Comparison of respiratory function, energy expenditure and fatigue by using different types of cycle ergometer with belt length and wheel diameter

2017 ◽  
Vol 26 (1) ◽  
pp. 1203-1210
Author(s):  
Byung-Sun Lee ◽  
Ho-Sung Nho ◽  
Kyung-Ae Kim
Keyword(s):  
Energy Expenditure ◽  
Respiratory Function ◽  
Cycle Ergometer ◽  
Different Types

Energy expenditure during load carriage at high altitude

1981 ◽  
Vol 51 (1) ◽  
pp. 14-18 ◽  
Author(s):  
A. Cymerman ◽  
K. B. Pandolf ◽  
A. J. Young ◽  
J. T. Maher
Keyword(s):  
Energy Expenditure ◽  
High Altitude ◽  
Sea Level ◽  
Prediction Equation ◽  
Cycle Ergometer ◽  
Load Carriage ◽  
Metabolic Rates ◽  
Specific Exercise ◽  
Upper Limit ◽  
Predicted Values

To determine the applicability of a prediction equation for energy expenditure during load carriage at high altitude that was previously validated at sea level, oxygen uptake (Vo2) was determined in five young men at 4,300 m while they walked with backpack loads of 0, 15, and 30 kg at treadmill grades of 0,8, and 16% at 1.12 m.s-1 for 10 min. Mean +/- SE maximal Vo2, determined on the cycle ergometer, was 42.2 +/- 2.3 at sea level and 35.6 +/- 1.7 ml.kg-1 .min-1 at altitude. There were no significant differences in daily Vo2 at any specific exercise intensity on days 1, 5, and 9 of exposure, nor were there any differences in endurance times at the two most difficult exercise intensities. Endurance times for 15- and 30-kg loads at 16% grade were 7.3 and 4.2 min, respectively. Measured energy expenditure was compared with that predicted by the formula of Pandolf et al. (J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 43: 577–581, 1977) and found to be significantly different. The differences could be attributed to measurements at metabolic rates exceeding 730 W or 2.1 1.min-1 Vo2. These data indicate that the prediction equation can be used at altitude for exercise intensities not exceeding this upper limit. The observed deviations from predicted values at the high exercise intensities could possibly be attributed to the occurrence of appreciable oxygen deficits and the inability to achieve steady-state conditions.

scholarly journals Reliability and validity of a new accelerometer-based device for detecting physical activities and energy expenditure

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5775 ◽  
Author(s):  
Yanxiang Yang ◽  
Moritz Schumann ◽  
Shenglong Le ◽  
Shulin Cheng
Keyword(s):  
Energy Expenditure ◽  
Real Life ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Test Reliability ◽  
Free Living ◽  
Health Maintenance ◽  
Intra Class Correlation ◽  
Global Context ◽  
Different Types

Background Objective assessments of sedentary behavior and physical activity (PA) by using accelerometer-based wearable devices are ever expanding, given their importance in the global context of health maintenance. This study aimed to determine the reliability and validity of a new accelerometer-based analyzer (Fibion) for detecting different PAs and estimating energy expenditure (EE) during a simulated free-living day. Methods The study consisted of two parts: a reliability (n = 18) and a validity (n = 19) test. Reliability was assessed by a 45 min protocol of repeated sitting, standing, and walking (i.e., 3 × 15 min, repeated twice), using both Fibion and ActiGraph. Validity was assessed by a 12 h continuous sequence tasks of different types (sitting, standing, walking, and cycling) and intensities (light [LPA], moderate [MPA], and vigorous [VPA]) of PA. Two Fibion devices were worn on the thigh (FT) and in the pocket (FP), respectively and were compared with criteria measures, such as direct observation (criterion 1) and oxygen consumption by a portable gas analyzer, K4b2 (criterion 2). Results FT (intra-class correlation coefficients (ICCs): 0.687–0.806) provided similar reliability as the Actigraph (ICCs: 0.661–0.806) for EE estimation. However, the measurement error (ME) of FT compared to the actual time records indicated an underestimation of duration by 5.1 ± 1.2%, 3.8 ± 0.3% and 14.9 ± 2.6% during sitting, walking, and standing, respectively. During the validity test, FT but not FP showed a moderate agreement but lager variance with the criteria (1 and 2) in assessing duration of sitting, long sitting, LPA, MPA, and VPA (p > 0.05, ICCs: 0.071–0.537), as well as for EE estimation of standing, LPA, MPA, and VPA (p > 0.05, ICCs: 0.673–0.894). Conclusions FT provided similar reliability to that of the Actigraph. However, low correlations between subsequent measurements of both devices indicated large random MEs, which were somewhat diminished during the simulated 12 h real-life test. Furthermore, FT may accurately determine the types, intensities of PA and EE during prolonged periods with substantial changes in postures, indicating that the location of the accelerometer is essential. Further study with a large cohort is needed to confirm the usability of Fibion, especially for detecting the low-intensity PAs.

