Energy expenditure during the LANY Footrace 2011 – a case study

2012 ◽  
Vol 37 (6) ◽  
pp. 1247-1250 ◽  
Author(s):  
Luca Paolo Ardigò ◽  
Carlo Capelli
Keyword(s):  
Energy Expenditure ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Metabolic Cost ◽  
Adult Subject ◽  
Average Speed ◽  
Ultra Endurance

We reported results obtained in estimating the energy expenditure (EE) of an active adult subject participating in LANY Footrace 2011 (5129 km, 70 consecutive days). At each stage EE was calculated from literature metabolic cost equations and GPS-measured speeds–inclines. The subject’s average speed was 7.41 ± 0.51 km·h–1. Race expenditure amounted to 87% of EE (31.3 MJ·day–1) (47.8%–37.1% of measured maximal oxygen uptake). These results provide data about EE for future stage-type ultra-endurance competitors.

Physical capacity, respiratory quotient and energy expenditure during exercise in male patients with schizophrenia compared with healthy controls

2012 ◽  
Vol 27 (3) ◽  
pp. 206-212 ◽  
Author(s):  
B.M. Nilsson ◽  
R.M. Olsson ◽  
A. Öman ◽  
F.-A. Wiesel ◽  
L. Ekselius ◽  
...  
Keyword(s):  
Weight Gain ◽  
Energy Expenditure ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Respiratory Quotient ◽  
Physical Capacity ◽  
Healthy Controls ◽  
Uptake Capacity ◽  
Everyday Activity ◽  
Male Patients

AbstractBackgroundDespite massive research on weight gain and metabolic complications in schizophrenia there are few studies on energy expenditure and no current data on physical capacity.AimTo determine oxygen uptake capacity, respiratory quotient (RQ) and energy expenditure during a submaximal exercise test in patients with schizophrenia and healthy controls.MethodTen male patients and 10 controls were included. RQ and energy expenditure were investigated with indirect calorimetry during a cycle ergometer test. The submaximal work level was defined by heart rate and perceived exhaustion. Physical capacity was determined from predicted maximal oxygen uptake capacity (VO2-max).ResultsThe patients exhibited significantly higher RQ on submaximal workloads and lower physical capacity. A significant lower calculated VO2-max remained after correction for body weight and fat free mass (FFM). Energy expenditure did not differ on fixed workloads.ConclusionRQ was rapidly increasing in the patients during exercise indicating a faster transition to carbohydrate oxidation and anaerobic metabolism that also implies a performance closer to maximal oxygen uptake even at submaximal loads. This may restrict the capacity for everyday activity and exercise and thus contribute to the risk for weight gain. Physical capacity was consequently significantly lower in the patients.

Validation of the RT3 Accelerometer for Measuring Physical Activity of Children in Simulated Free-Living Conditions

2008 ◽  
Vol 20 (2) ◽  
pp. 181-197 ◽  
Author(s):  
David Xiaoqian Sun ◽  
Gordon Schmidt ◽  
Sock Miang Teo-Koh
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Oxygen Uptake ◽  
Metabolic Cost ◽  
Physical Activities ◽  
Living Conditions ◽  
Free Living ◽  
Outdoor Test ◽  
Activity Energy ◽  
Free Living Conditions

This is a validation study of the RT3 accelerometer for measuring physical activities of children in simulated free-living conditions. Twenty-five children age 12–14 years completed indoor testing, and 18 of them completed outdoor testing. Activity counts from the RT3 accelerometer estimated activity energy expenditure (AEE) and the Cosmed K4b2 analyzer measured oxygen uptake. Correlations were found between activity counts and metabolic cost (r = .95, p < .001), metabolic cost and RT3 estimated AEE (r = .96, p < .001) in the indoor test, activity counts and RT3 estimated AEE (r = .97, p < .001) in the outdoor test, and activity counts and metabolic cost when all activities were combined (r = .77, p < .001). Results indicate that the RT3 accelerometer might be used to provide acceptable estimates of free-living physical activity in children.

scholarly journals Effect of exercise training on energy expenditure, muscle volume, and maximal oxygen uptake in female adolescents

1996 ◽  
Vol 129 (4) ◽  
pp. 537-543 ◽  
Author(s):  
Alon Eliakim ◽  
Thomas J. Barstow ◽  
Jo Anne Brasel ◽  
Henry Ajie ◽  
W.-N.Paul Lee ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Exercise Training ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Muscle Volume ◽  
Female Adolescents

Relationship between mean habitual daily energy expenditure and maximal oxygen uptake

