Effects of a 12-week, short-interval, intermittent, low-intensity, slow-jogging program on skeletal muscle, fat infiltration, and fitness in older adults: randomized controlled trial

Ikenaga, Masahiro; Yamada, Yosuke; Kose, Yujiro; Morimura, Kazuhiro; Higaki, Yasuki; Kiyonaga, Akira; Tanaka, Hiroaki

doi:10.1007/s00421-016-3493-9

Cited by 35 publications

(40 citation statements)

References 35 publications

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“…The innovative findings of this study were the significant increases on PhA and handgrip strength and decreases on %F in older women after a suspension exercise training program, regardless of age and BMI. Several studies have pointed out that traditional forms of physical activity, such as resistance and aerobic training, contribute to increased PhA and reduce fat mass in older adults [4,9,17]. To the authors' knowledge, this is the first study that investigated the effects of this new kind of training in a geriatric population.…”

Section: Discussionmentioning

confidence: 87%

Changes in Phase Angle and Handgrip Strength Induced by Suspension Training in Older Women

2018

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This study aimed to present a suspension exercise training program suitable for older adults and to verify the effect of 12 weeks of training on handgrip strength (HS) and anthropometric and bioelectrical impedance parameters in older adults. Thirty older women (age 66.1±4.7 years, BMI 30.6±5.3 kg/m) were randomly assigned to one of two groups: a training group (TG, n=15) or a control group (CG, n=15). The TG participated in a 12-week suspension training program, while the CG maintained their normal physical activity habits for the duration of the study. Anthropometric, bioelectrical impedance and strength parameters were evaluated before and after the intervention period. There was a significant group by time interaction (p<0.05) for triceps, biceps, subscapular skinfold, percentage of fat mass, phase angle (PhA), resistance, reactance, specific resistance, specific reactance and HS, with significant improvements in the TG after the intervention period (p<0.05) even after adjusting for age and BMI. The results suggest that suspension training promotes increases in PhA and HS in older women.

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Section: Discussionmentioning

confidence: 87%

Changes in Phase Angle and Handgrip Strength Induced by Suspension Training in Older Women

2018

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“…Less clear and definitive data exist on the efficacy of endurance training, let alone HIT , to abate IMAT infiltration in healthy elderly subjects. The benefits of low-intensity endurance training have been evaluated (Ikenaga et al, 2017); yet, the effectiveness of HIT is still unknown. Notwithstanding that the present study has been conducted on a small number of subjects, the data suggest that even short periods of high-intensity aerobic training may be effective to reduce IMAT in elderly healthy subjects.…”

Section: Discussionmentioning

confidence: 99%

Effects of High-Intensity Interval Training and Isoinertial Training on Leg Extensors Muscle Function, Structure, and Intermuscular Adipose Tissue in Older Adults

et al. 2019

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We compared the effects of aerobic high-intensity training (HIT) and isoinertial resistance training (IRT) on the strength, mass, architecture, intermuscular adipose tissue (IMAT) quality, and neuromuscular activation of the quadriceps in elderly subjects. Twelve healthy men (69.3 ± 4.2 years; 77.8 ± 10.4 kg; 1.72 ± 0.05 m) were exposed to 8 weeks of HIT (7 × 2-min cycling repetitions at 90% of trueV.O2peak, 3 times/week) and, after 4 months (detraining), to IRT (4 × 7 maximal concentric–eccentric knee extensions, 3 times/week). Before and after trainings, we measured knee extension isometric (TMVC) and dynamic (TC) maximal concentric torque, anatomical cross-sectional area (ACSA) at 25, 50, and 75% of femur length, quadriceps volume (Vol), IMAT, pennation angle (θp) of the fibers from the vastus lateralis, and voluntary activation (%Act). TMVC and TC were significantly larger only after IRT (P = 0.008); IRT was able to elicit a greater increase of ACSA than HIT; Vol increases similarly and significantly after HIT and IRT (P = 0.003–0.001); IMAT at 50% of femur length decreased after both HIT and IRT (P = 0.001–0.003); physiological cross-sectional area (PCSA) was larger after IRT than before (P = 0.025); specific torque did not change throughout the study (45.5 N cm–2 ± 12.0); %Act of the quadriceps was significantly affected only by IRT (P = 0.011). Both HIT and IRT are able to elicit beneficial modifications of muscular mass, architecture, and quality (reducing IMAT) in elderly subjects in connection with an amelioration of strength. HIT and IRT caused a homogeneous increase of ACSA and of Vol of the quadriceps. PCSA increases, but specific strength per unit of PCSA did not change. The increases of functional torque seemed to be attributed to a parallel increase of %Act and muscle hypertrophy only after IRT. Data suggest that IMAT may be a prominent indicator to track metabolic-dependent activity and skeletal muscle quality.

