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Effect of the number of sprint repetitions on the variation of blood lactate concentration in repeated sprint sessions.

Gharbi Z, Dardouri W, Haj-Sassi R, Castagna C, Chamari K, Souissi N - Biol Sport (2014)

Bottom Line: No significant difference was found between RSS3, RSS4 and RSS5 for the percentage of sprint speed decrement (Sdec) (1.5±1.2; 2.0±1.1 and 2.6±1.4%, respectively).There was also no significant difference between RSS9 and RSS10 for Sdec (3.9±1.3% and 4.5±1.4%, respectively).In conclusion, the repeated-sprint protocol composed of 5 shuttle sprint repetitions is more representative of the blood lactate demands of the team sports game intensity.

View Article: PubMed Central - PubMed

Affiliation: Tunisian Research Laboratory "Sport Performance Optimisation", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia ; High Institute of Sports and Physical Education, University of Gafsa, Gafsa, Tunisia.

ABSTRACT
The aim of the present study was to examine the effect of number of sprint repetitions on the variation of blood lactate concentration (blood [La]) during different repeated-sprint sessions in order to find the appropriate number of sprint repetitions that properly simulates the physiological demands of team sport competitions. Twenty male team-sport players (age, 22.2 ± 2.9 years) performed several repeated-sprint sessions (RSS) consisting of 1, 2, 3, 4, 5, 9, or 10 repetitions of 30 m shuttle sprints (2 × 15 m) with 30 s recovery in between. The blood [La] was obtained after 3 min of recovery at the end of each RSS. The present study showed that for RSS of 3 sprints (RSS3) there was a high increase (p<0.001) in blood [La], which reached approximately fivefold resting values (9.4±1.7 mmol · l(-1)) and then remained unchanged for the RSS of 4 and 5 sprints (9.6±1.4 and 10.5±1.9 mmol · l(-1), p=0.96 and 0.26, respectively). After RSS9 and RSS10 blood [La] further significantly increased to 12.6 and 12.7 mmol · l(-1), p<0.001, respectively. No significant difference was found between RSS3, RSS4 and RSS5 for the percentage of sprint speed decrement (Sdec) (1.5±1.2; 2.0±1.1 and 2.6±1.4%, respectively). There was also no significant difference between RSS9 and RSS10 for Sdec (3.9±1.3% and 4.5±1.4%, respectively). In conclusion, the repeated-sprint protocol composed of 5 shuttle sprint repetitions is more representative of the blood lactate demands of the team sports game intensity.

No MeSH data available.


Related in: MedlinePlus

MEAN AND ± SD VALUES FOR BLOOD LACTATE CONCENTRATION (BLOOD [LA]) (COLUMNS) AND THE PERCENTAGE SPEED DECREMENT (SDEC) (LINE) ACHIEVED AFTER REPEATED-SPRINT SESSIONS (RSS) WITH 1, 2, 3, 4, 5, 9 AND 10 SPRINTSNote: *: no significant difference in blood [La]. †: no significant difference in Sdec
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Figure 0001: MEAN AND ± SD VALUES FOR BLOOD LACTATE CONCENTRATION (BLOOD [LA]) (COLUMNS) AND THE PERCENTAGE SPEED DECREMENT (SDEC) (LINE) ACHIEVED AFTER REPEATED-SPRINT SESSIONS (RSS) WITH 1, 2, 3, 4, 5, 9 AND 10 SPRINTSNote: *: no significant difference in blood [La]. †: no significant difference in Sdec

Mentions: The blood [La] and Sdec achieved after repeated-sprint sessions (RSS) with 1, 2, 3, 4, 5, 9, and 10 sprints are presented in Figure 1. The averaged blood [La] measured after completion of one repetition of 15 + 15 m sprint increased from a pre-exercise value of 1.8±0.6 mmol · l−1 to 4.7±1.5 mmol · l−1 and was not different from the blood [La] of RSS with 2 repetitions (RSS2) (5.7±1.2 mmol · l−1, p =0.80).


