ArticleEuropean journal of applied physiology2014
Influence of simulated microgravity on mechanical properties in the human triceps surae muscle in vivo. I: effect of 120 days of bed-rest without physical training on human muscle musculo-tendinous stiffness and contractile properties in young women.
Article in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.
- Effect of Time on Human Muscle Outcomes During Simulated Microgravity Exposure Without Countermeasures-Systematic Review.Frontiers in physiology · 2019Pooled it
- Voluntary activation of the ankle plantar flexors: A systematic review and meta-analysis.JSAMS plus · 2025Review
- Optimal fibre length and maximum isometric force are the most influential parameters when modelling muscular adaptations to unloading using Hill-type muscle models.Frontiers in physiology · 2024Article
- The State of the Organs of the Female Reproductive System after a 5-Day "Dry" Immersion.International journal of molecular sciences · 2023Article
- Impact of different ground-based microgravity models on human sensorimotor system.Frontiers in physiology · 2023Review
- Effects of Various Muscle Disuse States and Countermeasures on Muscle Molecular Signaling.International journal of molecular sciences · 2021Review
- Impact of chronic obstructive pulmonary disease on passive viscoelastic components of the musculoarticular system.Scientific reports · 2021Article
- Extracellular matrix at the muscle - tendon interface: functional roles, techniques to explore and implications for regenerative medicine.Connective tissue research · 2021Review
- Bioinspired Scaffold Action Under the Extreme Physiological Conditions of Simulated Space Flights: Osteogenesis Enhancing Under Microgravity.Frontiers in bioengineering and biotechnology · 2020Article
- Training-induced Changes in Development and Relaxation Electromechanical Delay (EMD).Iranian journal of public health · 2018Article
- Bed Rest, Exercise Countermeasure and Reconditioning Effects on the Human Resting Muscle Tone System.Frontiers in physiology · 2018Article
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of this study was to investigate the effect of a 120-day 5° head-down tilt (HDT) bed-rest on the mechanical properties of the human triceps surae muscle in healthy young women subjects.
methodsMeasurements included examination of the properties of maximal voluntary contractions (MVC), twitch contractions (P t) and tetanic contractions (P o). The difference between P o and MVC expressed as a percentage of P o and referred to as force deficiency (P d), was calculated. Electromyographic (EMG) activity in the soleus muscle, electromechanical delay (EMD) and total reaction time (TRT) were also calculated. EMD was the time interval between the change in EMG and the onset of muscle tension. Premotor time (PMT) was taken to be the time interval from the delivery of the signal to change in EMG.
resultsAfter HDT P t, MVC and P o had decreased by 11.5, 36.1, 24.4 %, respectively, P d had increased by 38.8 %. Time-to-peak tension had increased by 13.6 %, but half-relaxation time had decreased by 19.2 %. The rate of rise in isometric voluntary tension development had reduced, but no changes were observed in the electrically evoked contraction. EMD had increased by 27.4 %; PMT and TRT decreased by 21.4, and 13.7 %, respectively.
conclusionThe experimental findings indicated that neural as well as muscle adaptation occurred in response to HDT. EMD is a simple and quick method for evaluation of muscle stiffness changes and can serve as an indicator of the functional condition of the neuromuscular system.
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