Peak blood lactate after short periods of maximal treadmill running

1982 ◽  
Vol 48 (3) ◽  
pp. 289-296 ◽  
Author(s):  
Noriaki Fujitsuka ◽  
Teruo Yamamoto ◽  
Tetsuo Ohkuwa ◽  
Mitsuru Saito ◽  
Miharu Miyamura
Keyword(s):  
Blood Lactate ◽  
Treadmill Running ◽  
Peak Blood ◽  
Peak Blood Lactate

Power and peak blood lactate at 5050 m with 10 and 30 s ‘all out’ cycling

2001 ◽  
Vol 172 (3) ◽  
pp. 189-194 ◽  
Author(s):  
B. Grassi ◽  
P. Mognoni ◽  
M. Marzorati ◽  
S. Mattiotti ◽  
C. Marconi ◽  
...  
Keyword(s):  
Blood Lactate ◽  
Peak Blood ◽  
Peak Blood Lactate

scholarly journals Do Performance Parameters Compare Between an Anaerobic Set and the 100-M Event in Swimming?

Proceedings ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 34
Author(s):  
Terzi ◽  
Skari ◽  
Nikolaidis ◽  
Papadimitriou ◽  
Kabasakalis ◽  
...  
Keyword(s):  
Blood Lactate ◽  
Short Distance ◽  
Statistical Significance ◽  
Stroke Index ◽  
Performance Parameters ◽  
Training Set ◽  
Time Test ◽  
Competitive Swimmers ◽  
Peak Blood ◽  
Peak Blood Lactate

AIM: Anaerobic interval sets are commonly used in the training program of swimmers competing in short-distance events. However, data regarding the way that these sets compare to the competitive events are lacking. The aim of this study was to examine if there are differences in speed, blood lactate, stroke rate (SR), and stroke index (SI) between an anaerobic set of 4 × 50 m maximal swimming with work-to-rest ratio of approximately 1:4 and the 100-m event in freestyle stroke. MATERIAL & METHOD: Twenty-seven competitive swimmers (11 males, 16 females), aged 16.1 ± 1.1 years, completed the two tests on different days, in a random counterbalanced order. In each test, blood lactate was measured before and repeatedly after exercise through a portable lactate analyzer. Time and SR were recorded for each 50 m of the tests, and speed and SI were subsequently calculated. Three-way analysis of variance (time × test × gender) and Pearson’s correlation analysis were used. The level of statistical significance was set at α = 0.05. RESULTS: Average speed was higher at 4 × 50 m compared to 100 m (1.62 ± 0.10 and 1.56 ± 0.10, respectively, p < 0.001) and was correlated between tests (r = 0.930, p < 0.001). Peak blood lactate after 4 × 50 m was higher compared to 100 m (14.8 ± 3.1 and 10.9 ± 3.3 mmol/L, respectively, p < 0.001) and was correlated between tests (r = 0.640, p < 0.001). Average SR was higher in 4 × 50 m compared to 100 m (47.0 ± 3.6 and 44.5 ± 3.2 cycles/min, respectively, p < 0.001) and was correlated between tests (r = 0.836, p < 0.001). Average SI did not differ but was correlated between tests (r = 0.937, p < 0.001). Males had higher SR and SI and were faster than females (p < 0.05) but did not differ from females regarding lactate. CONCLUSIONS: Based on the aforementioned differences and correlations, the 4 × 50 m training set could be used to improve the parameters that have impact on performance in the 100-m event.

The Assessment of Children’s Anaerobic Performance Using Modifications of the Wingate Anaerobic Test

1997 ◽  
Vol 9 (1) ◽  
pp. 80-89 ◽  
Author(s):  
Michael Chia ◽  
Neil Armstrong ◽  
David Childs
Keyword(s):  
Blood Lactate ◽  
Peak Power ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Mean Power ◽  
Wingate Anaerobic Test ◽  
Power Outputs ◽  
Anaerobic Test ◽  
Peak Blood ◽  
Peak Blood Lactate

Twenty-five girls and 25 boys (mean age 9.7 ± 0.3 years) each completed a 20- and 30-s Wingate Anaerobic Test (WAnT). Oxygen uptake during the WAnTs, and postexercise blood lactate samples were obtained. Inertia and load-adjusted power variables were higher (18.6–20.1% for peak, and 6.7–7.5% for mean power outputs, p < .05) than the unadjusted values for both the 20- and 30-s WAnTs. The adjusted peak power values were higher (7.7–11.6%, p < .05) in both WAnTs when integrated over 1-s than over 5-s time periods. The aerobic contributions to the tests were lower (p < .05) in the 20-s WAnT (13.7–35.7%) than in the 30-s WAnT (17.7–44.3%) for assumed mechanical efficiencies of 13% and 30%. Postexercise blood lactate concentration after the WAnTs peaked by 2 min. No gender differences (p > .05) in anaerobic performances or peak blood lactate values were detected.

scholarly journals Energetic and Biomechanical Contributions for Longitudinal Performance in Master Swimmers

2020 ◽  
Vol 5 (2) ◽  
pp. 37
Author(s):  
Daniel A. Marinho ◽  
Maria I. Ferreira ◽  
Tiago M. Barbosa ◽  
José Vilaça-Alves ◽  
Mário J. Costa ◽  
...  
Keyword(s):  
Blood Lactate ◽  
Swimming Performance ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Stroke Index ◽  
Front Crawl ◽  
Stroke Length ◽  
Propelling Efficiency ◽  
Peak Blood ◽  
Peak Blood Lactate

Background: The current study aimed to verify the changes in performance, physiological and biomechanical variables throughout a season in master swimmers. Methods: Twenty-three master swimmers (34.9 ± 7.4 years) were assessed three times during a season (December: M1, March: M2, June: M3), in indoor 25 m swimming pools. An incremental 5 × 200 m test was used to evaluate the speed at 4 mmol·L−1 of blood lactate concentration (sLT), maximal oxygen uptake (VO2max), peak blood lactate ([La-]peak) after the test, stroke frequency (SF), stroke length (SL), stroke index (SI) and propelling efficiency (ηp). The performance was assessed in the 200 m front crawl during competition. Results: Swimming performance improved between M1, M2 (2%, p = 0.03), and M3 (4%, p < 0.001). Both sLT and VO2max increased throughout the season (4% and 18%, p < 0.001, respectively) but not [La-]peak. While SF decreased 5%, SL, SI and ηp increased 5%, 7%, and 6% (p < 0.001) from M1 to M3. Conclusions: Master swimmers improved significantly in their 200 m front crawl performance over a season, with decreased SF, and increased SL, ηp and SI. Despite the improvement in energetic variables, the change in performance seemed to be more dependent on technical than energetic factors.

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