scholarly journals Energy Cost of Resistance Exercises: an Uptade

2011 ◽  
Vol 29A (Special-Issue) ◽  
pp. 33-39 ◽  
Author(s):  
Victor Reis ◽  
Roberto Júnior ◽  
Adam Zajac ◽  
Diogo Oliveira
Keyword(s):  
Resistance Exercise ◽  
Strength Training ◽  
Body Mass ◽  
Energy Cost ◽  
Large Body ◽  
Oxygen Deficit ◽  
Estimation Methods ◽  
Cost Calculation ◽  
Resistance Exercises ◽  
Cost Of Resistance

Energy Cost of Resistance Exercises: an UptadeThe use of resistance exercises and of typical strength training methods have been progressively used to control body mass and to promote fat mass loss. The difficulties involved in the energy cost calculation during strength training are associated with the large amount of exercises and their several variations. Mean values between ≈3 and 30 kcal·min-1are typically reported but our studies indicate that it may attain values as high as 40 kcal·min-1in exercises which involve a large body mass. Therefore, in our opinion, the next step in research must be the isolated study of each of the main resistance exercises. Since the literature is scarce and that we do consider that the majority of the studies present severe limitations, the aim of this paper is to present a critical analysis of the energy cost estimation methods and provide some insights that may help to improve knowledge on resistance exercise. It seems necessary to rely on the expired O2measurements to quantify aerobic energy. However, it is warranted further attention on how this measure is performed during resistance exercises. In example, studies on the O2on-kinetics at various conditions are warranted (i.e. as a function of intensity, duration and movement speed). As for anaerobic lactic energy, it is our opinion that both the accumulated oxygen deficit and the blood lactate energy equivalent deserve further studies; analyzing variations of each method as an attempt to establish which is more valid for resistance exercise. The quantification of alactic anaerobic energy should be complemented by accurate studies on the muscle mass involved in the different resistance exercises. From the above, it is concluded that knowledge on the energy cost in resistance exercises is in its early days and that much research is warranted before appropriate reference values may be proposed.

Estimating the Energy Cost of Resistance Exercise in Men and Women

2014 ◽  
Vol 46 ◽  
pp. 569
Author(s):  
Stephen F. Crouse ◽  
Brad S. Lambert ◽  
Steven E. Martin ◽  
John S. Green ◽  
Alex T. Carradine ◽  
...  
Keyword(s):  
Resistance Exercise ◽  
Energy Cost ◽  
Men And Women ◽  
Cost Of Resistance

Vitamin C and E supplementation blunts increases in total lean body mass in elderly men after strength training

2015 ◽  
Vol 26 (7) ◽  
pp. 755-763 ◽  
Author(s):  
T. Bjørnsen ◽  
S. Salvesen ◽  
S. Berntsen ◽  
K. J. Hetlelid ◽  
T. H. Stea ◽  
...  
Keyword(s):  
Vitamin C ◽  
Strength Training ◽  
Lean Body Mass ◽  
Body Mass ◽  
Elderly Men ◽  
Total Lean Body Mass

scholarly journals Biologic features and prognosis of ductal carcinoma in situ are not adversely impacted by initial large body mass

2012 ◽  
Vol 133 (3) ◽  
pp. 1131-1141 ◽  
Author(s):  
Henry M. Kuerer ◽  
Sara A. Lari ◽  
Banu K. Arun ◽  
Chung-Yuan Hu ◽  
Abenaa Brewster ◽  
...  
Keyword(s):  
Body Mass ◽  
Ductal Carcinoma In Situ ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Large Body

Effects of 12 weeks of aerobic versus combined aerobic plus resistance exercise training on short-term blood pressure variability in patients with hypertension

2021 ◽  
Vol 130 (4) ◽  
pp. 1085-1092
Author(s):  
Giuseppe Caminiti ◽  
Ferdinando Iellamo ◽  
Annalisa Mancuso ◽  
Anna Cerrito ◽  
Matteo Montano ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Exercise Training ◽  
Resistance Exercise ◽  
Aerobic Exercise ◽  
Blood Pressure Variability ◽  
Short Term ◽  
Resistance Exercise Training ◽  
Hypertensive Patients ◽  
Combined Exercise ◽  
Resistance Exercises

Combined exercise training (CT) including aerobic plus resistance exercises could be more effective in comparison with aerobic exercise (AT) alone in reducing blood pressure variability (BPV) in hypertensive patients. We report that CT was indeed more effective than AT in reducing short-term BPV, and both exercise modalities reduced BP levels to the same extent. CT appears to be a more appropriate exercise modality if the objective is to reduce BPV in addition to BP levels.

