Related Experiment Video
Updated: May 30, 2026
07:29
Dosage-Adjusted Resistance Training in Mice with a Reduced Risk of Muscle Damage
Published on: August 31, 2022
Nutrition and resistance exercise during reconditioning from unloading
Kyle J Hackney1, Summer B Cook, Lori L Ploutz-Snyder
1Department of Exercise Science, Syracuse University, Syracuse, NY 13244, USA. kjhackne@syr.edu
Aviation, Space, and Environmental Medicine
|August 23, 2011
Summary
Nutritional timing aids muscle endurance recovery after unloading, while higher protein intake supports muscle size gains. Further research is recommended for optimal recovery strategies.
Area of Science:
- Exercise Physiology
- Nutritional Science
- Muscle Biology
Background:
- Musculoskeletal unloading leads to muscle atrophy and functional decline.
- Limited research exists on optimizing recovery from unloading.
- Nutrition, including energy and protein intake, influences training adaptations.
Purpose of the Study:
- To investigate the combined effects of nutrition and resistance exercise on muscle recovery after unloading.
- To explore the role of amino acid-carbohydrate (AACHO) supplementation during reconditioning.
Main Methods:
- Six participants underwent unilateral lower limb suspension followed by a reconditioning period.
- Muscle cross-sectional area (CSA), strength, and endurance were measured.
- Participants consumed either AACHO or a placebo before resistance exercise during reconditioning.
Main Results:
- Muscle endurance improved with AACHO supplementation but decreased with placebo.
- Muscle CSA and strength increased similarly in both groups.
- A significant positive correlation was found between daily protein intake and muscle CSA recovery.
Conclusions:
- Timing amino acid-carbohydrate intake enhanced muscular endurance during reconditioning.
- Overall protein intake correlated with improved muscle size recovery.
- Further studies are needed to understand the synergy between nutrition and exercise for muscle recovery.
More Related Videos
08:31Versatility of Protocols for Resistance Training and Assessment Using Static and Dynamic Ladders in Animal Models
Published on: December 17, 2021
12:59Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
Related Concept Videos
01:27Exercise and Muscle Performance
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
01:20Exercise and Cardiovascular Response
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
01:24Muscle Recovery and Fatigue
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective response...
01:15Stress: General Loading Conditions
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
01:26Cellular Adaptation II: Hypertrophy
Hypertrophy is the increase in the size of individual cells, resulting in the enlargement of a tissue or organ. Unlike hyperplasia, which involves an increase in cell number, hypertrophy is characterized by an increase in cell volume. This process often occurs in response to higher functional demand or hormonal stimulation, leading to the production of more structural proteins and organelles, thereby enhancing the cells' work capacity.There are two primary types of hypertrophy: physiological...
01:22Heart Failure VI: Adjunct Therapies
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.