Anaerobic threshold and critical velocity parameters determined by specific tests of canoe slalom: Effects of monitored training

Manchado-Gobatto, Fúlvia de Barros; Vieira, Nathália Arnosti; Messias, Leonardo Henrique Dalcheco; Ferrari, Homero Gustavo; Borin, João Paulo; Andrade, V. de Carvalho; Terezani, Denis Roberto

doi:10.1016/j.scispo.2014.04.006

Cited by 12 publications

(12 citation statements)

References 2 publications

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“…Regarding the bissegmentation method (i.e. two-segment linear fit) [ 8 , 9 ], blood lactate concentration was plotted against power and the lactate breakpoint was visually identified by three independent and experienced researchers; subsequently, the AnT (AnT Inc-Biss ) was determined by the intersection of the two linear fit. The blood lactate concentration at anaerobic threshold intensity ([Lac] AnT-Inc-Biss ) was calculated by linear interpolation.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, the AnT is identified during an incremental protocol based on the non-linear increase or a distinct change in the inclination of blood lactate curve [ 6 , 7 ]. Although mathematical procedures like bissegmentation of two linear regressions [ 8 , 9 ], fixed blood lactate concentration [ 10 ] or maximal perpendicular distance [ 11 ] were proposed and extensively used to overcome disadvantages of the visual identification [ 12 ], criticism still persists regarding the AnT determination during the incremental protocol [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience

2018

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Our first aim was to compare the anaerobic threshold (AnT) determined by the incremental protocol with the reverse lactate threshold test (RLT), investigating the previous cycling experience effect. Secondarily, an alternative RLT application based on heart rate was proposed. Two groups (12 per group-according to cycling experience) were evaluated on cycle ergometer. The incremental protocol started at 25 W with increments of 25 W at each 3 minutes, and the AnT was calculated by bissegmentation, onset of blood lactate concentration and maximal deviation methods. The RLT was applied in two phases: a) lactate priming segment; and b) reverse segment; the AnT (AnTRLT) was calculated based on a second order polynomial function. The AnT from the RLT was calculated based on the heart rate (AnTRLT-HR) by the second order polynomial function. In regard of the Study 1, most of statistical procedures converged for similarity between the AnT determined from the bissegmentation method and AnTRLT. For 83% of non-experienced and 75% of experienced subjects the bias was 4% and 2%, respectively. In Study 2, no difference was found between the AnTRLT and AnTRLT-HR. For 83% of non-experienced and 91% of experienced subjects, the bias between AnTRLT and AnTRLT-HR was similar (i.e. 6%). In summary, the AnT determined by the incremental protocol and RLT are consistent. The AnT can be determined during the RLT via heart rate, improving its applicability. However, future studies are required to improve the agreement between variables.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience

2018

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“…Penalties of 2-50 s are incurred if the athlete touches or fails to negotiate any gate correctly [23]. Originating in 1932, until recently, few scientific studies had been performed to evaluate the physiological [1,19,26], psychological [17,22,28] or biomechanical parameters [13], as well as the variability in official races [23]. Requiring unique movements and, consequently, specific metabolic demand, lactic acid metabolism is predominant (29.9 %) compared to alactic (24.9 %) metabolism during simulated canoe slalom races and, when linked, shows predominance over aerobic metabolism (45.2 %) [29].…”

Section: Introduction ▼mentioning

confidence: 99%

All-out Test in Tethered Canoe System can Determine Anaerobic Parameters of Elite Kayakers

Messias¹,

Ferrari²,

Sousa³

et al. 2015

Int J Sports Med

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The aims of this study were to use a specific all-out 30-sec tethered test to determine the anaerobic parameters in elite kayakers and verify the relationship between these results and sports performance. Twelve elite slalom kayakers were evaluated. The tethered canoe system was created and used for the all-out 30-sec test application. Measurements of peak force, mean force, minimum force, fatigue index and impulse were performed. Performance evaluation was determined by measuring the time of race in a simulated race containing 24 gates on a white-water course. Blood was collected (25-µl) for analysis of lactate concentration at rest and at 2, 4, 6, 8 and 10-min intervals after both the all-out test and the simulated race. The Pearson product moment correlation shows a inverse and significant relationship of peak force, mean force and impulse with time of race. Blood lactate concentrations after the all-out test and the simulated race peak at same time (4 min). Additionally, no interaction was visualized between time and all-out test/simulated race for blood lactate concentrations (P <0.365). These results suggest a relationship between the parameters of the all-out test and performance. Thus, the tethered canoe system is a useful tool for determining parameters that could be used in training control of slalom kayakers.

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“…Despite recent reports from our group addressing various issues related to the canoe slalom [ 9 , 30 , 33 – 34 ], no study has investigated the relevance of slalom kayaker’s paddle strokes on total force development. To address this, here we describe a significant relationship between the force parameters with both the number of paddle strokes and stroke frequency.…”

Section: Discussionmentioning

confidence: 99%

Novel paddle stroke analysis for elite slalom kayakers: Relationship with force parameters

et al. 2018

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This study was divided into two complementary parts. In Part 1, we proposed a novel paddle strokes analysis based on the force signal from a 30-s all-out tethered test; and compared these results with video recordings. In Part 2, we investigated the relationship between force data from the same test with paddle stroke results from both methods. Eleven male elite slalom kayakers (Brazilian national team) were evaluated. The tethered test was conducted for force parameters analysis (peak-force, mean-force, impulse). Video recording analysis was conducted, and the performed strokes (V.NumberPaddle) was counted and frequency (V.FrequencyPaddle) calculated by the V.NumberPaddle divided by 30 (i.e. total time of test). The new method consisted of performed strokes and frequency achievement from a load cell force signal analysis (S.NumberPaddle and S.FrequencyPaddle, respectively). Paired test-t did not show difference between methods results, but significant correlations were only obtained for the number of paddle strokes. Force parameters were only correlated with S.NumberPaddle and S.FrequencyPaddle. Overall, considering the theoretical and practical application, we propose that the new method should be used as an alternative to the video recording.

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Anaerobic threshold and critical velocity parameters determined by specific tests of canoe slalom: Effects of monitored training

Cited by 12 publications

References 2 publications

Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience

Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience

All-out Test in Tethered Canoe System can Determine Anaerobic Parameters of Elite Kayakers

Novel paddle stroke analysis for elite slalom kayakers: Relationship with force parameters

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