GEO DataSets

(Submitter supplied) Evidence from clinical trials and observational studies suggests that both progressive resistance training (PRT) and metformin delay a variety of age-related morbidities. Previously, we completed a clinical trial testing the effects of 14 weeks of PRT + metformin (metPRT) compared to PRT with placebo (plaPRT) on muscle hypertrophy in older adults. We found that metformin blunted PRT-induced muscle hypertrophic response. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20301

136 Samples

Download data: TXT

(Submitter supplied) Global microarray (HG U133 Plus 2.0) was used to investigate the effects of resistance exercise and resistance training on the skeletal muscle transcriptome profile of 28 young and old adults. Vastus lateralis muscle biopsies were obtained pre and 4hrs post resistance exercise in the beginning (untrained state) and at the end (trained state) of a 12 wk progressive resistance training program.

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS5218

Platform:

GPL570

110 Samples

Download data: CEL, CHP

(Submitter supplied) Global microarray (HG U133 Plus 2.0) was used for the first time to investigate the effects of resistance exercise on the transcriptome in slow-twitch myosin heavy chain (MHC) I and fast-twitch MHC IIa muscle fibers of young and old women. Vastus lateralis muscle biopsies were obtained pre and 4hrs post resistance exercise in the beginning (untrained state) and at the end (trained state) of a 12 wk progressive resistance training program.

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS5217

Platform:

GPL570

70 Samples

Download data: CEL, CHP

(Submitter supplied) Global microarray (HG U133 Plus 2.0) was used to investigate the basal level skeletal muscle transcriptome profile of young and old adults. One vastus lateralis muscle biopsy was obtained in the basal state from 36 different subjects.

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS5216

Platform:

GPL570

36 Samples

Download data: CEL, CHP

Analysis of vastus lateralis muscle biopsy samples from young (about 24 years old) and old (about 84 years old) adults before and after 12 weeks of progressive resistance training. Results provide insight into the molecular adaptation of the young and old skeletal muscle to resistance training.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 age, 2 gender, 4 time sets

Platform:

GPL570

Series:

GSE28422

110 Samples

Download data: CEL, CHP

Analysis of slow-twitch MHC I and fast-twitch MHC IIa muscle fibers from young and old women before and after 12 weeks of progressive resistance training. Fibers obtained from vastus lateralis. Results provide insight into the molecular adaptation of young and old MHC I and IIa fibers to exercise.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 age, 14 individual, 4 time, 2 tissue sets

Platform:

GPL570

Series:

GSE28392

70 Samples

Download data: CEL, CHP

Analysis of vastus lateralis muscle biopsy samples from young (about 25 years old) and old (about 78 years old) adults. Subjects had not taken part in formal exercise. Results provide insight into the effect of age on basal gene expression in the skeletal muscle.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 age, 2 gender sets

Platform:

GPL570

Series:

GSE25941

36 Samples

Download data: CEL, CHP

(Submitter supplied) Administration of metformin increases healthspan and lifespan in model systems and evidence from clinical trials and observational studies suggests that metformin delays a variety of age-related morbidities. Although metformin has been shown to modulate multiple biological pathways at the cellular level, these pleiotropic effects of metformin on the biology of human aging have not been studied. We studied ~70-year-old participants (n=14), in a randomized, double-blind, placebo-controlled, crossover trial in which they were treated with 6 weeks each of metformin and placebo. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

100 Samples

Download data: TXT

(Submitter supplied) The skeletal muscle system plays an important role in the independence of older adults. In this study we examine differences in the skeletal muscle transcriptome between healthy young and older subjects and (pre‐)frail older adults. Additionally, we examine the effect of resistance‐type exercise training on the muscle transcriptome in healthy older subjects and (pre‐)frail older adults. Baseline transcriptome profiles were measured in muscle biopsies collected from 53 young, 73 healthy older subjects, and 61 frail older subjects. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL20880

259 Samples

Download data: CEL

(Submitter supplied) Bulk polyA-RNAseq was performed on vastus lateralis muscle samples from older adults ≥65y at baseline and post-14 wk resistance exercise training (high-low-high intensity). The primary study used network biology algorithms to create gene networks of highly connected transcripts, and then linked these to change in muscle size induced by exercise training.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Third-party reanalysis