Energy Expenditure and Activity of Different Types of Small Ruminants Grazing Varying Pastures in the Summer

2010 ◽  
Vol 37 (1) ◽  
pp. 1-14 ◽  
Author(s):  
A. Beker ◽  
T. A. Gipson ◽  
R. Puchala ◽  
A. R. Askar ◽  
K. Tesfai ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Small Ruminants ◽  
Different Types

Estimation of Energy Expenditure in Healthy Adults From the YMCA Submaximal Cycle Ergometer Test

2007 ◽  
Vol 30 (2) ◽  
pp. 138-149 ◽  
Author(s):  
Nuria Garatachea ◽  
Euclides Cavalcanti ◽  
David García-López ◽  
Javier González-Gallego ◽  
Jose A. de Paz
Keyword(s):  
Energy Expenditure ◽  
Cycle Ergometer ◽  
Healthy Adults ◽  
Cycle Ergometer Test ◽  
Ergometer Test

Effects of elevated oxygen and carbon dioxide partial pressures on respiratory function and cognitive performance

2014 ◽  
Vol 117 (4) ◽  
pp. 406-412 ◽  
Author(s):  
Matthew Gill ◽  
Michael J. Natoli ◽  
Charles Vacchiano ◽  
David B. MacLeod ◽  
Keita Ikeda ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Respiratory Function ◽  
Vision Loss ◽  
Minute Ventilation ◽  
Cycle Ergometer ◽  
Hyperbaric Chamber ◽  
Tunnel Vision ◽  
Partial Pressures ◽  
Ergometer Exercise ◽  
End Tidal

Hyperoxia during diving has been suggested to exacerbate hypercapnic narcosis and promote unconsciousness. We tested this hypothesis in male volunteers (12 at rest, 10 at 75 W cycle ergometer exercise) breathing each of four gases in a hyperbaric chamber. Inspired Po2 (PiO2) was 0.21 and 1.3 atmospheres (atm) without or with an individual subject's maximum tolerable inspired CO2 (PiO2 = 0.055–0.085 atm). Measurements included end-tidal CO2 partial pressure (PetCO2), rating of perceived discomfort (RPD), expired minute ventilation (V̇e), and cognitive function assessed by auditory n-back test. The most prominent finding was, irrespective of PetCO2, that minute ventilation was 8–9 l/min greater for rest or exercise with a PiO2 of 1.3 atm compared with 0.21 atm ( P < 0.0001). For hyperoxic gases, PetCO2 was consistently less than for normoxic gases ( P < 0.01). For hyperoxic hypercapnic gases, n-back scores were higher than for normoxic gases ( P < 0.01), and RPD was lower for exercise but not rest ( P < 0.02). Subjects completed 66 hyperoxic hypercapnic trials without incident, but five stopped prematurely because of serious symptoms (tunnel vision, vision loss, dizziness, panic, exhaustion, or near syncope) during 69 normoxic hypercapnic trials ( P = 0.0582). Serious symptoms during hypercapnic trials occurred only during normoxia. We conclude serious symptoms with hyperoxic hypercapnia were absent because of decreased PetCO2 consequent to increased ventilation.

