scholarly journals Aerobic capacity and respiratory patterns are better in recreational basketball-engaged university students than age-matched untrained males

2021 ◽  
Vol 13 (1) ◽  
pp. 111-120
Author(s):  
Mladen Mikić ◽  
Marko D.M. Stojanović ◽  
Aleksandra Milovančev ◽  
Tatjana Miljković ◽  
Marija Bjelobrk ◽  
...  
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
University Students ◽  
Aerobic Capacity ◽  
Ventilatory Threshold ◽  
Maximal Oxygen Consumption ◽  
Body Height ◽  
Time To Exhaustion ◽  
Respiratory Parameters ◽  
Recreational Basketball

Abstract Study aim: To asses and compare the aerobic capacity and respiratory parameters in recreational basketball-engaged university students with age-matched untrained young adults. Material and methods: A total of 30 subjects were selected to took part in the study based on recreational-basketball activity level and were assigned to a basketball (BG: n = 15, age 22.86 ± 1.35 yrs., body height 185.07 ± 5.95 cm, body weight 81.21 ± 6.15 kg) and untrained group (UG: n = 15, age 22.60 ± 1.50 yrs., body height 181.53 ± 6.11 cm, body weight 76.89 ± 7.30 kg). Inspiratory vital capacity (IVC), forced expiration volume (FEV1), FEV1/IVC ratio, maximal oxygen consumption (VO2max), ventilatory threshold (VO2VT) and time to exhaustion, were measured in all subjects. Student T-test for independent Sample and Cohen’s d as the measure of the effect size were calculated. Results: Recreational basketball-engaged students (EG) reached significantly greater IVC (t = 7.240, p < 0.001, d = 1.854), FEV1 (t = 10.852, p < 0.001, d = 2.834), FEV1/IVC ratio (t = 6.370, p < 0.001, d = 3.920), maximal oxygen consumption (t = 9.039, p < 0.001, d = 3.310), ventilatory threshold (t = 9.859, p < 0.001, d = 3.607) and time to exhaustion (t = 12.361, p < 0.001, d = 4.515) compared to UG. Conclusions: Long-term exposure to recreational basketball leads to adaptive changes in aerobic and respiratory parameters in male university students.

β-Adrenergic receptor number in human lymphocytes is inversely correlated with aerobic capacity

1998 ◽  
Vol 274 (6) ◽  
pp. E1106-E1112 ◽  
Author(s):  
Nobuharu Fujii ◽  
Sachiko Homma ◽  
Fumio Yamazaki ◽  
Ryoko Sone ◽  
Takeshi Shibata ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Aerobic Capacity ◽  
Adrenergic Receptor ◽  
Ventilatory Threshold ◽  
Human Lymphocytes ◽  
Mrna Level ◽  
Maximal Oxygen Consumption ◽  
Subsequent Degradation ◽  
Intracellular Compartments ◽  
Model Cell

In the present study, the relationships between β-adrenergic receptor (β-AR) expression and aerobic capacity evaluated by maximal oxygen consumption ([Formula: see text]) and oxygen consumption level at ventilatory threshold (V˙o 2@VT) were investigated. Seventeen physically untrained and 25 trained men participated in the study. After supine resting, the peripheral blood was sampled for preparation of lymphocytes, the model cell used to analyze the β-AR state. The total number of β-AR in lymphocytes (β-ARtotal) was inversely correlated with theV˙o 2 max( r = −0.368; P < 0.05) and theV˙o 2@VT ( r = −0.359; P < 0.05). Similar relationships were also observed between the number of β-AR in cell surface and both V˙o 2 max( r = −0.491; P < 0.05) andV˙o 2@VT ( r = −0.498; P < 0.05). However, no correlation was obtained between the number of β-AR in intracellular compartments and eitherV˙o 2 max orV˙o 2@VT. The β2-AR mRNA level quantified by the use of competitive reverse transcription-polymerase chain reaction was inversely correlated withV˙o 2@VT ( r = −0.567; P < 0.05) and positively correlated with β-ARtotal( r = 0.521; P < 0.05). These findings suggest that the β-AR number in lymphocytes is inversely correlated with aerobic capacity. This relationship may be explained by downregulation of β-AR, including internalization with subsequent degradation of the receptors and inhibition of the β-AR biosynthesis.

