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Aerobic exercise augments muscle transcriptome profile of resistance exercise.

ABSTRACT: Recent reports suggest that aerobic exercise may boost the hypertrophic response to short-term resistance training. This study explored the effects of an acute aerobic exercise bout on the transcriptional response to subsequent resistance exercise. Ten moderately trained men performed ?45 min cycling on one leg followed by 4 × 7 maximal knee extensions for each leg, 15 min later. Thus, one limb performed aerobic and resistance exercise (AE + RE) while the opposing leg did resistance exercise only (RE). Biopsies were obtained from the vastus lateralis muscle of each leg 3 h after the resistance exercise bout. Using DNA microarray, we analyzed differences [?1.5-fold, false discovery rate (FDR) ?10%] in gene expression profiles for the two modes of exercise. There were 176 genes up (127)- or downregulated (49) by AE + RE compared with RE. Among the most significant differentially expressed genes were established markers for muscle growth and oxidative capacity, novel cytokines, transcription factors, and micro-RNAs (miRNAs). The most enriched functional categories were those linked to carbohydrate metabolism and transcriptional regulation. Upstream analysis revealed that vascular endothelial growth factor, cAMP-response element-binding protein, Tet methylcytosine dioxygenase, and mammalian target of rapamycin were regulators highly activated by AE + RE, whereas JnK, NF-??, MAPK, and several miRNAs were inhibited. Thus, aerobic exercise alters the skeletal muscle transcriptional signature of resistance exercise to initiate important gene programs promoting both myofiber growth and improved oxidative capacity. These results provide novel insight into human muscle adaptations to diverse exercise modes and offer the very first genomic basis explaining how aerobic exercise may augment, rather than compromise, muscle growth induced by resistance exercise.

SUBMITTER: Lundberg TR

PROVIDER: S-EPMC4935502 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Aerobic exercise augments muscle transcriptome profile of resistance exercise.

Lundberg Tommy R TR Lundberg Tommy R TR Fernandez-Gonzalo Rodrigo R Tesch Per A PA Rullman Eric E Gustafsson Thomas T

American journal of physiology. Regulatory, integrative and comparative physiology 20160413 11

Recent reports suggest that aerobic exercise may boost the hypertrophic response to short-term resistance training. This study explored the effects of an acute aerobic exercise bout on the transcriptional response to subsequent resistance exercise. Ten moderately trained men performed ∼45 min cycling on one leg followed by 4 × 7 maximal knee extensions for each leg, 15 min later. Thus, one limb performed aerobic and resistance exercise (AE + RE) while the opposing leg did resistance exercise onl ...[more]

PMID: 27101291

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Project description:Background and aimsTo determine the comparative efficacy of resistance, aerobic, and combined resistance plus aerobic exercise on cardiovascular disease (CVD) risk profile.MethodsThis randomized controlled trial enrolled 406 adults aged 35-70 years with overweight or obesity and elevated blood pressure. Participants were randomly assigned to resistance (n = 102), aerobic (n = 101), combined resistance plus aerobic exercise (n = 101), or no-exercise control (n = 102). All exercise participants were prescribed 1 h of time-matched supervised exercise (the combination group with 30 min of each resistance and aerobic exercise) three times per week for 1 year. The primary outcome was the change from baseline to 1 year in the standardized composite Z-score of four well-established CVD risk factors: systolic blood pressure, low-density lipoprotein (LDL) cholesterol, fasting glucose, and per cent body fat.ResultsAmong 406 participants (53% women), 381 (94%) completed 1-year follow-up. Compared with the control group, the composite Z-score decreased at 1 year, which indicates improved CVD risk profile, in the aerobic {mean difference, -0.15 [95% confidence interval (CI): -0.27 to -0.04]; P = .01} and combination [mean difference, -0.16 (95% CI: -0.27 to -0.04); P = .009] groups, but not in the resistance [mean difference, -0.02 (95% CI: -0.14 to 0.09); P = .69] group. Both aerobic and combination groups had greater reductions in the composite Z-score compared with the resistance group (both P = .03), and there was no difference between the aerobic and combination groups (P = .96). Regarding the four individual CVD risk factors, only per cent body fat decreased in all three exercise groups at 1 year, but systolic blood pressure, LDL cholesterol, and fasting glucose did not decrease in any exercise groups, compared with the control group.ConclusionsIn adults with overweight or obesity, aerobic exercise alone or combined resistance plus aerobic exercise, but not resistance exercise alone, improved composite CVD risk profile compared with the control.

Project description:Interventions: This study was a 16-week exercise intervention programme done prior to surgery with assessments undertaken at three time-points: (1) baseline, (2) immediately pre-surgery and (3) 8-week post-surgery follow-up. This is a 16 weeks exercise programme that commenced prior to the schedule surgery. Patients undertook an exercise programme that consisted of two supervised clinic sessions per week. Each supervised exercise session took approximately 60 minutes to complete. Sessions commenced with a 5-minute warm-up consisting of moderate level of aerobic exercise (~60% heart rate maximum (HRmax)), as well as stretching exercises of the major muscle groups: chest, shoulder, biceps, triceps, quadriceps, hamstrings and calf muscles. This was followed by a resistance-training regime that included a series of six exercises targeting the major muscles of the upper- and lower-body. Upper-limb exercises included chest press, seated row and lat pull-down. Lower-limb exercises were leg extension, leg curl and leg press. All exercises were performed through the full range of motion adhering to correct techniques. To ensure the progressive nature of the training programme, patients were encouraged to work past the repetition maximum (RM) prescribed, with resistance increased by 5 – 10% for the subsequent set/training sessions if they were able to exceed the number specified. Progression of resistance followed guidelines previously outlined by Galvao and Newton (2005). The training phases were as follows: week 1 – 2 (two sets 12 RM), week 3 – 5 (three sets of 10 RM), week 6 – 8 (three sets of 8 RM), and week 9 – 10 (four sets of 6 RM). After week 10, the training phases set in week 1 – 2 were resumed to implement a periodised exercise model. A further 20 minutes of aerobic exercise was unde Primary outcome(s): The primary objective of this feasibility study was to determine the efficacy of a supervised, pre-surgical exercise programme consisting of targeted resistance and aerobic training for rectal cancer patients scheduled to received rectal resection surgery. Specifically, we aimed to investigate the effects of a pre-surgical exercise intervention on neuromuscular strength using the one-repetition maximum chest press, leg press, seated row and leg extension exercise protocol[Baseline, pre-surgery and 8-weeks post-surgery] Study Design: Purpose: Prevention; Allocation: Non-randomised trial

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Aerobic exercise augments muscle transcriptome profile of resistance exercise.

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Aerobic exercise augments muscle transcriptome profile of resistance exercise.

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