Acute Effects of a High Volume vs. High Intensity Bench Press Protocol on Electromechanical Delay and Muscle Morphology in Recreationally Trained Women.
Sandro BartolomeiFederico NigroIvan Malagoli LanzoniAnna Lisa MangiaMatteo CortesiSimone CiacciSilvia FantozziPublished in: International journal of environmental research and public health (2021)
The purpose of the present investigation was to compare the acute responses on muscle architecture, electromechanical delay (EMD) and performance following a high volume (HV: 5 sets of 10 reps at 70% of 1 repetition maximum (1RM)) and a high intensity (HI: 5 sets of 3 reps at 90% of 1RM) bench press protocol in women. Eleven recreationally trained women (age = 23.3 ± 1.8 y; body weight = 59.7 ± 6.0 kg; height = 164.0 ± 6.3 cm) performed each protocol in a counterbalanced randomized order. Muscle thickness of pectoral (PEC MT) and triceps muscles (TR MT) were collected prior to and 15 min post each trial. In addition, EMD of pectoral (PEC EMD) and triceps (TR EMD) muscles were calculated during isometric bench press maximum force tests performed at the same timepoints (IBPF). Significantly greater increases in PEC MT (p < 0.001) and TR MT (p < 0.001) were detected following HV compared to HI. PEC EMD showed a significantly greater increase following HV compared to HI (p = 0.039). Results of the present study indicate that the HV bench press protocol results in greater acute morphological and neuromuscular changes compared to a HI protocol in women. Evaluations of muscle morphology and electromechanical delay appear more sensitive to fatigue than maximum isometric force assessments.
Keyphrases
- high intensity
- resistance training
- polycystic ovary syndrome
- randomized controlled trial
- liver failure
- skeletal muscle
- body weight
- body composition
- respiratory failure
- pregnancy outcomes
- clinical trial
- cervical cancer screening
- aortic dissection
- drug induced
- phase iii
- insulin resistance
- adipose tissue
- study protocol
- intensive care unit
- double blind
- physical activity
- metabolic syndrome
- phase ii
- placebo controlled
- acute respiratory distress syndrome