Resumen de Influence of Exercise Order on Oxygen Uptake During Strength Training in Young Women
Paulo de Tarso Veras Farinatti, Roberto Simão, Walace David Monteiro, Steven J. Fleck
This study investigated the effect of resistance exercise order on the oxygen uptake ([latin capital V with dot above]o2) and energy expenditure (EE). Ten trained women (age, 22 ± 2 years; body mass index, 21 ± 2 kg·m-2; peak [latin capital V with dot above]o2, 42.2 ± 2.9 ml.kg-1.min-1) volunteered for the study. Data were collected in 5 nonconsecutive days: (day 1) assessment of the peak [latin capital V with dot above]o2 in a maximum effort ramp treadmill protocol; (days 2 and 3) determination of 10 repetition maximum (10RM) for the bench press (BP), machine shoulder press (SP), and pulley triceps extension (TE); and (days 4 and 5) performing 3 sets of each exercise with 3-minute rest intervals between sets and exercises until fatigue using 10RM in 2 sequences of opposite order (sequence A [SEQA]: BP, SP, TE; sequence B [SEQB]: TE, SP, and BP). Total [latin capital V with dot above]o2 was assessed during all exercises, recovery intervals, and for 20 minutes after the end of the sequences. Energy expenditure was estimated from net [latin capital V with dot above]o2 by subtracting rest values from total [latin capital V with dot above]o2. No difference was found between the sequences for the total [latin capital V with dot above]o2 (p = 0.68) and net energy cost (p = 0.29) (SEQA: 25.41 ± 6.51 l and 60.01 ± 29.26 kcal; SEQB: 24.81 ± 4.08 l and 57.02 ± 15.25 kcal; mean ± SD). Conversely, the [latin capital V with dot above]o2 in the rest intervals between sets was higher for BP when it was placed at the end of SEQ B, and the same occurred with TE in SEQ A. In conclusion, the [latin capital V with dot above]o2 was lower for a given exercise when it was performed first as compared with last in a training session for the upper limbs. However, these differences did not affect the overall [latin capital V with dot above]o2 or EE during sequences performed in the opposite exercise order.