scholarly journals Effects of different types of training on weight loss

2019 ◽  
Vol 72 (9-10) ◽  
pp. 272-279
Author(s):  
Danijel Slavic ◽  
Dea Karaba-Jakovljevic ◽  
Andrea Zubnar ◽  
Borislav Tapavicki ◽  
Tijana Aleksandric ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Metabolic Rate ◽  
Body Mass ◽  
Resting Metabolic Rate ◽  
Young Male ◽  
Fat Free Mass ◽  
Daily Energy Expenditure ◽  
Total Body Mass ◽  
Daily Energy ◽  
Different Types

Introduction. The difference between 24-hour daily energy intake and total daily energy expenditure determines whether we lose or gain weight. The resting metabolic rate is the major component of daily energy expenditure, which depends on many different factors, but also on the level of physical activity. The aim of the study was to determine anthropometric and metabolic parameters of athletes engaged in different types of training, to compare obtained results and to examine whether there are statistically significant differences among them. Material and Methods. The study included a total of 42 young male athletes divided into two groups. The first group included 21 athletes who were predominantly engaged in aerobic type of training, and the other group of 21 athletes in anaerobic type of training. Anthropometric measurements were taken and resting metabolic rate was assessed using the indirect calorimetry method. The results were statistically analyzed and the differences in parameters between the two groups were compared. Results. Statistically significant differences were established in total body mass, amount of fat-free mass and muscle mass, body mass index, as well as in the relative metabolic indices between two groups of subjects. Conclusion. The percentage of fat-free body mass has the greatest impact on the resting metabolic rate. The rate of metabolic activity of this body compartment is higher in athletes engaged in aerobic than in athletes engaged in anaerobic type of training.

scholarly journals Exercise-Based Interventions in Middle-Aged and Older Adults after Myocardial Infarction: A Systematic Review

Life ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 928
Author(s):  
Nebojša Trajković ◽  
Dušan Đorđević ◽  
Mima Stanković ◽  
Tanja Petrušič ◽  
Špela Bogataj ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Older Adults ◽  
Relevant Literature ◽  
Cycle Ergometer ◽  
Experimental Program ◽  
Elderly Adults ◽  
Middle Aged ◽  
Optimal Duration ◽  
Different Types ◽  
Positive Effect

This study summarized the relevant literature and aimed to determine the effect of exercise-based interventions after myocardial infarction in middle-aged and older adults. Studies were identified and analyzed according to the PRISMA guidelines. The following electronic databases were used: Google Scholar, PubMed, Mendeley, Science Direct, and Scopus. The identified studies had to be longitudinal, be published in English, have taken place between 2010 and 2020, involve participants who had suffered myocardial infarction, and address different types of exercise-based interventions to be included. Of the 592 relevant studies identified, 20 were included in the qualitative analysis. After analyzing the results obtained, it could be concluded that different types of exercise-based interventions or their combination have a positive effect after myocardial infarction in middle-aged and elderly adults. It can also be suggested that the combination of a cycle ergometer and a treadmill may be the most effective exercise-based intervention. An adequate choice of intensity and volume is crucial, with the optimal duration of the experimental program and the type(s) of exercises adapted to participants after myocardial infarction.

scholarly journals Effect of tag attachment on flight parameters and energetic cost across five raptor species

2021 ◽  
Author(s):  
Arianna Longarini ◽  
Olivier Duriez ◽  
Emily Shepard ◽  
Kamran Safi ◽  
Martin Wikelski ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Movement Ecology ◽  
Energetic Cost ◽  
Systematic Bias ◽  
Flight Performance ◽  
Different Types ◽  
Vertical Speed ◽  
In The Wild ◽  
Flight Parameters