Peak Oxygen Consumption and Ventilatory Thresholds on Six Modes of Exercise

1996 ◽  
Vol 21 (2) ◽  
pp. 79-89 ◽  
Author(s):  
Thomas D. Smith ◽  
Tom R. Thomas ◽  
Ben R. Londeree ◽  
Qiang Zhang ◽  
George Ziogas
Keyword(s):  
Oxygen Consumption ◽  
Key Words ◽  
Aerobic Capacity ◽  
Lactate Threshold ◽  
Ventilatory Threshold ◽  
Maximal Oxygen Consumption ◽  
The Other ◽  
Peak Oxygen Consumption ◽  
Capacity Measure ◽  
Post Hoc

In order to compare responses on six modes of exercise for maximal oxygen consumption [Formula: see text] and ventilatory thresholds (VT-I, VT-2), 10 male recreational exercisers (23 ± 3 yrs) completed incremental maximal tests on treadmill, stationary skier, shuffle skier, stepper, stationary cycle, and rower. After extensive habituation, [Formula: see text], VT-1, and VT-2 were determined during each maximal bout. A MANOVA followed by ANOVAs, Tukey post hoc tests, and noncentral F tests indicated that the treadmill elicited a significantly higher peak oxygen consumption than did the other modes, and the skier and stepper values were higher than the rower. [Formula: see text] at VT-1 was higher on the treadmill than cycle. The treadmill also elicited a higher [Formula: see text] at VT-2 than the shuffle skier, cycle, and rower. However, no differences were observed among modes for VT-1 and VT-2 when expressed as a percentage of [Formula: see text]. These results suggest that the treadmill elicits a higher aerobic capacity measure than other modes, but the ventilatory threshold responses [Formula: see text] are similar among modes. Key words: exercise mode, aerobic capacity, lactate threshold

scholarly journals Pulmonary function and aerobic capacity in asymptomatic bariatric candidates with very severe morbid obesity

2004 ◽  
Vol 59 (4) ◽  
pp. 181-186 ◽  
Author(s):  
Joel Faintuch ◽  
Shirley A. F. Souza ◽  
Antonio C. Valezi ◽  
Antonio F. Sant'Anna ◽  
Joaquim José Gama-Rodrigues
Keyword(s):  
Body Weight ◽  
Aerobic Capacity ◽  
Maximal Oxygen Consumption ◽  
Metabolic Cost ◽  
Forced Expiratory Volume ◽  
Pulmonary Insufficiency ◽  
Severely Obese ◽  
Total Fat ◽  
And Gender ◽  
A Prospective Study

PURPOSE: Aerobic capacity and respiratory function may be compromised in obesity, but few studies have been done in highly obese bariatric candidates. In a prospective study, these variables were documented in the preoperative period, aiming to define possible physiologic limitations in a apparently healthy and asymptomatic population. METHOD: Forty-six consecutively enrolled adults (age 39.6 ± 8.4 years, 87.0% females, body mass index /BMI 49.6 ± 6.3 kg/m² ) were analyzed. Ventilatory variables were investigated by automated spirometry, aerobic capacity was estimated by a modified Bruce test in an ergometric treadmill, and body composition was determined by bioimpedance analysis. RESULTS: Total fat was greatly increased (46.4 ± 4.6% of body weight) and body water reduced (47.3 ± 4.6 % body weight), as expected for such obese group. Spirometric findings including forced vital capacity of 3.3 ± 0.8 L and forced expiratory volume-1 second of 2.6 ± 0.6 L were usually acceptable for age and gender, but mild restrictive pulmonary insufficiency was diagnosed in 20.9%. Aerobic capacity was more markedly diminished, as reflected by very modest maximal time (4.5 ± 1.1 min) and distance (322 ±142 m) along with proportionally elevated maximal oxygen consumption (23.4 ± 9.5 mL/kg/min) achieved by these subjects during test exercise. CONCLUSIONS: 1) Cardiopulmonary evaluation was feasible and well-tolerated in this severely obese population; 2) Mean spirometric variables were not diminished in this study, but part of the population displayed mild restrictive changes; 3) Exercise tolerance was very negatively influenced by obesity, resulting in reduced endurance and excessive metabolic cost for the treadmill run; 4) More attention to fitness and aerobic capacity is recommended for seriously obese bariatric candidates;

COMPARISON OF LACTATE AND VENTILATORY THRESHOLD TO MAXIMAL OXYGEN CONSUMPTION: A META-ANALYSIS 402

1996 ◽  
Vol 28 (Supplement) ◽  
pp. 68
Author(s):  
F. B. Wyatt ◽  
Z. V. Tran ◽  
C. G. Jackson ◽  
R. J. Brustad ◽  
N. Banchero
Keyword(s):  
Oxygen Consumption ◽  
Ventilatory Threshold ◽  
Meta Analysis ◽  
Maximal Oxygen Consumption

scholarly journals Increasing Iron Status through Dietary Supplementation in Iron-Depleted, Sedentary Women Increases Endurance Performance at Both Near-Maximal and Submaximal Exercise Intensities

2019 ◽  
Vol 149 (2) ◽  
pp. 231-239 ◽  
Author(s):  
Laura M Pompano ◽  
Jere D Haas
Keyword(s):  
Oxygen Consumption ◽  
Aerobic Exercise ◽  
Physical Performance ◽  
Iron Supplementation ◽  
Aerobic Training ◽  
Ventilatory Threshold ◽  
Iron Status ◽  
Maximal Oxygen Consumption ◽  
Endurance Performance ◽  
Mean Difference

