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E-16 Thematic Poster - Soccer Friday, June 3, 2016, 9: 30 AM - 11: 30 AM Room: 110

Effect of Rest Time in Sprint Training in Young Soccer Players

2433 Board #5 June 3, 9

30 AM - 11

30 AM

Mazza, Juan C.; Festa, Raúl R.; Groppo, Carlos; Ruffo, Lisandro; Maggiolo, Lucas; Mangione, Pablo; Cosolito, Patricia; Grossi, Gustavo

Author Information
Medicine & Science in Sports & Exercise: May 2016 - Volume 48 - Issue 5S - p 667
doi: 10.1249/01.mss.0000487002.73788.d2
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Sprint Training in Soccer is a determinant component in performance therefore ATP-PCr energy system has a critical role in the competition for high intensity actions. Its suggest ATP-PCr energy system should be trained with the highest specificity for correct adaptation and support sprint performance.

PURPOSE: To determine an effective rest time for repeated sprint ability training without decreased in performance (speed) during bout’s sequence.

METHODS: 15 male soccer’s players (17.7±0.5 years) performed 2 sprint of 4 sets (4 rep. x 30-m) all-out bouts, in 2 different days, with 5-days rest between bouts. Sprint protocols were: a)- 4 sets (4 reps. x 30-m) with 60-second and 3-minutes rest, between reps and sets, respectively (ATP-PCr1); b)- 4 sets (4 reps. x 30-m) with 30-second and 3-minutes rest, between reps and sets, respectively (ATP-PCr2). We register time of each rep. (sec., measured by photocells), blood lactate levels (La) and heart rate (HR), at the end of the set. A two-way repeated measurement ANOVAs was performed to determine statistical differences (SD) at p < 0.05. When we detect SD in any ANOVA analysis, we apply Tuckey Test to determine which variables are different.

RESULTS: We find no SD between 1-2-3-4 set’s speed (m/sec) in ATP-PCr1 or ATP-PCr2, respectively. However, exists SD (p<0,05) between ATP-PCr1 vs. ATP-PCr2 in speed (7.017±0.448 vs. 6.820±0.225 m/sec., respectively); La (5.96±1.62 vs. 5.30±1.44 mMol/l., respectively); and HR (166.43±11.41 vs. 170.35±11.35 bpm, respectively).

Additionally, we find a low correlation coefficient (r) between La and HR values in each test (ATP-PCr1: r=0,50; ATP-PCr2: r=0,52).

CONCLUSION: The main conclusions of the present study are three-fold: 1) Decrease speed’s performance in ATP-PCr2, influenced by shorter rest time, hypothetically for less PCr rephosphorylate rate; 2) La level is higher in ATP-PCr1 for significant high speed (assuming more elevated glycolitic rate); 3) Evidence for low r between La vs. HR, showing that HR is not a valid and reproducible variable to control intensity of sprint training.

© 2016 American College of Sports Medicine