Improved Sprint Performance With Inhaled Long-Acting β2-Agonists Combined With Resistance Exercise

in International Journal of Sports Physiology and Performance
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Purpose: To investigate the impact of twice-daily inhalation of 100 µg of salmeterol (SAL) or 12 µg of formoterol (FOR) in addition to a strength- and power-training program over a 5-wk period on a 30-m sprint, strength, power, mood, stress, and skinfold thickness. Methods: In a randomized, single-blind study, 23 male and 15 female nonasthmatic, recreationally active individuals were recruited (mean [SD] age 26.3 [5.4] y, weight 76.2 [11.5] kg, height 176.9 [8.5] cm). Participants completed 3 standardized whole-body strength- and power-training sessions per week for 5 wk during which they were assigned to an SAL, FOR, or placebo group. Participants used their inhaler twice per day as instructed and completed assessments of sprint, strength, and power at baseline and 1 wk after cessation of the training program. The assessments included a 30-m sprint, vertical jump, 1-repetition-maximum (1RM) bench press, 1RM leg press, peak torque flexion and extension, anthropometric evaluation, and Rest-Q questionnaires. Results: After 5 wk of strength and power training, 30-m sprint time reduced in the FOR (0.29 [0.11] s, P = .049) and SAL (0.35 [0.05] s, P = .040) groups compared with placebo (+0.01 [0.11] s). No significant change was found in other assessments of strength, mood, or skinfold thickness. Conclusions: When strength and power training are combined with the inhalation of FOR or SAL over a 5-wk period, moderately trained individuals experience an improvement in 30-m sprint performance.

Merlini, Marcora, and Dickinson are with the School of Sport and Exercise Sciences, University of Kent, Chatham Maritime, United Kingdom. Whyte and Chester are with the Research Inst of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom. Loosemore is with the Inst of Sport, Exercise and Health, University College London, London, United Kingdom.

Merlini (michele.merlini1986@gmail.com) is corresponding author.
International Journal of Sports Physiology and Performance
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