ABSTRACT Background Iron deficiency persists as the most common micronutrient deficiency globally, despite having known detrimental effects on physical performance. Although iron supplementation and aerobic exercise have been examined individually and are known to improve physical performance, the impact of simultaneous iron supplementation and aerobic training remains unclear. Objective The aim of this study was to examine the individual and combined effects of iron supplementation and aerobic training on improving maximal and submaximal physical performance in iron-depleted, nonanemic (IDNA) women. We hypothesized that women receiving iron would improve their endurance performance but not their estimated maximal oxygen consumption (eVO2max). Methods Seventy-three sedentary, previously untrained IDNA (serum ferritin <25 µg/L and hemoglobin >110 g/L) women aged 18–26 y with a body mass index (kg/m2) of 17–25 participated in a double-blind, 8-wk, randomized controlled trial with a 2 × 2 factorial design including iron supplementation (42 mg elemental Fe/d) or placebo and aerobic exercise training (5 d/wk for 25 min at 75–85% of age-predicted maximum heart rate) or no training. Linear models were used to examine relations between training, supplement, and changes in the primary outcomes of observed maximal oxygen consumption (VO2peak) and eVO2max and ventilatory threshold (absolute oxygen consumption and percentage of maximum). Re-evaluation of a published meta-analysis was used to compare effects of iron supplementation on maximal oxygen consumption (VO2max) and VO2peak. Results There were significant training-by-supplement interactions for VO2peak, volume of oxygen consumption at the ventilatory threshold, and the percentage of eVO2max where the threshold occurred, with the iron-untrained group performing better than the placebo-untrained group. There was no beneficial effect of iron supplementation for VO2max (mean difference: 0.53; 95% CI: −0.75, 1.81; P = 0.42), but a significant benefit was observed for VO2peak (mean difference: 1.87; 95% CI: 0.15, 3.60; P = 0.03). Conclusions Iron supplementation increases endurance performance at submaximal and maximal (VO2peak) exercise intensities in IDNA women. However, increasing iron status does not increase eVO2max. This trial was registered at clinicaltrials.gov as NCT03002090.

Comparison of leucine kinetics in endurance-trained and sedentary humans

1999 ◽  
Vol 86 (1) ◽  
pp. 320-325 ◽  
Author(s):  
Linda S. Lamont ◽  
Arthur J. McCullough ◽  
Satish C. Kalhan
Keyword(s):  
Body Weight ◽  
Oxygen Consumption ◽  
Maximal Oxygen Consumption ◽  
Kinetic Studies ◽  
Fat Free Mass ◽  
Whole Body ◽  
Tissue Mass ◽  
Cross Sectional ◽  
Leucine Oxidation ◽  
Leucine Kinetics

Whole body leucine kinetics was compared in endurance-trained athletes and sedentary controls matched for age, gender, and body weight. Kinetic studies were performed during 3 h of rest, 1 h of exercise (50% maximal oxygen consumption), and 2 h of recovery. When leucine kinetics were expressed both per unit of body weight and per unit of fat-free mass, both groups demonstrated an increase in leucine oxidation during exercise ( P < 0.01). Trained athletes had a greater leucine rate of appearance during exercise and recovery compared with their sedentary counterparts ( P < 0.05) and an increased leucine oxidation at all times on the basis of body weight ( P < 0.05). However, all of these between-group differences were eliminated when leucine kinetics were corrected for fat-free tissue mass. Therefore, correction of leucine kinetics for fat-free mass may be important when cross-sectional investigations on humans are performed. Furthermore, leucine oxidation, when expressed relative to whole-body oxygen consumption during exercise, was similar between groups. It is concluded that there was no difference between endurance-trained and sedentary humans in whole body leucine kinetics during rest, exercise, or recovery when expressed per unit of fat-free tissue mass.

Students’ School Uniform Based on Body Height and Weight in Liaoning Area

2011 ◽  
Vol 175-176 ◽  
pp. 917-922
Author(s):  
Hong Mu ◽  
Xin Lu
Keyword(s):  
Body Weight ◽  
University Students ◽  
Body Height ◽  
Regression Equation ◽  
The Body ◽  
School Uniforms ◽  
Waist Girth ◽  
Size Standard ◽  
School Uniform ◽  
Chest Girth

When an enterprise produces school uniforms, it often takes the clothing specification and size based on the students’ height and weight as the basic information. This kind of method relys on the experience, it is difficult to meet the developing requirement of clothing digitization. This paper analyzes characteristics of the male university students’ bodies in Liaoning area, based on the survey of 270 university students’ bodies, in which 15 body measures were taken. The body characteristics and the data distribution of these people were obtained according to the national clothing size standard. Through the regression analysis of the body height to 4 lengths, such as the cervical vertebral height, the sleeve length and so on, and the chest girth to 8 girths, the key measures are obtained and the regression equation is established. The multivariate analysis based on the height and the weight proves that the waist girth is mostly influenced. Through the regression equation of the waist girth to the height and the body weight, the influence of body weight change on the waist girth with a certain height can be obtained, and the chest girth and the hip girth as well. It’s helpful to determine the size specification of the school uniform. This research also provides a reference to digitizing of the clothing design and manufacture.

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