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A Technique for Subcutaneous Abdominal Adipose Tissue Biopsy via a Non-diathermy Method
Published on: September 30, 2017
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Individual Response to Standardized Exercise: Total and Abdominal Adipose Tissue
Andrea M Brennan1, Andrew G Day2,3, Theresa E Cowan1
1School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada.
Medicine and Science in Sports and Exercise
|February 22, 2019
Summary
Higher exercise amount and intensity increase the likelihood of meaningful adipose tissue (AT) reduction. However, using body measurements alone to predict individual AT changes remains challenging.
Area of Science:
- Exercise Physiology
- Body Composition Analysis
- Metabolic Health
Background:
- Adipose tissue (AT) reduction is a key goal in exercise interventions.
- Understanding individual responses to exercise is crucial for personalized health strategies.
- Minimal clinically important difference (MCID) provides a benchmark for meaningful change.
Purpose of the Study:
- To assess how exercise amount and intensity affect the proportion of individuals achieving clinically significant adipose tissue (AT) reductions.
- To investigate if common anthropometric changes correlate with individual AT responses exceeding the minimal clinically important difference (MCID).
Main Methods:
- Randomized controlled trial with 103 participants (men and women, aged 52.7 ± 7.6 years) over 24 weeks.
- Four groups: control, low amount low intensity (LALI), high amount low intensity (HALI), and high amount high intensity (HAHI) exercise.
- Adipose tissue (AT) changes quantified by MRI; individual response probabilities relative to MCID calculated and categorized.
Main Results:
- The HALI and HAHI groups showed a significantly higher proportion of individuals with "very likely" AT reductions (total AT, visceral AT) compared to controls (p<0.006).
- For participants reducing waist circumference (WC) or body weight by ≥ 2 cm or 2 kg, 51-69% of responses were "likely" or "very likely" beyond the MCID.
- Higher exercise volume and intensity correlated with a greater likelihood of achieving clinically meaningful AT reductions.
Conclusions:
- Increasing exercise amount and intensity appears to enhance the probability of individuals achieving "very likely" clinically meaningful adipose tissue (AT) reductions.
- Current anthropometric measures (e.g., WC, body weight) may not reliably identify all individuals experiencing significant AT loss.
- Further research is needed to refine methods for assessing individual responses to exercise for adiposity reduction.
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