ArticleNutrients2016
Aging Reduces the Activation of the mTORC1 Pathway after Resistance Exercise and Protein Intake in Human Skeletal Muscle: Potential Role of REDD1 and Impaired Anabolic Sensitivity.
Article in Nutrients, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
41 citing papers in PubMed, 3 syntheses or guidelines pooled it, 79 citations in OpenAlex.
- The Impact of Inspiratory Muscle Training on Diaphragm Thickness in Healthy Adults: A Systematic Review and Meta-Regression.Medicina (Kaunas, Lithuania) · 2026Pooled it
- Pooled it
- Pooled it
- miR-19b-3p is associated with a diametric response to resistance exercise in older adults and regulates skeletal muscle anabolism via PTEN inhibition.American journal of physiology. Cell physiology · 2021Trial
- Omega-3 Supplementation Improves Isometric Strength But Not Muscle Anabolic and Catabolic Signaling in Response to Resistance Exercise in Healthy Older Adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2021Trial
- Multifactorial nature of anabolic resistance in ageing skeletal muscle: A systems modelling study.The Journal of physiology · 2026Article
- Putting the brakes on muscle growth: Myostatin as regulator of disuse atrophy.Experimental physiology · 2026Review
- Delayed molecular aging, preservation of energy metabolism and enhanced exercise response in exercise-trained human muscle.Nature aging · 2026Article
- Exercise, Cellular Senescence, and Cancer: Novel Perspectives on Functional Aging Through Block Strength Training in Older Adults-A Narrative Review.Biomedicines · 2026Review
- mTORC1 signalling and protein synthesis are elevated in response to amino acids in human myotubes obtained from young, old, and old trained men.In vitro cellular & developmental biology. Animal · 2026Article
- Age-Related Anabolic Resistance: Nutritional and Exercise Strategies, and Potential Relevance to Life-Long Exercisers.Nutrients · 2025Review
- Resistance exercise and skeletal muscle: protein synthesis, degradation, and controversies.European journal of applied physiology · 2025Review
- Resistance training alleviates muscle atrophy and muscle dysfunction by reducing inflammation and regulating compromised autophagy in aged skeletal muscle.Frontiers in immunology · 2025Article
- One-year trajectories of nutritional status in perimenopausal women: a community-based multi-centered prospective study.BMC public health · 2024Observational
- Anabolic Resistance in the Pathogenesis of Sarcopenia in the Elderly: Role of Nutrition and Exercise in Young and Old People.Nutrients · 2023Review
- The stress-responsive protein REDD1 and its pathophysiological functions.Experimental & molecular medicine · 2023Review
- Does the blunted stimulation of skeletal muscle protein synthesis by aging in response to mechanical load result from impaired ribosome biogenesis?Frontiers in aging · 2023Review
- Moderate to vigorous physical activity, leucine, and protein intake contributions to muscle health in middle age.Journal of frailty, sarcopenia and falls · 2022Article
- Stubborn Exercise Responders-Where to Next?Sports (Basel, Switzerland) · 2022Review
- The mixed blessing of AMPK signaling in Cancer treatments.BMC cancer · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study was designed to better understand the molecular mechanisms involved in the anabolic resistance observed in elderly people. Nine young (22 ± 0.1 years) and 10 older (69 ± 1.7 years) volunteers performed a one-leg extension exercise consisting of 10 × 10 repetitions at 70% of their 3-RM, immediately after which they ingested 30 g of whey protein. Muscle biopsies were taken from the vastus lateralis at rest in the fasted state and 30 min after protein ingestion in the non-exercised (Pro) and exercised (Pro+ex) legs. Plasma insulin levels were determined at the same time points. No age difference was measured in fasting insulin levels but the older subjects had a 50% higher concentration than the young subjects in the fed state (p < 0.05). While no difference was observed in the fasted state, in response to exercise and protein ingestion, the phosphorylation state of PKB (p < 0.05 in Pro and Pro+ex) and S6K1 (p = 0.059 in Pro; p = 0.066 in Pro+ex) was lower in the older subjects compared with the young subjects. After Pro+ex, REDD1 expression tended to be higher (p = 0.087) in the older group while AMPK phosphorylation was not modified by any condition. In conclusion, we show that the activation of the mTORC1 pathway is reduced in skeletal muscle of older subjects after resistance exercise and protein ingestion compared with young subjects, which could be partially due to an increased expression of REDD1 and an impaired anabolic sensitivity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.