scholarly journals INVESTIGATION OF LEAN BODY MASS AS A LIMITING FACTOR OF MAXIMUM OXYGEN UPTAKE

1974 ◽  
Vol 23 (3) ◽  
pp. 96-100 ◽  
Author(s):  
KAORU KITAGAWA ◽  
KOMEI IKUTA ◽  
YUKO HARA ◽  
KOICHI HIIRTA
Keyword(s):  
Oxygen Uptake ◽  
Lean Body Mass ◽  
Body Mass ◽  
Maximum Oxygen Uptake ◽  
Limiting Factor

scholarly journals Reference values for maximum oxygen uptake relative to body mass in Dutch/Flemish subjects aged 6–65 years: the LowLands Fitness Registry

2021 ◽  
Author(s):  
Geertje E. van der Steeg ◽  
Tim Takken
Keyword(s):  
Oxygen Uptake ◽  
Body Mass ◽  
Reference Values ◽  
Cardiopulmonary Exercise Testing ◽  
European Population ◽  
Study Data ◽  
Mean Difference ◽  
Maximum Oxygen Uptake ◽  
List Type ◽  
Maximum Effort

Abstract Background The maximum oxygen uptake (VO2max) during cardiopulmonary exercise testing (CPET) is considered the best measure of cardiorespiratory fitness. Aim To provide up-to-date reference values for the VO2max per kilogram of body mass (VO2max/kg) obtained by CPET in the Netherlands and Flanders. Methods The Lowlands Fitness Registry contains data from health checks among different professions and was used for this study. Data from 4612 apparently healthy subjects, 3671 males and 941 females, who performed maximum effort during cycle ergometry were analysed. Reference values for the VO2max/kg and corresponding centile curves were created according to the LMS method. Results Age had a negative significant effect (p < .001) and males had higher values of VO2max/kg with an overall difference of 18.0% compared to females. Formulas for reference values were developed: Males: VO2max/kg = − 0.0049 × age2 + 0.0884 × age + 48.263 (R2 = 0.9859; SEE = 1.4364) Females: VO2max/kg = − 0.0021 × age2 − 0.1407 × age + 43.066 (R2 = 0.9989; SEE = 0.5775). Cross-validation showed no relevant statistical mean difference between measured and predicted values for males and a small but significant mean difference for females. We found remarkable higher VO2max/kg values compared to previously published studies. Conclusions This is the first study to provide reference values for the VO2max/kg based on a Dutch/Flemish cohort. Our reference values can be used for a more accurate interpretation of the VO2max in the West-European population.

Seasonal Changes in Fitness Parameters in a World Champion Rowing Crew

2012 ◽  
Vol 7 (2) ◽  
pp. 189-192 ◽  
Author(s):  
Pavle Mikulic
Keyword(s):  
Body Composition ◽  
Oxygen Uptake ◽  
Body Mass ◽  
Power Output ◽  
Maximum Oxygen Uptake ◽  
Training Cycle ◽  
World Class ◽  
And Performance ◽  
World Champion ◽  
Gas Exchange Threshold

Purpose:To examine variations in physical, physiological, and performance parameters over an annual training cycle in a world champion rowing crew.Methods:Four world-class rowers, all of them members of the men’s heavyweight quadruple sculls squad who are current world rowing champions, were assessed 3 times at regular 4-mo intervals during the 2011 season (November 2010, March 2011, and July 2011). Physical assessments included stature, body mass, body composition, whereas physiological and performance assessments obtained during an incremental rowing ergometer test to exhaustion included maximum oxygen uptake and anaerobic gas-exchange threshold with corresponding power output values.Results:Body mass (∼95 kg) and body composition (∼12% body fat) remained stable over the annual training cycle. Power output at anaerobic gas-exchange threshold increased +16% from November to July, whereas the corresponding oxygen uptake, expressed as a percentage of maximum oxygen uptake, increased from 83% to 90%. Maximum oxygen uptake decreased from 6.68 L/min in November to 6.10 L/min in March before rising to 6.51 L/min in July. The corresponding power output increased steadily from 450 W to 481 W.Conclusion:Seasonal variation in body mass and body composition of 4 examined world-class rowers was minimal. Oxygen uptake and power output corresponding to anaerobic threshold continuously increased from off-season to peak competition season. Seasonal variation in maximum oxygen uptake reached ∼10%; however, it remained above 6 L/min, that is, the value consistently observed in top caliber heavyweight rowers regardless of the time of the assessment.

Cardiorespiratory Effects of Weight Reduction by Exercise in Middle-Aged Women with Obesity

1994 ◽  
Vol 22 (3) ◽  
pp. 160-164 ◽  
Author(s):  
J Katoh ◽  
Y Hara ◽  
K Narutaki
Keyword(s):  
Body Mass Index ◽  
Heart Rate ◽  
Oxygen Uptake ◽  
Body Mass ◽  
Weight Reduction ◽  
The Body ◽  
Maximum Oxygen Uptake ◽  
Middle Aged ◽  
Physical Strength ◽  
Exercise Period

The cardiorespiratory responses to weight reduction due to physical exercise were examined in fourteen women with obesity, aged 36 to 67 years (Body Mass Index, 32.4 ± 1.4 kg/m2). The patients were instructed to exercise at approximately 60% of maximum oxygen uptake for 2 h every day for approximately 3 months. To evaluate physical strength, a graded cycling exercise test was performed both before and after the exercise period, monitoring gas exchange, ventilation, and heart rate. After the exercise period the body mass index and percentage fat both decreased by 11% and 18%, respectively ( P < 0.001), although lean body mass did not change; maximum oxygen uptake and maximum heart rate did not change significantly, but peak ventilation equivalent, maximum metabolic equivalent and maximum load increased by 12%, 14% and 11%, respectively ( P < 0.05, P < 0.001 and P < 0.001, respectively). Maximum oxygen uptake per unit body weight increased by 5% ( P < 0.001). These results suggest that weight reduction as a result of exercise improves cardiorespiratory function in middle-aged women with obesity.

