Assessment of Child-Specific Aerobic Fitness and Anaerobic Capacity by the Use of the Power-Time Relationships Constants

2010 ◽  
Vol 22 (3) ◽  
pp. 454-466 ◽  
Author(s):  
Erwan Leclair ◽  
Benoit Borel ◽  
Delphine Thevenet ◽  
Georges Baquet ◽  
Patrick Mucci ◽  
...  

This study first aimed to compare critical power (CP) and anaerobic work capacity (AWC), to laboratory standard evaluation methods such as maximal oxygen uptake (V̇O2max) and maximal accumulated oxygen deficit (MAOD). Secondly, this study compared child and adult CP and AWC values. Subjects performed a maximal graded test to determine V̇O2max and maximal aerobic power (MAP); and four constant load exercises. In children, CP (W.kg−1) was related to V̇O2max (ml.kg−1.min−1; r = .68; p = .004). AWC (J.kg−1) in children was related to MAOD (r = .58; p = .018). Children presented lower AWC (J.kg−1; p = .001) than adults, but similar CP (%MAP) values. CP (%MAP and W.kg−1) and AWC (J.kg−1) were significantly related to laboratory standard evaluation methods but low correlation indicated that they cannot be used interchangeably. CP (%MAP) was similar in children and adults, but AWC (J.kg−1) was significantly lower in children. These conclusions support existing knowledge related to child-adults characteristics.

2021 ◽  
Vol 35 (1) ◽  
pp. 97-101 ◽  
Author(s):  
M. Travis Byrd ◽  
Brian J. Wallace ◽  
Jody L. Clasey ◽  
Haley C. Bergstrom

1996 ◽  
Vol 21 (5) ◽  
pp. 391-402 ◽  
Author(s):  
Francis X. Pizza ◽  
Thomas A. Naglieri ◽  
Robert W. Holtz ◽  
Joel B. Mitchell ◽  
Raymond D. Starling ◽  
...  

The primary purpose of the study was to compare maximal accumulated oxygen deficit (MAOD) in resistance-trained (RT), endurance-trained (ET), and untrained men (UT). A secondary purpose was to determine the influence of leg muscle mass (MM) on MAOD by examining the relationship between MM and MAOD and by comparing MAOD expressed relative to MM between the groups. MAOD was determined during 2-4 min of constant-load fatiguing cycling. MM, estimated via anthropometric measurements, was higher (p <.05) for RT (mean ± SE; 25.5 ± 3.4 kg) compared to ET (20.3 ± 3.5) and UT (21.6 ± 3.4). MAOD in liters O2 eq was larger in RT (4.75 ± 0.3) compared to UT (3.07 ± 0.3) and ET (3.75 ± 0.3). A significant positive correlation was observed between MAOD (LO2 eq) and MM (kg) for RT only (RT, r =.85; ET, r =.55; UT, r =.20). Based on the correlational and mean MM data, the higher MAOD (LO2 eq) in RT relative to ET and UT is predominantly the result of their larger leg muscle mass. Key words: exercise, anaerobic capacity, muscle mass


2005 ◽  
Vol 30 (6) ◽  
pp. 735-742 ◽  
Author(s):  
Jean-Pierre Pouilly ◽  
Michel Chatagnon ◽  
Vincent Thomas ◽  
Thierry Busso

This study aimed to estimate the power/time relationship from a single ramp test (RT) assuming critical power (Pc) from ventilatory threshold (VT) and energy reserve (W') from total work during RT. These estimates from single RT were compared to those from a series of 4 constant power exercises (CPT) and from a series of 4 RT. Only W' from CPT was higher than from the series of RT and from single RT using VT (p <  0.05). Key words: exercise testing, critical power, anaerobic work capacity, cycle ergometry


2012 ◽  
Vol 26 (3) ◽  
pp. 656-663 ◽  
Author(s):  
Haley C Bergstrom ◽  
Terry J Housh ◽  
Jorge M Zuniga ◽  
Clayton L Camic ◽  
Daniel A Traylor ◽  
...  

2008 ◽  
Vol 23 (5) ◽  
pp. 244-247 ◽  
Author(s):  
F.Y. Nakamura ◽  
G. Pereira ◽  
D.W. Hill ◽  
S. Berthoin ◽  
E. Kokubun

2020 ◽  
Vol 98 (1) ◽  
pp. 23-28
Author(s):  
Gustavo Gomes de Araujo ◽  
Sara Learsi ◽  
Victor José Bastos-Silva ◽  
Terezinha Ataide ◽  
Adriano Eduardo Lima-Silva

The effect of chronic metformin intake on aerobic and anaerobic capacity was examined in healthy rats. Twenty rats completed 10 days of metformin (MET) ingestion (250 mg). After this period, the animals performed four high-intensity bouts until exhaustion at 9%, 11%, 13%, and 15% of body mass (BM) in swimming, separated by 24 h, with prior metformin (250 mg) or placebo (PL). The critical load (CL) and anaerobic work capacity (AWC – W′) were calculated and considered aerobic and anaerobic capacity, respectively. There was no difference in CL between the MET and PL groups (p > 0.05). The AWC – W′ was higher in the MET group than in the PL group (p = 0.004). Time until exhaustion (seconds) at all bouts were higher (p < 0.004) in the MET group (9% of BM = 434.5 ± 267.3, 11% of BM = 269.6 ± 214.2, 13% of BM = 174.0 ± 40.9, 15% of BM = 146.6 ± 15.9) compared to the PL group (9% of BM = 96.4 ± 22.3, 11% of BM = 65.5 ± 13.4, 13% of BM = 51.1 ± 5.5, 15% of BM = 40.8 ± 7.5). Glucose concentration was higher at 90 and 120 min than at 0 and 30 min for the MET group (intragroup) during the oral glucose test tolerance; there was no difference between the MET and PL groups for area under curve. MET ingestion enhances AWC – W′ and times to exhaustion but not aerobic capacity.


2018 ◽  
Vol 13 (2) ◽  
pp. 189-193 ◽  
Author(s):  
M. Travis Byrd ◽  
Jonathan Robert Switalla ◽  
Joel E. Eastman ◽  
Brian J. Wallace ◽  
Jody L. Clasey ◽  
...  

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