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“…(Table 2 about here)3.3. Summary measures (exposure)The effect of exercise interventions on myosteatosis was assessed through different measurements, including lipid infiltration(4,17,21,23,28,33), intramyocellular lipid content(25,34), muscle attenuation(10,17, 39, 49) or cross sectional area of low-and normal-density muscle(4,11).…”

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confidence: 99%

Effect of exercise on myosteatosis in adults: a systematic review and meta-analysis

Ramírez‐Vélez

Ezzatvar

Izquierdo

et al. 2021

Journal of Applied Physiology

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Muscle tissue typically contains only small amounts of adipose tissue, and the excess deposition of adiposity is considered a pathological phenomenon termed myosteatosis. Several studies have assessed the effects of exercise alone on the severity of myosteatosis, and some studies have reported promising results. We performed a systematic review and meta-analysis to investigate the effects of exercise interventions on myosteatosis (i.e., lipid infiltration and muscle attenuation). Studies were identified through a systematic search of three databases and limited to randomized controlled trials (RCTs) focused on evaluating the effect of exercise interventions on lipid infiltration and/or muscle attenuation in adults. Thirteen studies met the inclusion criteria and twelve were included in the meta-analysis (n = 465, 84.7% women). The volume of lipid infiltration was decreased in the exercise group compared to the control group (Hedges'g = -0.45 95% confidence interval [CI] -0.74 to -0.16, p = 0.008, I2= 0%), and the degree of muscle attenuation was increased (Hedges'g = 0.67 95% CI 0.22 to 1.13, p = 0.009, I2= 59.3%). Based on meta-regression analyses, there were no significant effects of mean age at baseline (lipid infiltration, β=-0.008 95% CI, -0.035 to 0.019; p=0.495; muscle attenuation, β=-0.013 95% CI, -0.036 to 0.011; p=0.248) and intervention duration (lipid infiltration, β=-0.008 95% CI, -0.028 to 0.010; p=0.311; muscle attenuation, β=-0.018 95% CI, -0.050 to 0.014; p=0.230) on the effect sizes estimates. Overall, our findings indicate that exercise can significantly improve muscle quality in populations at risk of developing obesity - and sarcopenia-related disability.

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Effects of a 12-week, short-interval, intermittent, low-intensity, slow-jogging program on skeletal muscle, fat infiltration, and fitness in older adults: randomized controlled trial

Abstract: The 12-week SJ program was easily performed by older adults with low skeletal muscle mass, improved aerobic capacity, muscle function, and muscle composition in older adults.

Cited by 35 publications

References 35 publications

Changes in Phase Angle and Handgrip Strength Induced by Suspension Training in Older Women

Changes in Phase Angle and Handgrip Strength Induced by Suspension Training in Older Women

Effects of High-Intensity Interval Training and Isoinertial Training on Leg Extensors Muscle Function, Structure, and Intermuscular Adipose Tissue in Older Adults

Effect of exercise on myosteatosis in adults: a systematic review and meta-analysis

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