Neuromuscular adaptations to sprint interval training and the effect of mammalian omega-3 fatty acid supplementation

Autor: Adam H. Metherel, Thomas M.S. Wolever, Frédéric Stucky, Greg D. Wells, Peter W. Radonic, Evan J. H. Lewis
Rok vydání: 2017
Předmět:
Zdroj: European Journal of Applied Physiology. 117:469-482
ISSN: 1439-6327
1439-6319
DOI: 10.1007/s00421-017-3539-7
Popis: Sprint interval training (SIT) stimulates rapid metabolic adaptations within skeletal muscle but the nature of neuromuscular adaptions is unknown. Omega-3 polyunsaturated fatty acids (N-3 PUFA) are suggested to enhance neuromuscular adaptations to exercise. We measured the neuromuscular adaptations to SIT (Study-1) and conducted a placebo-controlled randomized double blinded study to determine the effect of N-3 PUFA supplementation on neuromuscular adaptations to SIT (Study-2). In Study-1, seven active men (24.4 ± 2.6 years, VO2 peak 43.8 ± 8.7 ml kg min−1) completed 2-weeks of SIT with pre- and post-training 10 km cycling time trials (TT). In Study-2, 30 active men (24.5 ± 4.2 years, VO2 peak 41.0 ± 5.1 ml kg min−1) were randomly assigned to receive N-3 PUFA (2330 mg day−1) (n = 14) or olive oil (n = 16) during 2-weeks of SIT with pre- and post-training TTs. Four week post-training, a SIT session and TT were also performed. Change in neuromuscular function was assessed from resting twitches, quadriceps maximal voluntary contraction (MVC) force, and potentiated twitch force (Q tw). Study-1 showed that SIT did not elicit significant neuromuscular adaptations. Study-2 showed that N-3 PUFA supplementation had no significant effect on neuromuscular adaptations. Training caused lower MVC force [mean ± SD; N-3 PUFA −9 ± 11%, placebo −9 ± 13% (p
Databáze: OpenAIRE
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