Maximal Aerobic Power in Aging Men: Insights From a Record of 1-Hour Unaccompanied Cycling

2018 ◽  
Vol 13 (1) ◽  
pp. 112-114 ◽  
Author(s):  
Carlo Capelli

Purpose: To analyze best 1-h unaccompanied performances of master athletes in ages ranging from 35 to 105 y to estimate the decay of maximal aerobic power (MAP) across the spectrum of age. Methods: MAP at the various ages was estimated by computing the metabolic power () maintained to cover the distances during best 1-h unaccompanied performances established by master athletes of different classes of age and by assuming that they were able to maintain an equal to 88% of their MAP during 1 h of exhaustive exercise. Results: MAP started monotonically decreasing at 47 y of age. Thereafter, it showed an average rate of decrease of ∼14% for the decades up to 105 y of age, similar to other classes of master athletes. Conclusions: The results confirm, by extending the analysis to centennial subjects, that MAP seems to start declining from the middle of the 5th decade of age, with an average percentage decay that is faster than that traditionally reported, even when one maintains a very active lifestyle. The proposed approach may be applied to other types of human locomotion for which the relationship between speed and is known.

1990 ◽  
Vol 60 (4) ◽  
pp. 282-287 ◽  
Author(s):  
J. Rutenfranz ◽  
M. Máček ◽  
K. Lange Andersen ◽  
R. D. Bell ◽  
J. Vávra ◽  
...  

1997 ◽  
Vol 92 (4) ◽  
pp. 331-333 ◽  
Author(s):  
GIL Rodas ◽  
Guadalupe Ercilla ◽  
Casimiro Javierre ◽  
Eduardo Garrido ◽  
MAR Calvo ◽  
...  

1. The power of the aerobic metabolic pathway correlates well with successful physical performance in endurance sports events. The ability to alter the pathway through training presents well-known limitations, and consequently a good genetic endowment is essential to participate in elite sporting activities. 2. In 32 subjects (16 healthy pairs of male twin sportsmen, 8 monozygotic and 8 dizygotic) zygosity was determined by means of the genetic analysis of human leucocyte antigen (HLA) system specificities at class I and II loci and other genetic variants. The subjects performed a progressive exercise test on a treadmill to ascertain the maximal oxygen uptake (V̇O2max), measured by an automatic breath-by-breath analyser. We have considered the relationship between the A, B and C loci of the HLA system and V̇O2max. 3. We found a high correlation between the presence of both HLA A2 and All and V̇O2max. In the A2A11 group (n = 6) we found a V̇O2max (mean ± SD) equal to 71 ± 4 ml min−1 kg−1. The group without this pair of alleles (n = 26) showed a much lower aerobic power (58 ±5 ml min−1 kg−1). Differences between the two groups were found to be largely significant (P < 0.001). It is noteworthy that in two pairs of dizygotic twins, the higher V̇O2max value corresponded to the twin with the A2A11 allele. 4. The very marked concordance between the presence of the A2A11 locus of the HLA system and the V̇O2max could be of great interest for the identification of outstanding performers.


2000 ◽  
Vol 32 (6) ◽  
pp. 1165-1170 ◽  
Author(s):  
ROBERT A. WISWELL ◽  
S. VICTORIA JAQUE ◽  
TAYLOR J. MARCELL ◽  
STEVEN A. HAWKINS ◽  
KYLE M. TARPENNING ◽  
...  

Author(s):  
Dayan Ramly Ramadhan ◽  
Nur Rokhman

One of the problems in the promotion is the high cost. Identifying the customer segments that have made transactions, sellers can promote better products to potential consumers. The segmentation of potential consumers can be integrated with the products that consumers tend to buy. The relationship can be found using pattern analysis using the Association Rule Mining (ARM) method. ARM will generate rule patterns from the old transaction data, and the rules can be used for recommendations. This study uses a segmented-based sequential rule method that generates sequential rules from each customer segment to become product promotion for potential consumers. The method was tested by comparing product promotions based on rules and product promotions without based on rules. Based on the test results, the average percentage of transaction from product promotion based on rules is 2,622%, higher than the promotion with the latest products with an average rate of transactions only 0,315%. The hypothesis in each segment obtained from the sample can support the statement that product promotion in all segments based on rules can be more effective in increasing sales compared to promotions that use the latest products without using rules recommendations.