Effect of the number of sprint repetitions on the variation of blood lactate concentration in repeated sprint sessions.

Gharbi Z, Dardouri W, Haj-Sassi R, Castagna C, Chamari K, Souissi N - Biol Sport (2014)

MEAN AND ± SD VALUES FOR BLOOD LACTATE CONCENTRATION (BLOOD [LA]) (COLUMNS) AND THE PERCENTAGE SPEED DECREMENT (SDEC) (LINE) ACHIEVED AFTER REPEATED-SPRINT SESSIONS (RSS) WITH 1, 2, 3, 4, 5, 9 AND 10 SPRINTSNote: *: no significant difference in blood [La]. †: no significant difference in Sdec
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042663&req=5

Figure 0001: MEAN AND ± SD VALUES FOR BLOOD LACTATE CONCENTRATION (BLOOD [LA]) (COLUMNS) AND THE PERCENTAGE SPEED DECREMENT (SDEC) (LINE) ACHIEVED AFTER REPEATED-SPRINT SESSIONS (RSS) WITH 1, 2, 3, 4, 5, 9 AND 10 SPRINTSNote: *: no significant difference in blood [La]. †: no significant difference in Sdec
Mentions: The blood [La] and Sdec achieved after repeated-sprint sessions (RSS) with 1, 2, 3, 4, 5, 9, and 10 sprints are presented in Figure 1. The averaged blood [La] measured after completion of one repetition of 15 + 15 m sprint increased from a pre-exercise value of 1.8±0.6 mmol · l−1 to 4.7±1.5 mmol · l−1 and was not different from the blood [La] of RSS with 2 repetitions (RSS2) (5.7±1.2 mmol · l−1, p =0.80).

Bottom Line: No significant difference was found between RSS3, RSS4 and RSS5 for the percentage of sprint speed decrement (Sdec) (1.5±1.2; 2.0±1.1 and 2.6±1.4%, respectively).There was also no significant difference between RSS9 and RSS10 for Sdec (3.9±1.3% and 4.5±1.4%, respectively).In conclusion, the repeated-sprint protocol composed of 5 shuttle sprint repetitions is more representative of the blood lactate demands of the team sports game intensity.

View Article: PubMed Central - PubMed

Affiliation: Tunisian Research Laboratory "Sport Performance Optimisation", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia ; High Institute of Sports and Physical Education, University of Gafsa, Gafsa, Tunisia.

ABSTRACT
The aim of the present study was to examine the effect of number of sprint repetitions on the variation of blood lactate concentration (blood [La]) during different repeated-sprint sessions in order to find the appropriate number of sprint repetitions that properly simulates the physiological demands of team sport competitions. Twenty male team-sport players (age, 22.2 ± 2.9 years) performed several repeated-sprint sessions (RSS) consisting of 1, 2, 3, 4, 5, 9, or 10 repetitions of 30 m shuttle sprints (2 × 15 m) with 30 s recovery in between. The blood [La] was obtained after 3 min of recovery at the end of each RSS. The present study showed that for RSS of 3 sprints (RSS3) there was a high increase (p<0.001) in blood [La], which reached approximately fivefold resting values (9.4±1.7 mmol · l(-1)) and then remained unchanged for the RSS of 4 and 5 sprints (9.6±1.4 and 10.5±1.9 mmol · l(-1), p=0.96 and 0.26, respectively). After RSS9 and RSS10 blood [La] further significantly increased to 12.6 and 12.7 mmol · l(-1), p<0.001, respectively. No significant difference was found between RSS3, RSS4 and RSS5 for the percentage of sprint speed decrement (Sdec) (1.5±1.2; 2.0±1.1 and 2.6±1.4%, respectively). There was also no significant difference between RSS9 and RSS10 for Sdec (3.9±1.3% and 4.5±1.4%, respectively). In conclusion, the repeated-sprint protocol composed of 5 shuttle sprint repetitions is more representative of the blood lactate demands of the team sports game intensity.

No MeSH data available.


Related in: MedlinePlus