Physiological responses at the anaerobic threshold and at peak performance during arm crank ergometer diagnostics compared to wheelchair propulsion on a treadmill in elite wheelchair basketball players

2019 ◽  
Vol 35 (1) ◽  
pp. 49-55
Author(s):  
Ann-Kathrin Otto ◽  
Rüdiger Reer ◽  
Birger Holtfreter ◽  
Helge Riepenhof ◽  
Jan Schröder
2017 ◽  
Vol 60 (1) ◽  
pp. 243-254 ◽  
Author(s):  
Bartosz Molik ◽  
Andrzej Kosmol ◽  
Natalia Morgulec-Adamowicz ◽  
Judit Lencse-Mucha ◽  
Anna Mróz ◽  
...  

AbstractIn wheelchair sports, aerobic performance is commonly assessed with the use of an arm crank ergometer (ACE), a wheelchair ergometer (WCE) or a wheelchair treadmill (WCT). There are different protocols to identify peak oxygen uptake in wheelchair sports; however, only a few protocols have been applied to evaluate these conditions in wheelchair basketball players. The purpose of this study was to compare physiological responses during maximal exercise testing with the use of ACE and WCT in wheelchair basketball players. Twelve elite male wheelchair basketball players participated in this study. The research was performed during a training camp of the Polish National Wheelchair Basketball Team. The study participants were divided into two functional categories: A (players with class 1.0 - 2.5) and B (players with class 3.0 - 4.5). Two main maximal exercise tests, i.e. wheelchair treadmill stress test (WCT test) and arm crank ergometer stress test (ACE test) were used to evaluate aerobic performance of the players. There were no statistically significant differences in aerobic tests between the players from both groups. The comparison of results achieved in two aerobic tests performed on WCT and ACE did not reveal any significant differences between the analyzed variables (peak heart rate (HRpeak), peak oxygen uptake (VO2peak), minute ventilation (VE), anaerobic threshold (AT), lactate concentration (LApeak), and a drop in lactate concentration (%LA)). Strong correlations between results achieved in WCT and ACE tests were found for VO2peak, VE and LApeak. The main conclusion of the study is that both WCT and ACE tests may be useful when determining aerobic capacity of wheelchair basketball players. Moreover, both protocols can be used by athletes regardless of their functional capabilities and types of impairment.


2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Thierry Weissland ◽  
Arnaud Faupin ◽  
Benoit Borel ◽  
Serge Berthoin ◽  
Pierre-Marie Leprêtre

A bioenergetical analysis of manoeuvrability and agility performance for wheelchair players is inexistent. It was aimed at comparing the physiological responses and performance obtained from the octagon multistage field test (MFT) and the modified condition in “8 form” (MFT-8). Sixteen trained wheelchair basketball players performed both tests in randomized condition. The levels performed (end-test score), peak values of oxygen uptake(VO2peak), minute ventilation(VEpeak), heart rate(HRpeak), peak and relative blood lactate (Δ[Lact−] = peak – rest values), and the perceived rating exertion (RPE) were measured. MFT-8 induced higherVO2peakandVEpeakvalues compared to MFT (VO2peak: 2.5 ± 0.6 versus 2.3 ± 0.6 L·min−1andVEpeak: 96.3 ± 29.1 versus 86.6 ± 23.4 L·min−1;P<0.05) with no difference in other parameters. Significant relations betweenVEpeakand end-test score were correlated for both field tests(P<0.05). At exhaustion, MFT attained incompletelyVO2peakandVEpeak. Among experienced wheelchair players, MFT-8 had no effect on test performance but generates higher physiological responses than MFT. It could be explained by demands of wheelchair skills occurring in 8 form during the modified condition.


Spinal Cord ◽  
1994 ◽  
Vol 32 (3) ◽  
pp. 196-201 ◽  
Author(s):  
A Rotstein ◽  
M Sagiv ◽  
D Ben-Sira ◽  
G Werber ◽  
J Hutzler ◽  
...  

1995 ◽  
Vol 12 (4) ◽  
pp. 344-361 ◽  
Author(s):  
Yeshayahu Hutzler ◽  
Martin Grunze ◽  
Rolf Kaiser

Eleven male elite wheelchair basketball players took part in an all-out, high-velocity, “Wingate”-type ergometric test lasting 30 s. An electrically braked and electronically controlled roller device was used to measure power and velocity. A breath-by-breath metabolic measurement cart collected net O2 uptake prior to, during, and after the test. Average braking load and velocity were 9.91 N · m and 5.09 m · s-1, respectively. Mean total work during the test was 4,468.47 ± 1,326 J. Based on net O2 cost and estimating a 10% efficiency, the aerobic contribution would be 29.8 ± 10.2%. Therefore, performance in this test seems to be predominantly anaerobic. Velocity variables of the subjects included in this study had a significant relationship to power variables and thus are considered valid for measuring peak performance, mean performance, and fatigue. A regression analysis utilizing wheel size and function as independent variables presented a significant relationship to peak velocity (P <.005). Further findings indicated variability in technique among subjects that led to training suggestions.


2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Elena Bergamini ◽  
Francesca Morelli ◽  
Flavia Marchetti ◽  
Giuseppe Vannozzi ◽  
Lorenzo Polidori ◽  
...  

As participation in wheelchair sports increases, the need of quantitative assessment of biomechanical performance indicators and of sports- and population-specific training protocols has become central. The present study focuses on junior wheelchair basketball and aims at (i) proposing a method to identify biomechanical performance indicators of wheelchair propulsion using an instrumented in-field test and (ii) developing a training program specific for the considered population and assessing its efficacy using the proposed method. Twelve athletes (10 M, 2 F, age = 17.1 ± 2.7 years, years of practice = 4.5 ± 1.8) equipped with wheelchair- and wrist-mounted inertial sensors performed a 20-metre sprint test. Biomechanical parameters related to propulsion timing, progression force, and coordination were estimated from the measured accelerations and used in a regression model where the time to complete the test was set as dependent variable. Force- and coordination-related parameters accounted for 80% of the dependent variable variance. Based on these results, a training program was designed and administered for three months to six of the athletes (the others acting as control group). The biomechanical indicators proved to be effective in providing additional information about the wheelchair propulsion technique with respect to the final test outcome and demonstrated the efficacy of the developed program.


2016 ◽  
Vol 22 (3) ◽  
pp. 124-132 ◽  
Author(s):  
Raphael N. Pereira ◽  
Marcos Fabio R. Abreu ◽  
Camila B. Gonçalves ◽  
Wilson Flávio S. Corrêa ◽  
Daniel R. Mizuhira ◽  
...  

2017 ◽  
Vol 29 (9) ◽  
pp. 1497-1501 ◽  
Author(s):  
Kenji Tsunoda ◽  
Hirotaka Mutsuzaki ◽  
Kazushi Hotta ◽  
Yukiyo Shimizu ◽  
Naruki Kitano ◽  
...  

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