CONCLUSIONS: Submax Yo-Yo tests performed with CP football players showed a high reproducibility and strong sensitivity. Therefore, submaximal Yo-Yo tests can be used to monitor physical performance in CP football players. Age (yrs)
22.8±3.2 -1
Hrmax (b·min )
187.2±7.0
%Hrmax
93.6±4.0 -1
HRR75sec (b·min )
34.8±9.7
Hrsubmax 1 (b·min-1)
175.4±9.9
Hrsubmax 2 (b·min-1)
175.2±8.0
-1
Δ(beats·min )
-0.2±3.9
R2 (submax 1 vs. 2)
0.86
1904
Board #6 June 1 3:15 PM - 5:15 PM Validation Of The 3-min All-out Exercise Test For Shuttle Running Prescription Anssi Saari1, Robert Pettitt, FACSM2, Nathan Dicks2, Mark Hartman2. 1University of Kentucky, Lexington, KY. 2Minnesota State University, Mankato, Mankato, MN. Email:
[email protected] (No relationships reported)
A 3-min all-out exercise test (3MT) for running has been developed to determine critical speed (CS) and finite capacity for running speeds >CS (D’) to predict time limits (TLIMs) and it can be utilized for prescribing interval training; however, the 3MT has not been validated for shuttle running, which is required in most team sports. PURPOSE: To examine the efficacy of shuttle running 3MT to determine CS and D’. METHODS: A total of 12 subjects were tested using an all-out 3MT along with three separate all-out distance time-trials (600, 810 and 1020 m) in a 30 m distance shuttle. Average speed during the 3MT for each 10 m distance and times for each time-trial was recorded. 3MT was used to calculate predicted CS, D’ and T LIMs. The 3 time-trials were used to determine true CS and D’ using D-t, and 1/t models. Within-group analyses of CS and D’ from the 3MT, D-t, and 1/t models were evaluated using a series of one-way analyses of variance (ANOVA) with repeated measures. Actual and predicted times for the 3 distances were evaluated with a 2 X 3 ANOVA with repeated measures. RESULTS: The 3MT (2.94 ± 0.39 m·s-1) and the true CS (3.00 ± 0.36 m·s-1) for shuttle running did not differ (p = 0.71) and had a coefficient of variation (CV) of 7.7%. Conversely, D’ from the 3MT exceeded true D’ by 42 m (p = 0.04, CV = 36%). The TLIMs estimated for the 3 different distances were within ~2 to 6% (p = 0.60). CONCLUSIONS: The shuttle run 3MT may offer a suitable method for predicting CS and T LIMs and prescribing shuttle running interval training.
1905
Board #7 June 1 3:15 PM - 5:15 PM Maximal Oxygen Consumption Predicts Skeletal and Heart Muscle Biomarkers Changes after a Full Distance Ironman Tom Danielsson, Jörg Carlsson, Patrick Bergman. Linnaeus University, Kalmar, Sweden. Email:
[email protected] (No relationships reported)
Strenuous exercise like marathon or triathlon leads to disturbances of several biomarkers, not at least markers of skeletal and heart muscle damage. Different predictors of biomarker changes, e.g. sex, age and training experience have been discussed in the literature with contradictory results. To our best knowledge, maximal oxygen consumption (VO2 max) has not been investigated in this setting. PURPOSE: To evaluate predictors of biomarker changes in an Ironman triathlon. METHODS: In 39 non-elite athletes (10 female, 29 male; age 41.1 ± 9.7, range 24-70 years) who had performed a 20 m shuttle run test to predict VO2 max, biomarkers (cardiac troponin T (cTnT; reference < 14 ng/L), creatine kinase (CK; ref. < 1.9 µkat/L), myoglobin (MG; ref.
