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The Muscle Monitor: Early Skeletal Muscle Indicators of Insulin Resistance and Cardiometabolic Risk (MUSCLE MONITOR)

2026년 6월 24일 업데이트: University Ghent

The Muscle Phenotype and Cardiometabolic Health Monitoring Project

Insulin resistance is an early etiological factor in the development of type-2 diabetes (T2D), which constitutes a large societal health burden with an expected additional rise in the years to come.

Skeletal muscle is the body's largest lean tissue mass and the major site of glucose disposal in response to insulin stimulation. Prior studies have suggested that a fast skeletal muscle phenotype, including a predominant fast muscle fiber composition, reduced capillary density, low fat oxidation and muscle oxidative capacity may be implicated in insulin resistance and TD2 development. However, key questions pertain in relation to the cause and effect of these relationships as well as the interaction with potential confounders and effect-modifiers including life-style factors (e.g. diet and physical activity levels) and general participant characteristics (e.g. body composition and training status).

In the present project, we therefore aim to derive muscle fiber type and extensively map the proteomic signature of the early stages of insulin resistance in a large cross-sectional study using a young and apparently healthy cohort prior to T2D development, including a thorough participant characterization. We will recruit ~250 participants (men and women) in the age of 20-30 years and conduct extensive phenotyping and tissue sampling across one laboratory-based test day and a scan visit, as well as measurements of physical activity level and glucose handling in free-living conditions with wearable sensors.

The study has a longitudinal aspect as participants will be re-invited at 5-year intervals for up to 20 years to delineate the trajectory of metabolic health in relation to muscle phenotype measures.

The results of the project are expected to lead to significant advancements in our understanding of the importance of muscle phenotype for early-stage insulin resistance and metabolic health trajectories. Such understanding has potentially important clinical implications, as it can open new avenues for targeted interventions and individualized early preventive strategies to counter or delay the progression of insulin resistance and associated metabolic and cardiovascular disorders.

연구 개요

상태

모병

정황

상세 설명

The project is composed of 1) a screening visit to determine study eligibility, 2) a main test day in the lab, 3) 10 days of physical activity tracking and continuous glucose monitoring in free-living conditions and 4) a scan visit including a whole-body MRI scan and lower leg pQCT scan.

For the main lab visit the participants will arrive in the morning after an overnight fast. This visit includes measurements of anthropometrics, resting metabolic rate, resting heart rate + heart rate variability, arterial stiffness, intima media thickness, as well as blood pressure obtained in the supine position. In addition, a fasting blood sample will be obtained followed by a 2-h glucose tolerance test with concomitant questionnaires provided in writing on basic demographics, physical activity level, sleep, stress and mental health. Two thigh muscle biopsies and a subcutaneous adipose tissue fat sample from the abdominal region will be obtained, while maximal voluntary knee-extensor contraction torque and rate of force development will be measured. Lastly, cycling-based assessments of maximal fat oxidation rate, peak power and maximal oxygen uptake will be assessed using indirect calorimetry including capillary lactate samples.

The scan visit will consist of an MRI whole-body scan, soleus and gastrocnemius 1H-MRS and a pQCT bone scan of the lower limb at 4% and 66% of the total bone length.

The objective measurements of physical activity levels and glucose-handling capacity will be performed for 10 days in free-living conditions using feasibly worn sensors (continuous glucose monitor and thigh-worn accelerometer). During this time, a food dairy needs to be filled in during two week days and one weekend day to estimate the habitual food intake.

A standardized evening meal will be provided prior to the laboratory-based test day and a standardized lunch meal served during the testing day.

연구 유형

관찰

등록 (추정된)

250

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 연락처 백업

연구 장소

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

  • 성인

건강한 자원 봉사자를 받아들입니다

해당 없음

샘플링 방법

비확률 샘플

연구 인구

Participants will be recruited from the greater Ghent area (Belgium) using recruitment materials including posters mounted on relevant locations (e.g. educational sites) and circulated on social media (e.g. Facebook, Linkedin, Twitter). The Gent University volunteer register of people who have expressed interest in participating in research studies will also be used.

설명

Inclusion Criteria:

  • Sex: Males and females
  • Age: 20-30 years
  • BMI <35
  • Healthy (no diagnosed chronic disease)

Exclusion Criteria:

  • Chronic disease deemed to affect study outcomes
  • Disease that increase haemorrhage risk
  • Daily intake of medication that could confound study outcomes
  • Regular smokers
  • Active pregnancy
  • Immobilization (inactivity due to injury or illness, e.g. cast or brace) for more than a week in the month prior to the study or for more than 4 weeks in the past 6 months prior to the study
  • Very high structured physical exercise level (>10 h/week).
  • Participants not willing to adhere to standardized meal prescriptions included in the study protocols will also be excluded (due to e.g. allergies or specific dietary preferences)

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Whole-body insulin sensitivity
기간: At baseline and at 5-year intervals for up to 20 years
The Matsuda index derived from an oral glucose tolerance test
At baseline and at 5-year intervals for up to 20 years