Effects of dieting and exercise on lean body mass, oxygen uptake, and strength

1985 ◽  
Vol 17 (4) ◽  
pp. 466-471 ◽  
Author(s):  
KONSTANTIN N. PAVLOU ◽  
WILLIAM P. STEFFEE ◽  
ROBERT H. LERMAN ◽  
BELTON A. BURROWS
Keyword(s):  
Oxygen Uptake ◽  
Lean Body Mass ◽  
Body Mass

scholarly journals Quantifying Maximal Oxygen Uptake using Lean Body Mass in Children with Obesity

2019 ◽  
Vol 33 (S1) ◽  
Author(s):  
Dharini M Bhammar ◽  
Rubria Marines‐Price ◽  
Daniel P Wilhite ◽  
Vipa Bernhardt ◽  
Beverley Adams‐Huet ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Lean Body Mass ◽  
Body Mass ◽  
Maximal Oxygen Uptake

Level of cardiovascular fitness and it’s relationship with physical activity and body mass index in young adults of Islamabad

2021 ◽  
pp. 1-12
Author(s):  
Zainab Khatoon ◽  
Muhammad Afzaal Afridi ◽  
Taqdees-e-Maryam ◽  
Afifa Gull ◽  
Hania Farheen
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Young Adults ◽  
Oxygen Uptake ◽  
Body Mass ◽  
Short Form ◽  
Cardiovascular Fitness ◽  
Maximum Oxygen Uptake ◽  
Normal Body Mass Index ◽  
Significant Difference

Abstract Objective: To determine the level of cardiovascular fitness in young adults, and to find the relationship of maximum oxygen uptake with body mass index and physical activity. Methods: The cross-sectional study was conducted at two private universities in Islamabad, Pakistan, from January to June 2019, and comprised subjects of both genders aged 18-25 years with normal cardiopulmonary system. Physical activity was measured usint the short form of International Physical Activity Questionnaire, while maximum oxygen uptake was measured using the Bruce protocol. Data was analysed using SPSS 24. Results: Of the 321 subjects, 59(18.4%) were males and 262(81.6%) were females. The overall mean age was 21.15±1.73 years. Overall, 190(57.3%) subjects had normal body mass index, 86(26.8%) had high level of physical activity, and 85(26.5%) had moderate level. With respect to to maximum oxygen uptake, 28(47.5%) of the males were in the superior category, while 72(27.5%) women were in the good category. All the vitals along with dyspnoea and fatigue showed significant difference (p?0.05) except oxygen saturation (p=0.062). Maximum oxygen uptake showed negative weak (p=0.40) correlation with body mass index, and weak, positive and significant correlation (p=0.007) with physical activity. Conclusion: Majority of the young adults were found to be active as indicated by the levels of their maximum oxygen uptake and physical activity. Significant correlation was found between cardiovascular fitness and physical activity. Continuous...

scholarly journals A placebo-controlled randomized study with testosterone in Klinefelter syndrome: beneficial effects on body composition

2019 ◽  
Vol 8 (9) ◽  
pp. 1250-1261 ◽  
Author(s):  
Christian Høst ◽  
Anders Bojesen ◽  
Mogens Erlandsen ◽  
Kristian A Groth ◽  
Kurt Kristensen ◽  
...  
Keyword(s):  
Body Composition ◽  
Oxygen Uptake ◽  
Lean Body Mass ◽  
Body Mass ◽  
Body Fat ◽  
Fat Mass ◽  
Maximal Oxygen Uptake ◽  
Klinefelter Syndrome ◽  
Abdominal Fat ◽  
Testosterone Treatment

Context and objective Males with Klinefelter syndrome (KS) are typically hypogonadal with a high incidence of metabolic disease, increased body fat and mortality. Testosterone treatment of hypogonadal patients decrease fat mass, increase lean body mass and improve insulin sensitivity, but whether this extends to patients with KS is presently unknown. Research design and methods In a randomized, double-blind, placebo-controlled, BMI-matched cross-over study, 13 males with KS (age: 34.8 years; BMI: 26.7 kg/m2) received testosterone (Andriol®) 160 mg per day (testosterone) or placebo treatment for 6 months. Thirteen age- and BMI-matched healthy controls were recruited. DEXA scan, abdominal computed tomography (CT) scan and a hyperinsulinemic–euglycemic clamp, muscle strength and maximal oxygen uptake measurement were performed. Results Total lean body mass and body fat mass were comparable between testosterone-naïve KS and controls using DEXA, whereas visceral fat mass, total abdominal and intra-abdominal fat by CT was increased (P < 0.05). Testosterone decreased total body fat (P = 0.01) and abdominal fat by CT (P = 0.04). Glucose disposal was similar between testosterone-naïve KS and controls (P = 0.3) and unchanged during testosterone (P = 0.8). Free fatty acid suppression during the clamp was impaired in KS and maximal oxygen uptake was markedly lower in KS, but both were unaffected by treatment. Testosterone increased hemoglobin and IGF-I. Conclusion Testosterone treatment in adult males with KS for 6 months leads to favorable changes in body composition with reductions in fat mass, including abdominal fat mass, but does not change measures of glucose homeostasis.

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