year 9, Issue 2 (Summer 2021)                   Ann Appl Sport Sci 2021, 9(2): 0-0 | Back to browse issues page

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Kramer M, Thomas E J, Van Aswegen M. Functional Speed Reserve as a Proxy for the Anaerobic Speed Reserve Using the Critical Speed Concept. Ann Appl Sport Sci 2021; 9 (2)
1- Physical Activity, Sport, and Recreation (PhASRec) Unit, North West University, Potchefstroom, South Africa ,
2- Human Movement Science Department, Nelson Mandela University, Port Elizabeth, South Africa
3- Physical Activity, Sport, and Recreation (PhASRec) Unit, North West University, Potchefstroom, South Africa
Abstract:   (3587 Views)
Background: Although maximal sprint speed (MSS) and the anaerobic speed reserve (ASR) provides valuable information about the speed profile of athletes, these parameters fall short of providing important information about sub-maximal metabolic thresholds. The only field test that can offer an estimate of a sub-maximal metabolic threshold is the 3-minute all-out test for running (3MT) which delivers three parameters of interest: the critical speed (CS), fatiguability constant (D’), and 3MT-specific maximal running speed (MS3MT).
Objectives: We offer an alternative to the ASR, termed the ‘functional’ speed reserve (FSR), and therefore the purpose of this study was two-fold: firstly to compare MSS to MS3MT and FSR to ASR, and secondly, to determine the correlations between ASR, FSR, and D’.
Methods: Thirty-two participants volunteered for the study (age: 22.50 ± 4.32 years; height: 1.67 ± 0.78 m; body mass: 66.58 ± 11.30 kg) and completed a graded exercise test (GXT), 3MT, and 40-m sprint test following familiarisation bouts for each test.
Results: MSS and MS3MT were strongly correlated (r=0.93, p<0.001). The ASR and FSR were also strongly correlated (r=0.77, p<0.05), with the FSR also showing a strong correlation with D’ (r=0.77, p<0.05).
Conclusion: The 3MT provides a viable, arguably more ecological alternative to the ASR (i.e. FSR), and provides additional parameters such as CS, D’, and MS3MT. Field testing based on the 3MT can offer coaches and athletes unique performance insights and tools to effectively program and prescribe training interventions.
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  • Parameters from the 3MT provide viable surrogates for MSS and ASR but more importantly, also provide valuable information regarding the critical metabolic threshold and fatigability constant in a much more time-efficient manner (i.e. a relatively straightforward 3-minute test).

Type of Study: Original Article | Subject: Sport Physiology and its related branches
Received: 2020/09/8 | Accepted: 2020/11/4

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