Anaerobic metabolism during short all-out efforts in tethered running: Comparison of energy expenditure and mechanical parameters between different sprint durations for testing

Author(s)

Barros Sousa, Filipe Antonio ^{[1, 2]} ; Vasque, Rubens Eduardo ^[1] ; Gobatto, Claudio Alexandre ^[1]

Affiliation

^[1] Univ Estadual Campinas, Sch Appl Sci, Limeira, SP - Brazil

^[2] Einstein Integrated Fac Limeira, Limeira - Brazil

• Document type: Journal article
• Source: PLoS One; v. 12, n. 6 JUN 9 2017.
• Web of Science Citations: 1

Abstract

This study's aims to verify the energy expenditure, metabolic distress and usefulness to evaluate the anaerobic constructs for different all-out durations in running efforts. Twelve active male underwent four testing sessions, one for familiarization and three performing one all-out (AO) tethered running sprint lasting 30s, 20s or 10s. Oxygen consumption, excess post exercise oxygen consumption, and lactate production were retained to analyse metabolic function, together with mechanical power and work as performance parameters. Paired results were compared via one-way ANOVA for repeated measures (Tukey-HSD post-hoc), effect sizes and ICC for absolute agreement. Statistical significance was accepted at p <= 0.05. Despite total and energy expenditure from oxidative pathway being significantly higher for longer durations (p < 0.001; ES > 0.7), glycolytic energy expenditure presented an agreement between AO30s and AO20s (ICC-A = 0.63{*}), while the paired comparisons to AO10s have presented significant differences (p < 0.01; ES > 1.0). Phosphagen energy expenditure were similar between all-out durations (p = 0.12; ICC-A = 0.62{*}; ES < 0.5). Maximum mechanical power was higher in AO10s than in AO30s (p = 0.03; ES = 0.6), not being different between AO10s and AO20s (p = 0.67; ICC-A = 0.88{*}; ES = 0.2) and between AO20s and AO30s (p = 0.18; ICC-A = 0.56{*}; ES = 0.4). In addition, agreement between work in the first ten seconds was confirmed via ICC only between AO10s and AO20s (p = 0.50; ICC-A = 0.86{*}; ES = 0.3), but not for the other paired comparisons (p < 0.1; ICC < 0.45; ES > 0.5). AO20s is a better alternative to estimate anaerobic power and capacity in one single test, with similar oxidative demand than AO30s. (AU)

• FAPESP's process: 09/08535-5 - Standardization and validity of aerobic and anaerobic tests in field and laboratory, using free, tethered and half-tethered running, in endurance and sprint runners
• Grantee: Claudio Alexandre Gobatto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/16710-7 - Validity and reliability of anaerobic power and capacity parameters derived from one test session in tethered running
• Grantee: Filipe Antônio de Barros Sousa
• Support Opportunities: Scholarships in Brazil - Doctorate