic test. Key words: aerobic, anaerobic, mechanical power, pedaling

scholarly journals PPeak oxygen uptake differentiates competitive from recreational male surfboard riders

Motricidade ◽  
2018 ◽  
Vol 13 (4) ◽  
pp. 39
Author(s):  
Nuno Almeida ◽  
Joana Reis ◽  
João Beckert ◽  
Miguel Moreira ◽  
Francisco Alves
Keyword(s):  
Oxygen Uptake ◽  
Body Mass ◽  
Power Output ◽  
Aerobic Power ◽  
Ventilatory Threshold ◽  
Peak Oxygen Uptake ◽  
Maximal Aerobic Power ◽  
Compensation Point ◽  
Respiratory Compensation Point ◽  
Respiratory Compensation

The purpose of this study was to verify if competitive performance status was associated to different levels of specific aerobic fitness in Portuguese surfboard riders. Six recreational surfers (age: 32.3±3.1 years; body mass: 73.2±7.8kg; height: 1.75±0.05m) and six competitive international level surfers (age: 25±8.4years; body mass: 68.5±3.8kg; height: 1.74±0.05m) performed a maximal continuous incremental paddling test consisting of two-minute steps starting at 20W, with increments of 10W, for determination of peak oxygen uptake and maximal aerobic power. Ventilatory threshold and respiratory compensation point with corresponding heart rate and power output were also determined. Elite surfers presented higher values for peak oxygen uptake (43.6±7.9 ml.kg-1.min-1) than recreational surfers (31.1±7.4 ml.kg-1.min-1, p=0.01) however, there were no differences (p> 0.05) between groups for maximal aerobic power (elite: 76.6±18.6W; recreational: 76.6±16.6W). No significant differences between the power output at which ventilatory threshold or respiratory compensation point occurred but elite surfers reached ventilation threshold with 22.5±5.8 ml.kg-1.min-1 which was significantly higher than recreational surfers (16±3.7 ml.kg-1.min-1). These findings show that elite surfers have higher values of peak oxygen uptake than recreational surfers which suggest a higher aerobic adaptation that may be related to the different amount of exercise volume undertaken.

scholarly journals Aerobic Power in Prepubescent Children with Different Levels of Physical Activity (Potencia Aeróbica en Niños Prepubescentes con Diferentes Niveles de Actividad Física)

Retos ◽  
2015 ◽  
pp. 203-205
Author(s):  
Luis Paulo Gomes Mascarenhas ◽  
Marcos Tadeu Grzelczak ◽  
William Cordeiro de Souza ◽  
Antonio Stabelini Neto ◽  
Yamileth Chacón-Araya ◽  
...  
Keyword(s):  
Physical Activity ◽  
Oxygen Uptake ◽  
Physical Activity Level ◽  
Aerobic Power ◽  
Peak Oxygen Uptake ◽  
Activity Level ◽  
Similar Amount ◽  
Physiological Indicators ◽  
Post Hoc ◽  
Activity Diary

The purpose of the study was to compare the aerobic power of prepubescent children (Tanner 1 stage). Participants were 95 children between 7 and 9 years old, divided into 4 physical activity level groups: a) Trained (n = 24), b) Sport beginners (n = 23), c) Active (n = 24), and d) Sedentary (n = 24). Physical activity level was determined by a three-day physical activity diary. Subjects performed a treadmill Balk protocol to obtain their peak oxygen uptake. Comparisons were made using ANOVA two-way and post hoc Tukey followed-up the significant differences for p< 0,05. Trained, sport beginners and active children presented similar amount of physical activity level, but they significantly differ from the sedentary children (p< 0.05). Overall boys (50.67 ± 8.52 ml/kg/min) had higher relative peak oxygen uptake than girls (45.19 ± 6.44 ml/kg/min). The gender by group interaction showed that this difference is explained by the superior values of the trained boys (58.80 ± 8.98 ml/kg/min) when compared to trained girls (47.51 ± 5.68 ml/kg/min), even though they presented the same amount of physical activity level. The trained group (53.16 ± 9.34 ml/kg/min) showed higher relative peak oxygen uptake compared to sport beginners (48.90 ± 6.54 ml/kg/min), active children (45.46 ± 7.50 ml/kg/min) and sedentary children (44.63 ± 9.52 ml/kg/min). The results suggest that prepubescent children that participate in systematized trained programs have better physiological indicators for aerobic fitness.Key words. aerobic power, physical activity, children.Resumen. El propósito del estudio fue comparar la potencia aeróbica de niños prepubescentes (Estadio de Tanner 1). Participaron 95 niños y niñas con edades entre 7 y 9 años, divididos en 4 grupos basados en sus niveles de actividad física: a) Entrenados (n = 24), b) Principiantes en deportes (n = 23), c) Activos (n = 24), y d) Sedentarios (n = 24). Los niveles de actividad física se determinaron por medio de un diario de actividad física de tres días. Los participantes realizaron el protocolo de Balke en banda sin fin para obtener el consumo de oxígeno pico. Se hicieron comparaciones con ANOVA de dos vías y post hoc de Tukey cuando se encontraron diferencias significativas a un p < 0.05. Los niños prepubescentes entrenados, principiantes en deportes y activos presentaron niveles de actividad física similares, pero fueron significativamente diferentes de los niños sedentarios (p < 0.05). En general, los niños presentaron mayor consumo de oxígeno pico (50.67 ± 8.52 ml/kg/min) que las niñas (45.19 ± 6.44 ml/kg/min). La interacción de sexo por grupo mostró que esta diferencia se explica por el mayor valor de los niños entrenados (58.80 ± 8.98 ml/kg/min) cuando se les comparó con las niñas entrenadas (47.51 ± 5.68 ml/kg/min), aunque tuvieran el mismo nivel de actividad física. El grupo entrenado (53.16 ± 9.34 ml/kg/min) presentó mayores valores de consumo de oxígeno pico comparados con los principiantes (48.90 ± 6.54 ml/kg/min), niños activos (45.46 ± 7.50 ml/kg/min) y niños sedentarios (44.63 ± 9.52 ml/kg/min). Los resultados sugieren que los niños prepubescentes que participan en programas de entrenamiento sistemáticos tienen mejores indicadores fisiológicos de capacidad aeróbica.Palabras claves. potencia aeróbica, actividad física, niños