Speed, stride frequency and energy cost per stride: how do they change with body size and gait?

1988 ◽  
Vol 138 (1) ◽  
pp. 301-318 ◽  
Author(s):  
N. C. Heglund ◽  
C. R. Taylor
Keyword(s):  
Body Size ◽  
Body Mass ◽  
Energy Cost ◽  
Reaction Force ◽  
Stride Frequency ◽  
Energetic Cost ◽  
Published Data ◽  
Frequency Change ◽  
Cost Of Locomotion ◽  
The Cost

In this study we investigate how speed and stride frequency change with body size. We use this information to define ‘equivalent speeds’ for animals of different size and to explore the factors underlying the six-fold difference in mass-specific energy cost of locomotion between mouse- and horse-sized animals at these speeds. Speeds and stride frequencies within a trot and a gallop were measured on a treadmill in 16 species of wild and domestic quadrupeds, ranging in body size from 30 g mice to 200 kg horses. We found that the minimum, preferred and maximum sustained speeds within a trot and a gallop all change in the same rather dramatic manner with body size, differing by nine-fold between mice and horses (i.e. all three speeds scale with about the 0.2 power of body mass). Although the absolute speeds differ greatly, the maximum sustainable speed was about 2.6-fold greater than the minimum within a trot, and 2.1-fold greater within a gallop. The frequencies used to sustain the equivalent speeds (with the exception of the minimum trotting speed) scale with about the same factor, the −0.15 power of body mass. Combining this speed and frequency data with previously published data on the energetic cost of locomotion, we find that the mass-specific energetic cost of locomotion is almost directly proportional to the stride frequency used to sustain a constant speed at all the equivalent speeds within a trot and a gallop, except for the minimum trotting speed (where it changes by a factor of two over the size range of animals studied). Thus the energy cost per kilogram per stride at five of the six equivalent speeds is about the same for all animals, independent of body size, but increases with speed: 5.0 J kg-1 stride-1 at the preferred trotting speed; 5.3 J kg-1 stride-1 at the trot-gallop transition speed; 7.5 J kg-1 stride-1 at the preferred galloping speed; and 9.4 J kg-1 stride-1 at the maximum sustained galloping speed. The cost of locomotion is determined primarily by the cost of activating muscles and of generating a unit of force for a unit of time. Our data show that both these costs increase directly with the stride frequency used at equivalent speeds by different-sized animals. The increase in cost per stride with muscles (necessitating higher muscle forces for the same ground reaction force) as stride length increases both in the trot and in the gallop.

scholarly journals Demography, heritability and genetic correlation of feline hip dysplasia and response to selection in a health screening programme

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Matthew Low ◽  
Per Eksell ◽  
Kjell Högström ◽  
Ulrika Olsson ◽  
Lars Audell ◽  
...  
Keyword(s):  
Genetic Correlation ◽  
Body Mass ◽  
Hip Dysplasia ◽  
Selective Breeding ◽  
Screening Programme ◽  
Large Body ◽  
Health Screening ◽  
Response To Selection ◽  
Body Type ◽  
Breeding Programmes

AbstractFeline hip dysplasia (FHD) is a debilitating condition affecting the hip joints of millions of domestic cats worldwide. Despite this, little is known about FHD except that it is relatively common in the large breed Maine Coon. We used 20 years of data from 5038 pedigree-registered Maine Coon cats in a radiographic health screening programme for FHD to determine, for the first time, its heritability, genetic correlation to body mass and response to selection. FHD prevalence was 37.4%, with no sex predilection; however, FHD severity increased with age and body mass. Heritability of the radiographic categories used to classify FHD severity was 0.36 (95%CI: 0.30–0.43). The severity of FHD symptoms was also genetically correlated with body mass (0.285), suggesting that selection for a large body type in this breed concurrently selects for FHD. Support for this was found by following generational responses to selective breeding against FHD. Not only did selective breeding successfully reduce the severity of FHD symptoms in descendants, but these cats were also smaller than their ancestors (−33g per generation). This study highlights the value of breeding programmes against FHD and cautions against breed standards that actively encourage large bodied cats.

