Neuromuscular Electrical Stimulation (NMES) and Muscle Protein Accretion (ES-PRO)
SarcopeniaIn the present study, the effect of a bolus of intrinsically labeled milk directly after one-legged NMES will be studied.
Effects of Resistance and Endurance Training on Synthesis of Individual Muscle Proteins in Young...
SarcopeniaLoss of skeletal muscle strength and skeletal muscle mass occurs with of aging. This are-related decline in skeletal muscle mass and skeletal muscle strength is a major underlying factor contributing to many of the metabolic disorders and frailty of the investigators rapidly expanding aging population. Endurance (aerobic) and resistance exercise training programs have been shown to effectively reverse the age-related decline in metabolic and contractile muscle functions. The investigators will measure synthesis rates of individual muscle proteins in 36 each of young (18-30 yrs) and 36 older (> 65 yrs) people to determine their response to 8 weeks each of endurance, resistance, combined endurance and resistance training, or placebo exercise training. Hypotheses. to measure fractional synthesis rates of multiple muscle proteins and identify those that are enhanced by an endurance exercise program to determine whether changes in protein synthesis in response to endurance exercise programs are dependent on age to measure fractional muscle synthesis rates of multiple muscle proteins and to identify those that are enhanced by a resistance exercise program to determine whether changes in protein synthesis in response to resistance exercise programs are dependent on age
Effects of Aerobic and Resistance Training on Accumulation of Old, Modified Proteins in Young and...
SarcopeniaMuscle proteins accumulate damage during aging and leads to the loss of muscle mass and function in older people. Exercise can increase the making of new proteins and removal of older proteins, but it is not known if the effect changes with aging or type of exercise. The investigators will determine the ability for endurance, resistance, or a combination of exercise training to remove older-damaged proteins and make newer-functional muscle proteins in groups of younger and older people. The investigators will particularly study protein that are involved with energy production (mitochondrial proteins) and force production (contractile proteins). Hypothesis 1: Older people will have greater accumulation of damaged proteins than younger people. Hypothesis 2: Aerobic exercise will decrease the accumulation of damaged forms of contractile and mitochondrial proteins in younger and older people. Hypothesis 3: Resistance exercise will decrease the accumulation of damaged forms of contractile proteins in younger and older people.
Leucine-enriched Formulas in Patients With Tumor-induced Sarcopenia
SarcopeniaCancerCurrently there is a lack of evidence for recommending specific oral supplements (OS) for nutritional support in patients with cancer, including leucine-enriched supplements.
Feasibility and Benefits of Group Based Exercise in Residential Aged Care Adults
Geriatric DisorderSarcopeniaThis study is a pilot study (feasibility and acceptability study), which will compare feasibility and efficacy outcomes between a 12-week Exercise Program and control group in RAC residents.
Manipulation of Dietary Protein and the Anabolic Response
Focus: Anabolic Response to Food Intake in Young IndividualsCondition Relevance: Skeletal Muscle Health1 moreIn the present study, the effect of habitual dietary protein on the anabolic response will be investigated.
Immune Function and Muscle Adaptations to Resistance Exercise in Older Adults
SarcopeniaAging1 moreThe loss of muscle mass and strength due to aging leads to serious health problems for older adults. Muscle health can be improved by exercise training, but some people improve their strength substantially, whereas others improve little. The reason for this variation is unknown. This study will investigate whether function of the immune system influences how well people respond to exercise. Older Veterans who participate will have their muscle size, strength, and function measured periodically for almost a year. Participants will drink a nutritional supplement or placebo daily and complete a 36 session strength training program. Participants will be vaccinated for tetanus and donate small amounts of blood and muscle tissue during the study so that immune function can be compared to muscle outcomes during training and during a long-term follow-up. The study results should increase the investigators' understanding of the negative effects of aging on muscle and will possibly lead to better strategies for muscle maintenance and rehabilitation for older adults.
Inflammaging and Muscle Protein Metabolism
InflammagingSarcopeniaThe development of a low-grade, chronic, systemic inflammation observed in the elderly (inflammaing) has been associated with increased risk for skeletal muscle wasting, strength loss and functional impairments. According to studies performed in animals and cell cultures increased concentrations of pro-inflammatory cytokines such as IL-6 and TNF-α as well as increased levels of hs-CRP lead to elevated protein degradation through proteasome activation and reduced muscle protein synthesis (MPS) via downregulation of the Akt-mTOR signaling pathway. However, evidence regarding the effects of inflammaging on skeletal muscle mass in humans is lacking. Thus, the present study will compare proteasome activation and the protein synthetic response in the fasted and postprandial period between older adults with increased systemic inflammation and their healthy control counterparts.
Effects of 12- Weeks of Quantitative Weight-bearing Progressive Resistance Exercise Training on...
Twelve Week Quantitative Weight Bearing of Resistance Training Effect on Glycemic Control and Muscle StrengthAccording to the International Diabetes Federation (IDF) in 2017 investigator found that the incidence of type 2 diabetes is currently 425 million people aged 20 to 79 in the world, and this data will increase o 629 million at 2045, The etiology of more than 90% is related to aging, it has become a serious challenge to public health. Sarcopenia is a newly noticed severe syndrome characterized by reduced walking speed, decreased grip strength, and decreased muscle mass. Patients with type 2 diabetes are at risk of sarcopenia and are those with normal blood sugar. One of the main ways to improve the face of sarcopenia is to exercise intensity. By carrying out a gradual training plan instead of using different weights, it will lead to muscle hypertrophy and increase in muscle strength to achieve muscle gain. In view of the fact that the commercially available sandbags are cheap and easy to obtain, the weight is fixed, and the use variability is high, it is expected to introduce quantitative weight-bearing progressive exercises in type 2 diabetes and have symptoms of muscle loss to improve muscle mass, and to control blood sugar. The quality of life can have better benefits.
Effects of Whey and Collagen on FFM, Muscle Strength and Wound Healing in Elderly Surgical Patients...
Hip ArthritisSarcopenia1 moreThe purpose of the study is to compare the effect of whey protein and collagen on fat free mass, muscle strength, functional ability, wound healing and life quality in elderly patients undergoing elective knee- or hip surgery (defined as elective knee- or hip arthroplasty). The patients are admitted at the department of Orthopaedic Surgery at Herlev Gentofte Hospital.