Peak oxygen uptake and maximal power output of Olympic wheelchair-dependent athletes

1991 ◽  
Vol 23 (10) ◽  
pp. 1201???1209 ◽  
Author(s):  
H. E. J. VEEGER ◽  
M. HADJ YAHMED ◽  
L. H. V. VAN DER WOUDE ◽  
P. CHARPENTIER
Keyword(s):  
Oxygen Uptake ◽  
Power Output ◽  
Peak Oxygen Uptake ◽  
Maximal Power ◽  
Maximal Power Output

The Cycling Physiology of Miguel Indurain 14 Years After Retirement

2012 ◽  
Vol 7 (4) ◽  
pp. 397-400 ◽  
Author(s):  
Iñigo Mujika
Keyword(s):  
Oxygen Uptake ◽  
Blood Lactate ◽  
Body Mass ◽  
Power Output ◽  
Aerobic Power ◽  
Cycle Ergometer ◽  
Cycle Ergometer Test ◽  
Age Related ◽  
The Individual ◽  
Aerobic Power Output

Age-related fitness declines in athletes can be due to both aging and detraining. Very little is known about the physiological and performance decline of professional cyclists after retirement from competition. To gain some insight into the aging and detraining process of elite cyclists, 5-time Tour de France winner and Olympic Champion Miguel Indurain performed a progressive cycle-ergometer test to exhaustion 14 y after retirement from professional cycling (age 46 y, body mass 92.2 kg). His maximal values were oxygen uptake 5.29 L/min (57.4 mL · kg−1 · min−1), aerobic power output 450 W (4.88 W/kg), heart rate 191 beats/min, blood lactate 11.2 mM. Values at the individual lactate threshold (ILT): 4.28 L/min (46.4 mL · kg−1 · min−1), 329 W (3.57 W/kg), 159 beats/min, 2.4 mM. Values at the 4-mM onset of blood lactate accumulation (OBLA): 4.68 L/min (50.8 mL · kg−1 · min−1), 369 W (4.00 W/kg), 170 beats/min. Average cycling gross efficiency between 100 and 350 W was 20.1%, with a peak value of 22.3% at 350 W. Delta efficiency was 27.04%. Absolute maximal oxygen uptake and aerobic power output declined by 12.4% and 15.2% per decade, whereas power output at ILT and OBLA declined by 19.8% and 19.2%. Larger declines in maximal and submaximal values relative to body mass (19.4–26.1%) indicate that body composition changed more than aerobic characteristics. Nevertheless, Indurain’s absolute maximal and submaximal oxygen uptake and power output still compare favorably with those exhibited by active professional cyclists.

Prediction of peak oxygen uptake from age and power output at RPE 15 in obese women

2010 ◽  
Vol 110 (3) ◽  
pp. 645-649 ◽  
Author(s):  
Jérémy B. J. Coquart ◽  
Roger G. Eston ◽  
Jean-Marie Grosbois ◽  
Christine Lemaire ◽  
Alain-Eric Dubart ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Power Output ◽  
Peak Oxygen Uptake ◽  
Obese Women
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