scholarly journals First Cost Calculation Methods for Road Freight Transport Activity

2017 ◽  
Vol 18 (2) ◽  
pp. 107-117 ◽  
Author(s):  
György Kovács
Keyword(s):  
State Of The Art ◽  
Common Type ◽  
Estimation Methods ◽  
Cost Calculation ◽  
Transport Activity ◽  
Calculation Methods ◽  
Transport Costs ◽  
Art Practices ◽  
Road Freight ◽  
The Individual

Abstract The transport activity is one of the most expensive processes in the supply chain. Forwarding and transport companies focuses on the optimization of transportation and the reduction of transport costs. The goal of this study is to develop a method which calculate the first (prime) cost of a given transport task more precisely than the state of the art practices. In practice the calculation of transport fee depends on the individual estimation methods of the transport managers, which could result losses for the company. In this study the elaborated calculation method for total first cost is detailed for three types of fulfilment of transport tasks. The most common type of achievement is, when “own vehicle is used with own driver”. A software was also developed for this case based on the elaborated method. Based on the calculations of our software, the first cost can be defined quickly and precisely to realize higher profit.

Life Estimation of Pressurized-Air Solar-Thermal Receiver Tubes

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
David K. Fork ◽  
John Fitch ◽  
Shawn Ziaei ◽  
Robert I. Jetter
Keyword(s):  
Large Body ◽  
Inelastic Strain ◽  
Current Data ◽  
Solar Thermal ◽  
Estimation Methods ◽  
Inlet Temperature ◽  
Operational Conditions ◽  
Thermal Receiver ◽  
Cyclic Operation ◽  
Strain Model

The operational conditions of the solar-thermal receiver for a Brayton cycle engine are challenging, and lack a large body of operational data unlike steam plants. We explore the receiver's fundamental element, a pressurized tube in time varying solar flux for a series of 30 yr service missions based on hypothetical power plant designs. We developed and compared two estimation methods to predict the receiver tube lifetime based on available creep life and fatigue data for alloy 617. We show that the choice of inelastic strain model and the level of conservatism applied through design rules will vary the lifetime predictions by orders of magnitude. Based on current data and methods, a turbine inlet temperature of 1120 K is a necessary 30-yr-life-design condition for our receiver. We also showed that even though the time at operating temperature is about three times longer for fossil fuel powered (steady) operation, the damage is always lower than cyclic operation using solar power.

scholarly journals Effects of Combined Aerobic and Strength Training on Aerobic Capacity and Body Composition

2019 ◽  
Vol 7 (4) ◽  
pp. 14
Author(s):  
Nuri Topsakal ◽  
Osman Ates ◽  
Burcak Keskin ◽  
Orhan Armutcu
Keyword(s):  
Body Mass Index ◽  
Strength Training ◽  
Body Mass ◽  
Body Fat ◽  
Aerobic Capacity ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Combined Training ◽  
Waist Hip Ratio ◽  
Group 16

The purpose of this study was to analyse the effects of combined aerobic and strength training in circuit training on body fat ratio. The universe of this study was selected as 32 male participants who continue their training and do fitness for health. Participants were divided into 2 groups: aerobic group (16 people) and combined group (16 people). This study was applied for 8 weeks, 3 days per week, and 1 hour per day. Participants were informed about how the tests will be conducted. An aerobic capacity test, body fat percentage, body mass index, and waist-hip ratio were among the applied tests and measurements. Data were analysed with SPSS 21 package program. Average and standard deviation of obtained data were calculated. Results showed that results of aerobic and combined trainings were similarly, and both aerobic and combined training positively affected body weight, body mass index, body fat percentage, and aerobic capacity values. Additionally, it can be stated that aerobic exercises directly affected waist-hip ratio compared to combined exercises, and combined training was more efficient for waist-hip ratio.

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