Bio-logging devices play a fundamental and indispensable role in movement ecology studies, particularly in the wild. However, researchers are becoming increasingly aware of the potential effects that attaching devices can have on animals, particularly on their behaviour, energy expenditure and survival. The way a device is attached to an animal's body has also potential effects on the collected data, and quantifying the type and magnitude of potential bias is fundamental to enable researchers to combine and compare data from different studies. Since over two decades, large terrestrial birds have been in the focus of long-term movement ecology research, employing bio-logging devices attached with different types of harnesses. However, comparative studies investigating the effects of harness type on these species are scarce. In this study, we tested for potential differences in data collected by two commonly used harness types, backpack and leg-loop, on the flight performance of 10 individuals from five raptor species, equipped with high resolution bio-logging devices, in the same area and time. We explored the effect of harness type on vertical speed, horizontal speed, glide ratio, height above sea level, distance travelled, proportion of soaring and flapping behaviour, and VeDBA (a proxy for energy expenditure) between and within individuals, all used as fine-scale measures of flight performance. Birds equipped with leg-loops climbed up to 0.65 ms-1 faster, reached 19% greater heights while soaring and spent less time with active flight compared to birds equipped with backpacks, suggesting that backpack harnesses, compared to leg-loops, might cause additional drag that lowered the birds' flight performance. A lower rate of sinking while gliding, a slightly higher glide ratio, higher horizontal speed while soaring, and lower VeDBA, were also indicative of decreased drag using leg-loops. Our results, add to the pre-existing literature highlighting the design-related advantages of leg-loops, and they are in support of considering leg-loops as a better alternative to backpack harnesses for large soaring birds. Our study also highlights the importance of investigating how the methodology used to measure behavioural information affects the collected data to avoid systematic bias, which would invalidate data comparability and lead to misinterpreting the behaviour being measured.

scholarly journals Influence of dynamic and static physical activity features on respiratory system of junior schoolgirls

2012 ◽  
Vol 93 (6) ◽  
pp. 870-874
Author(s):  
M M Zayneev ◽  
N I Ziyatdinova ◽  
O P Martiyanov ◽  
T L Zefirov
Keyword(s):  
Physical Exercise ◽  
Respiratory System ◽  
Cycle Time ◽  
Respiratory Function ◽  
Respiratory Function Tests ◽  
School Year ◽  
Function Tests ◽  
Different Types ◽  
Academic Year ◽  
Breath Cycle

Aim. To study the influence of different types of physical exercise on components of gases convective transport in junior schoolgirls. Methods. Twenty two 9 year old schoolgirls were included. The functional condition of respiratory system was estimated based on pulmonary function tests and respiratory volumes. Isometric physical exercise test was performed by the left hand compression of a dynamometer with the effort equal of 50% from maximum possible effort within 1 minute. Dynamic physical load was dosed as 1,0 W per 1 kg of body weight while pedalling a stationary exercise bicycle ergometer. Statistical difference between groups was determined using Student’s t-statistics. Results. Influence of dynamic and static physical exercise on respiratory function tests in 9 year old schoolgirls was studied at the beginning, in the middle and at the end of the school year. The comparative analysis of respiratory function tests in 9 year old schoolgirls at the beginning of academic year showed that isometric physical exercise caused the breath rate increase, and dynamic physical exercise led to decrease of this parameter. At the same time both types of physical exercise caused decrease in expiratory time to total breath cycle time ratio. In the middle of the academic year isometric physical exercise caused the breath rate decrease and maximum voluntary ventilation increase. As a whole, both in the middle and at the end of the academic year the respiratory system of 9 year old schoolgirls reacted adequately in reply to different types of physical exercise to optimize the performance. Conclusion. The most unfavorable reaction of respiratory system in 9 year old schoolgirls in reply to static and dynamic physical exercise at the beginning of the academic year was registered as a decrease of expiratory time to total breath cycle time ratio. The optimal reaction of respiratory system in 9 year old schoolgirls in reply to dynamic physical exercise was registered both in the middle and at the end of the school year, to static physical exercise - at the end of the school year.

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