Platform:

GPL20301

4 Samples

Download data: TXT

(Submitter supplied) The molecular mechanisms underlying the sex differences in human muscle morphology and function remain to be elucidated. The purpose of the study was to detect the sex differences in the skeletal muscle transcriptome in both the resting state and following anabolic stimuli, resistance exericse.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

28 Samples

Download data: CEL, CHP

(Submitter supplied) Human subjects were randomized for treatment with a GnRH-analogue, Goserelin, which suppresses endogenous testosterone or placebo for 12 weeks. Strength training was performed during the last 8 weeks. The suppression of testosterone resulted in an attenuation of the normal muscle adaptation to strength training (increased muscle mass and strength). To identify molecular signals involved in the response to testosterone levels, biopsies were obtained 4 hours after the last training session and gene expression compared with Affymetrix 3' microarrays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

9 Samples

Download data: CEL

(Submitter supplied) We tested the hypothesis that 2-weeks of metformin ingestion in healthy older adults would improve intrinsic age-related deficits in myoblast (activated satellite cell) function as tested by a series of in vitro functional assays to determine proliferation, fusion index, and myoblast-endothelial cell homing.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

24 Samples

Download data: TXT

(Submitter supplied) Vitamin D deficiency is common among older adults and has been linked to muscle weakness. Vitamin D supplementation has been proposed as a strategy to improve muscle function in older adults. The aim of this study was to investigate the effect of calcifediol (25-hydroxycholecalciferol) on whole genome gene expression in skeletal muscle of vitamin D deficient frail older adults. A double-blind placebo controlled trial was conducted in vitamin D deficient frail older adults (aged above 65), characterized by blood 25-hydroxycholecalciferol concentrations between 20 and 50 nmol/L. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17692

44 Samples

Download data: CEL

(Submitter supplied) In our study, we investigated for contractile activity-specific changes in the transcriptome in untrained and trained (after an aerobic training programme) human skeletal muscle. The second goal was to examine effect of aerobic training on gene expression in muscle at baseline (after long term training). Seven untrained males performed the one-legged knee extension exercise (for 60 min) with the same relative intensity before and after a 2 month aerobic training programme (1 h/day, 5/week). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL16791 GPL18573

84 Samples

Download data: TXT

(Submitter supplied) 10 male subjects performed ~45 min one-legged cycling and 4 x 7 maximal concentric-eccentric 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 m. vastus lateralis of each leg 3 h after the resistance exercise bout. Gene expression analysis was carried out on the Affymetrix HuGene-2.1-st platform.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17692

20 Samples

Download data: CEL

(Submitter supplied) Human aging is associated with skeletal muscle atrophy and functional impairment (sarcopenia). Multiple lines of evidence suggest that mitochondrial dysfunction is a major contributor to sarcopenia. We evaluated whether healthy aging was associated with a transcriptional profile reflecting mitochondrial impairment and whether resistance exercise could reverse this signature to that approximating a younger physiological age. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2700

65 Samples

Download data: CSV

(Submitter supplied) The present analysis was executed to determine the impact of protein supplementation on changes in the muscle transcriptome following prolonged endurance training

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL28236

80 Samples

Download data: CEL, TXT

(Submitter supplied) The present study concerns the effects of 21 days of sustained recumbence (bedrest) on skeletal muscle gene expression. 14 male subjects participated in normoxic bedrest (NBR) with muscle unloading, for 21 days, this is a substudy of tha PlanHab-study which apart from normoxic bedrest also involved hyboxic bedrest and hypoxic ambulation Throughout both bedrest interventions, each subject remained in a horizontal position at all times. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17692

24 Samples

Download data: CEL

(Submitter supplied) Male patients (n=6, mean age 62 years) with NYHA III-IV and an left ventricular ejection fraction of <35% despite pharmacological therapy received 35 hours of enhanced external counterpulsation (EECP) over a period of 7 weeks. Before and after treatment, lateral vastus muscle biopsies were obtained and skeletal muscle gene expression was evaluated using the Affymetrix HuGene 1.0 platform.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

12 Samples

Download data: CEL