2차 결과 측정

결과 측정
측정값 설명
기간
Skeletal muscle fiber type
기간: At baseline and at 5-year intervals for up to 20 years
Skeletal muscle fiber type assessed using SDS page
At baseline and at 5-year intervals for up to 20 years
Molecular skeletal muscle profile
기간: At baseline and at 5-year intervals for up to 20 years
Molecular profiling of skeletal muscle tissue, including proteomic and related pathway-level analyses relevant to metabolic function.
At baseline and at 5-year intervals for up to 20 years
MRI-derived muscle and fat volumes
기간: At baseline and at 5-year intervals for up to 20 years
Whole-body MRI-derived muscle and fat volumes at the total and regional body level
At baseline and at 5-year intervals for up to 20 years
MRI derived tissue fat infiltration
기간: At baseline and at 5-year intervals for up to 20 years
Whole-body MRI-derived tissue fat infiltration in the liver, intermuscular and intramuscular area
At baseline and at 5-year intervals for up to 20 years
Physical activity level
기간: At baseline and at 5-year intervals for up to 20 years
Accelerometer-based physical activity levels
At baseline and at 5-year intervals for up to 20 years
HOMA-IR
기간: At baseline and at 5-year intervals for up to 20 years
Homeostatic Model Assessment of Insulin Resistance based on fasted blood sampling
At baseline and at 5-year intervals for up to 20 years
Cardiorespiratory fitness
기간: At baseline and at 5-year intervals for up to 20 years
Maximal oxygen uptake assessed using indirect calorimetry during incremental cycling
At baseline and at 5-year intervals for up to 20 years
Muscle strength
기간: At baseline and at 5-year intervals for up to 20 years
Maximal voluntary isometric contraction torque assessed in a dynamometer
At baseline and at 5-year intervals for up to 20 years
Free-living glycaemic control
기간: At baseline and at 5-year intervals for up to 20 years
Continuous glucose monitoring-derived glycaemic metrics during free-living conditions
At baseline and at 5-year intervals for up to 20 years
Dietary intake
기간: At baseline and at 5-year intervals for up to 20 years
Dietary intake assessed using repeated 24-hour food diaries and food frequency questionnaires, including estimates of energy intake and macronutrient composition.
At baseline and at 5-year intervals for up to 20 years
Subcutaneous adipose tissue phenotyping
기간: At baseline and at 5-year intervals for up to 20 years
Proteomics derived measures of adipose tissue phenotype
At baseline and at 5-year intervals for up to 20 years
Maximal fat oxidation rate
기간: At baseline and at 5-year intervals for up to 20 years
Maximal fat oxidation rate obtained using indirect calorimetry during incremental cycling
At baseline and at 5-year intervals for up to 20 years
Pulsewave velocity
기간: At baseline and at 5-years intervals for up to 20 years
Carotid-femoral pulsewave velocity measured using Doppler echocardiography with ECG gating
At baseline and at 5-years intervals for up to 20 years
Resting heart rate
기간: At baseline and at 5-year intervals for up to 20 years
Resting heart rate assessed using a chest-worn heart rate monitor
At baseline and at 5-year intervals for up to 20 years
Heart rate variability
기간: At baseline and at 5-year intervals for up to 20 years
Heart rate variability assessed using a chest-worn heart rate monitor
At baseline and at 5-year intervals for up to 20 years

기타 결과 측정

결과 측정
측정값 설명
기간
Blood pressure
기간: At baseline and at 5-year intervals for up to 20 years
Systolic and diastolic blood pressure obtained using a sphygmomanometer
At baseline and at 5-year intervals for up to 20 years
10 s sprint peak and average power
기간: At baseline and at 5-year intervals for up to 20 years
Peak and average power output during a 10 s sprint test
At baseline and at 5-year intervals for up to 20 years
Lactate accumulation
기간: At baseline and at 5-year intervals for up to 20 years
Lactate accumulation during a 10 s cycling sprint test
At baseline and at 5-year intervals for up to 20 years
Blood lipid profile
기간: At baseline and at 5-year intervals for up to 20 years
Including measures of triglycerides, free fatty acids, lipoprotein (a), cholesterol, high-density lipoprotein cholesterol, non-high-density lipoprotein cholesterol, very-low-density lipoprotein cholesterol
At baseline and at 5-year intervals for up to 20 years
Bone measurements
기간: At baseline and at 5-year intervals for up to 20 years
Bone density assessed using peripheral quantitative computed tomography (pQCT).
At baseline and at 5-year intervals for up to 20 years

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

University Ghent

협력자

University Hospital, Ghent

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2025년 5월 19일

기본 완료 (추정된)

2046년 12월 31일

연구 완료 (추정된)

2046년 12월 31일

연구 등록 날짜

최초 제출

2026년 2월 12일

QC 기준을 충족하는 최초 제출

2026년 6월 24일

처음 게시됨 (실제)

2026년 7월 1일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 7월 1일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 6월 24일

마지막으로 확인됨

2026년 6월 1일

추가 정보

이 연구와 관련된 용어

키워드

추가 관련 MeSH 약관

기타 연구 ID 번호

  • ONZ-2024-0588

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

아니요

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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