1995 ◽  
Vol 27 (8) ◽  
pp. 1170???1179 ◽  
Author(s):  
SOPHIE E. BERTHOUZE ◽  
PIERRE M. MINAIRE ◽  
JOSIANE CASTELLS ◽  
THIERRY BUSSO ◽  
LAURENCE VICO ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Daily Energy Expenditure ◽  
Daily Energy

Racing and Training Physiology of an Elite Ultra-Endurance Cyclist: Case Study of 2 Record-Setting Performances

2020 ◽  
pp. 1-5
Author(s):  
Jeffrey A. Rothschild ◽  
Matthieu Delcourt ◽  
Ed Maunder ◽  
Daniel J. Plews
Keyword(s):  
Case Report ◽  
Average Power ◽  
Training Intensity ◽  
Average Speed ◽  
Performance Requirements ◽  
Endurance Cycling ◽  
Pacing Strategies ◽  
Ultra Endurance ◽  
And Training

Purpose: To present a case report of an elite ultra-endurance cyclist, who was the winner and course record holder of 2 distinct races within a 4-month span: a 24-hour solo cycling race and a 2-man team multiday race (Race Across America). Methods: The athlete’s raw data (cycling power, heart rate [HR], speed, and distance) were obtained and analyzed for 2 ultra-endurance races and 11 weeks of training in between. Results: For the 24-hour race, the athlete completed 861.6 km (average speed 35.9 km·h−1, average power 210 W [2.8 W·kg−1], average HR 121 beats per minute) with a 37% decrease in power and a 22% decrease in HR throughout the race. During the 11 weeks between the 24-hour race and Race Across America, training intensity distribution (Zone 1/2/3) based on HR was 51%/39%/10%. For the Race Across America, total team time to complete the 4939-km race was 6 days, 10 hours, 39 minutes, at an average speed of 31.9 km·h−1. Of this, the athlete featured in this case study rode 75.2 hours, completing 2532 km (average speed 33.7 km·h−1, average power 203 W [2.7 W·kg−1]), with a 12% decrease in power throughout the race. Power during daytime segments was greater than nighttime (212 [25] vs 189 [18] W, P < .001, ). Conclusions: This case report highlights the performance requirements of elite ultra-endurance cycling. Although average power was similar when riding for 24 hours continuously and 75 hours intermittently over 6.5 days, there were large differences in pacing strategies and within-day power-output changes.

scholarly journals Running Stride Length And Rate Are Changed And Mechanical Efficiency Is Preserved After Cycling In Middle-Level Triathletes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Rodrigo Gomes da Rosa ◽  
Henrique Bianchi de Oliveira ◽  
Luca Paolo Ardigò ◽  
Natalia Andrea Gomeñuka ◽  
Gabriela Fischer ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Maximal Oxygen Uptake ◽  
Stride Length ◽  
Metabolic Cost ◽  
Mechanical Efficiency ◽  
Middle Level ◽  
Moderate Intensity ◽  
Cost Of Transport ◽  
Spatiotemporal Parameters ◽  
The Cost

AbstractAlthough cycling impairs the subsequent metabolic cost and performance of running in some triathletes, the consequences on mechanical efficiency (Eff) and kinetic and potential energy fluctuations of the body center of mass are still unknown. The aim of this study was to investigate the effects of previous cycling on the cost-of-transport, Eff, mechanical energy fluctuations (Wtot), spring stiffness (Kleg and Kvert) and spatiotemporal parameters. Fourteen middle-level triathletes (mean ± SD: maximal oxygen uptake, $$\dot{{\rm{V}}}$$V̇O2max = 65.3 ± 2.7 ml.kg−1.min−1, age = 30 ± 5 years, practice time = 6.8 ± 3.0 years) performed four tests. Two maximal oxygen uptake tests on a cycle ergometer and treadmill, and two submaximal 20-minute running tests (14 km.h−1) with (prior-cycling) and without (control) a previous submaximal 30-minute cycling test. No differences were observed between the control and post-cycling groups in Eff or Wtot. The Eff remains unchanged between conditions. On the other hand, the Kvert (20.2 vs 24.4 kN.m−1) and Kleg (7.1 vs 8.2 kN.m−1, p < 0.05) were lower and the cost-of-transport was higher (p = 0.018, 3.71 vs 3.31 J.kg−1.m−1) when running was preceded by cycling. Significantly higher stride frequency (p < 0.05, 1.46 vs 1.43 Hz) and lower stride length (p < 0.05, 2.60 vs 2.65 m) were observed in the running after cycling condition in comparison with control condition. Mechanical adjustments were needed to maintain the Eff, even resulting in an impaired metabolic cost after cycling performed at moderate intensity. These findings are compatible with the concept that specific adjustments in spatiotemporal parameters preserve the Eff when running is preceded by cycling in middle-level triathletes, though the cost-of-transport increased.

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