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Typical magnetic resonance image examples using fat‐water separated two‐point Dixon imaging: (a) water image and (b) fat image. RF, rectus femoris; VI, vastus intermedius; VL, vastus lateralis; VM, vastus medialis.
Source publication
The objective of this study was to investigate the effects of free weight and body mass‐based resistance training (RT) on muscle size and thigh intramuscular fat (IMF) in young and middle‐aged individuals. Healthy individuals (aged 30–64 years) were assigned to either a free weight RT group (n = 21) or a body mass‐based RT group (n = 16). Both grou...
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Objective: Low-intensity resistance training (≤25% 1RM) combined with blood flow restriction training (BFRT) is beneficial to increasing muscle mass and muscle strength, but it cannot produce increased muscle activation and neuromuscular adaptation, as traditional high-intensity strength training does. The purpose of this study is to investigate th...
Purpose
The practice of Functional Fitness Training (FFT) combines aerobic and muscle strength exercises that can lead to adaptations different from those observed with the isolated practice of Strength Training (ST). Thus, this study aimed to compare lower limb power and hypertrophy in different muscle portions between FFT and ST practitioners.
M...
BACKGROUND AND OBJECTIVES
Physical exercise is an efficient non-pharmacological strategy for the treatment of knee osteoarthritis (KOA). Blood flow restriction (BFR) is a technique known to enhance strength and hypertrophy gains when combined with low-intensity resistance exercise. This study aimed to analyze the effects of 12 weeks of low-intensit...
Citations
... Weight training is primarily aimed at increasing muscle strength and muscle mass, but its effectiveness in managing body fat has led to a growing number of participants. Weight training involves applying load to the muscles to enhance their resistance, thereby improving muscle strength and endurance 4) . This is achieved by progressively overloading the muscles with weights heavier than those encountered in daily activities. ...
... The effect of resistance training on neuromuscular adaptations depends on multiple factors, such as training-period, − frequency, − volume, and − intensity, target muscle, participant's characteristics and so on. For instance, body mass-based resistance training including 9 exercises (4 exercises for mainly targeted to lower extremities) performed twice a week for 8 weeks can increase the quadriceps femoris cross-sectional-area and decrease intramuscular fat in young and middle-aged individuals (Ogawa et al., 2023). Three-month body mass-based exercise (such as squat) is reported to improve isometric knee extension torque relative to body mass (Yoshitake et al., 2011). ...
... Studies have explored the effects of resistance training on increasing the intensity of muscle function 11 . Self-weighted or weighted squatting with increasing loads is a commonly used approach 12 . This approach effectively enhances the maximal power of the lower limb muscles, especially the quadriceps, thereby enhancing athletic performance 13 . ...
Introduction: The ability of the lower limbs to undergo high-velocity contractions significantly impacts the capacity of athletes. However, not much is known about the effect of drop-set training (DST) on muscle contraction velocity. This study aimed to examine the impact of rapid drop set resistance training on high-velocity lower extremity contractions.
Methods: Sixteen teenagers were assigned to either traditional resistance training (TRT) or DST groups. The TRT group performed squats at 1.8 times their body weight, while the DST group performed squats at 1.8 then 1.3 times their body weight. Before and after training, knee muscle strength and body composition were measured using an isokinetic dynamometer and bioelectrical impedance tester.
Results: There were significant increases in fat-free mass, peak torque at 180°/s, and peak work in the right leg of the DST group. Peak torque, peak work, and average power increased significantly post-intervention butdid not differ significantly between the two groups.
Conclusion: Compared to constant resistance training, 1.8- and 1.3-times body weight drop training is more effective than constant resistance training in boosting muscle mass and strength during rapid contractions of the lower extremities. Furthermore, both TRT and DST effectively improve lower-extremity muscle strength at lower-speed contractions.
Purpose of review:
The prevalence of obesity has exponentially increased during the past years. The assessment of human adipose tissue distribution enables the identification of diverse ectopic adipose tissue depots, and helps to explain its relationship with cardiovascular health status. In this review, we summarize the current methods used in the assessment of human adipose tissue distribution, and we discuss the relationship between ectopic adipose tissue distribution and the risk of developing cardiovascular diseases and metabolic complications.
Recent findings:
The reference instruments to assess human adipose tissue distribution nowadays are the computed tomography and the magnetic resonance imaging (MRI). Today, MRI is the preferred imaging technique and enables the measurement of variations in the distribution of body adipose tissue among different phenotypes and individuals. This technique has helped to better understand the relationship between different ectopic adipose tissue depots and its relationship with cardiometabolic health among individuals.
Summary:
Although body composition can be assessed by simple techniques, these calculations can provide erroneous results and conclusions, requiring complex interpretations when diverse metabolic situations are concomitantly engaged. Contrarily, medical imaging techniques (e.g. MRI) enables to objectively and unbiasedly measure changes that may occur during longitudinal studies (e.g. pharmacological drug interventions).
