Neale A Tillin1, Jonathan P Folland. 1. Department of Life Sciences, Whitelands College, University of Roehampton, Holybourne Avenue, London, SW15 4JD, UK, neale.tillin@roehampton.ac.uk.
Abstract
PURPOSE: To compare the effects of short-term maximal (MST) vs. explosive (EST) strength training on maximal and explosive force production, and assess the neural adaptations underpinning any training-specific functional changes. METHODS: Male participants completed either MST (n = 9) or EST (n = 10) for 4 weeks. In training participants were instructed to: contract as fast and hard as possible for ~1 s (EST); or contract progressively up to 75% maximal voluntary force (MVF) and hold for 3 s (MST). Pre- and post-training measurements included recording MVF during maximal voluntary contractions and explosive force at 50-ms intervals from force onset during explosive contractions. Neuromuscular activation was assessed by recording EMG RMS amplitude, normalised to a maximal M-wave and averaged across the three superficial heads of the quadriceps, at MVF and between 0-50, 0-100 and 0-150 ms during the explosive contractions. RESULTS: Improvements in MVF were significantly greater (P < 0.001) following MST (+21 ± 12%) than EST (+11 ± 7%), which appeared due to a twofold greater increase in EMG at MVF following MST. In contrast, early phase explosive force (at 100 ms) increased following EST (+16 ± 14%), but not MST, resulting in a time × group interaction effect (P = 0.03), which appeared due to a greater increase in EMG during the early phase (first 50 ms) of explosive contractions following EST (P = 0.052). CONCLUSIONS: These results provide evidence for distinct neuromuscular adaptations after MST vs. EST that are specific to the training stimulus, and demonstrate the independent adaptability of maximal and explosive strength.
PURPOSE: To compare the effects of short-term maximal (MST) vs. explosive (EST) strength training on maximal and explosive force production, and assess the neural adaptations underpinning any training-specific functional changes. METHODS: Male participants completed either MST (n = 9) or EST (n = 10) for 4 weeks. In training participants were instructed to: contract as fast and hard as possible for ~1 s (EST); or contract progressively up to 75% maximal voluntary force (MVF) and hold for 3 s (MST). Pre- and post-training measurements included recording MVF during maximal voluntary contractions and explosive force at 50-ms intervals from force onset during explosive contractions. Neuromuscular activation was assessed by recording EMG RMS amplitude, normalised to a maximal M-wave and averaged across the three superficial heads of the quadriceps, at MVF and between 0-50, 0-100 and 0-150 ms during the explosive contractions. RESULTS: Improvements in MVF were significantly greater (P < 0.001) following MST (+21 ± 12%) than EST (+11 ± 7%), which appeared due to a twofold greater increase in EMG at MVF following MST. In contrast, early phase explosive force (at 100 ms) increased following EST (+16 ± 14%), but not MST, resulting in a time × group interaction effect (P = 0.03), which appeared due to a greater increase in EMG during the early phase (first 50 ms) of explosive contractions following EST (P = 0.052). CONCLUSIONS: These results provide evidence for distinct neuromuscular adaptations after MST vs. EST that are specific to the training stimulus, and demonstrate the independent adaptability of maximal and explosive strength.
Authors: Markus Gruber; Stefanie B H Gruber; Wolfgang Taube; Martin Schubert; Sandra C Beck; Albert Gollhofer Journal: J Strength Cond Res Date: 2007-02 Impact factor: 3.775
Authors: Garrett M Hester; Mitchel A Magrini; Ryan J Colquhoun; Alejandra Barrera-Curiel; Carlos A Estrada; Alex A Olmos; Alyssa R Bailly; Phuong L Ha; Jason M DeFreitas Journal: Eur J Appl Physiol Date: 2019-03-14 Impact factor: 3.078
Authors: Matthew Buckthorpe; Furio Danelon; Giovanni La Rosa; Gianni Nanni; Matthew Stride; Francesco Della Villa Journal: Sports Med Date: 2020-12-17 Impact factor: 11.136
Authors: Katja Tomazin; Filipa Almeida; Igor Stirn; Paulino Padial; Juan Bonitch-Góngora; Antonio J Morales-Artacho; Vojko Strojnik; Belen Feriche Journal: Int J Environ Res Public Health Date: 2021-06-24 Impact factor: 3.390