2016 ◽  
Vol 116 (7) ◽  
pp. 1395-1410 ◽  
Author(s):  
C. Capelli ◽  
J. Rittveger ◽  
P. Bruseghini ◽  
E. Calabria ◽  
E. Tam

2016 ◽  
Vol 116 (9) ◽  
pp. 1857-1857 ◽  
Author(s):  
C. Capelli ◽  
J. Rittweger ◽  
P. Bruseghini ◽  
E. Calabria ◽  
E. Tam

1991 ◽  
Vol 70 (3) ◽  
pp. 1016-1023 ◽  
Author(s):  
F. K. Lotgering ◽  
M. B. van Doorn ◽  
P. C. Struijk ◽  
J. Pool ◽  
H. C. Wallenburg

This study was to determine whether pregnancy affects maximal aerobic power. We measured heart rate, O2 uptake (VO2), CO2 production (VCO2), and ventilation at rest and during bicycle (BE) and treadmill exercise (TE) tests with rapidly increasing exercise intensities at 16, 25, and 35 wk gestation and 7 wk after delivery. Maximal heart rate was slightly lower throughout pregnancy compared with the nonpregnant state during both BE [174 +/- 2 vs. 178 +/- 2 (SE) beats/min] and TE (178 +/- 2 vs. 183 +/- 2 beats/min). Maximal VO2 was unaffected by pregnancy during BE and TE (2.20 +/- 0.08, 2.16 +/- 0.08, 2.15 +/- 0.08, and 2.19 +/- 0.08 l/min for BE and 2.45 +/- 0.08, 2.38 +/- 0.09, 2.33 +/- 0.09, and 2.39 +/- 0.08 l/min for TE at 16, 25, and 35 wk gestation and 7 wk postpartum, respectively). As a result of increased VO2 at rest, the amount of O2 available for exercise (exercise minus rest) tended to decrease with advancing gestation, reaching statistical significance only during TE at 35 wk gestation (1.99 +/- 0.08 l/min vs. 2.10 +/- 0.08 l/min postpartum). Power showed a positive linear correlation with O2 availability during BE as well as TE, and the relationship was unaffected by pregnancy.(ABSTRACT TRUNCATED AT 250 WORDS)


1995 ◽  
Vol 268 (3) ◽  
pp. E484-E490 ◽  
Author(s):  
R. E. Pratley ◽  
J. M. Hagberg ◽  
E. M. Rogus ◽  
A. P. Goldberg

The effect of long-term aerobic exercise training on insulin action was determined in older individuals by comparing insulin sensitivity and maximal responsiveness in 11 master athletes [63.5 +/- 1.9 (SE) yr] and 10 age- and body fat-matched sedentary individuals. Maximal aerobic power was higher and the waist-to-hip ratio (WHR) was lower in the athletes, but there were no differences in body weight, percent body fat, or fat-free mass between groups. Fasting plasma glucose levels and glucose and insulin responses during oral glucose tolerance tests were lower in the athletes. The insulin concentration producing a half-maximal increase in glucose disposal (EC50) during a three-step hyperinsulinemic-euglycemic glucose clamp was 41% lower in the athletes than in controls (483 +/- 30 vs. 822 +/- 132 pmol/l, P < 0.05), whereas maximal responsiveness was comparable (81.0 +/- 4.4 vs. 85.5 +/- 8.3 mumol.kg fat-free mass-1.min-1, P = not significant). The EC50 correlated with maximal aerobic power (r = -0.62, P < 0.01) and WHR (r = 0.52, P < 0.05), but in multiple regression analyses WHR was the only variable independently related to EC50. These results indicate that long-term aerobic exercise training is associated with enhanced insulin sensitivity and a lower WHR in older individuals. This finding suggests that regular aerobic exercise may prevent the age-associated increase in abdominal obesity and insulin resistance.


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