Effects of low-intensity resistance training with slow lifting and lowering on vascular function

Obesity is associated with early cardiovascular dysfunction and reduced muscle strength. Whole-body vibration (WBV) training may improve arterial function and muscle strength. The effects of WBV training on arterial stiffness (brachial-ankle pulse wave velocity, baPWV), wave reflection (augmentation index, AIx), brachial systolic blood pressure (bSBP), aortic systolic blood pressure (aSBP), heart rate variability, and muscle strength (one-repetition maximum, 1RM) were examined in 10 young (21 ± 2 year) overweight/obese women (body mass index, BMI¼29.9 ± 0.8 kg m -2 ). Participants were randomized to a 6-week WBV training or non-exercising control (CON) period in a crossover design. WBV training (3 daysÂweek) consisted of static and dynamic squats and calf raises with vibration intensity at 25-30 Hz and 1-2 mm amplitude (2.83-4.86 G). There were significant (Po0.05) decreases in baPWV (À0.9±0.3 m s -1 ), AIx (À8.0±2.2 %), bSBP (À5.3±1.5 mm Hg), aSBP (À5.2 ± 2.1 mm Hg), low-frequency power (À0.13 ± 0.05 nu) and sympathovagal balance (LF/HF, À0.42 ± 0.16) after WBV training compared with CON. Significant (Po0.05) increases in high-frequency power (HF, 0.19 ± 0.04 nu) and leg extension 1RM (8.2±2.3 kg) occurred after WBV training compared with CON. Six weeks of WBV training decreased systemic arterial stiffness and aSBP via improvements in wave reflection and sympathovagal balance in young overweight/obese normotensive women. WBV training may benefit arterial function and muscle strength in deconditioned individuals who cannot perform conventional exercise.

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“…A previous study was used to estimate that 10 subjects would enable 80% power to detect an 8% decrease in baPWV. 28 …”

Section: Statistical Analysesmentioning

confidence: 99%

Whole-body vibration training reduces arterial stiffness, blood pressure and sympathovagal balance in young overweight/obese women

et al. 2012

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“…In contrast, habitual moderateintensity resistance training does not reduce central arterial compliance in middle-aged and older adults (Cortez-Cooper et al 2008) and does not alter arterial stiffness in middleaged women (Yoshizawa et al 2009). It has been suggested that low-intensity resistance training with ''slow'' lifting and lowering exerts a beneficial effect on vascular function (Okamoto et al 2008). Low-intensity resistance training with ''normal'' lifting and lowering also is one of the alternatives.…”

Section: Introductionmentioning

confidence: 99%

Effect of low-intensity resistance training on arterial function

2010

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Although high-intensity resistance training increases central arterial stiffness, moderate-intensity resistance training does not. However, the effects of low-intensity resistance training on arterial stiffness are unknown. The aim of this study was to investigate the effect of low-intensity resistance training with short inter-set rest period (LSR) on arterial stiffness. Twenty-six young healthy subjects were randomly assigned to training (10 males, 3 females) and control groups (9 males, 4 females). The subjects performed LSR twice a week at 50% of one repetition maximum for 10 weeks. Training consisted of five sets of ten repetitions with an inter-set rest period of 30 s. Changes in brachial-ankle pulse wave velocity (baPWV) and brachial flow-mediated dilation (FMD) were assessed before and after the intervention period. After the intervention period, one repetition maximum strength increased (by 9-38%, P < 0.05 to <0.001; increases varied among the exercise types), baPWV decreased (from 1,093 ± 148 to 1,020 ± 128 cm/s, P < 0.05), and brachial FMD increased (from 9.7 ± 1.3 to 11.8 ± 1.9%, P < 0.05). These values did not change in the control group. These results suggest that LSR reduced arterial stiffness and improved vascular endothelial function.

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“…, 2001; Tanimoto & Ishii, 2006). Moreover, we recently demonstrated that although training intervention during 8 week by LSL increases muscular strength, it could prevent the stiffening of arteries (Okamoto et al. , 2008a).…”

Section: Introductionmentioning

confidence: 99%

“…, 1988; Rubanyi & Polokoff, 1994; Miyauchi & Masaki, 1999), having a potent vasoconstrictor effect. ET‐1 functions as a potent vasoconstrictor in vivo and its activation causes a sustained vasoconstriction and resultant increase in arterial blood pressure (Okamoto et al. , 2008a,b).…”

Section: Introductionmentioning

confidence: 99%

Low‐intensity resistance exercise with slow lifting and lowering does not increase noradrenalin and cardiovascular responses

Okamoto

Masuhara

Ikuta

2008

Clin Physio Funct Imaging

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The aim of this study was to investigate the effect of low-intensity resistance exercise with slow lifting and lowering (LSL) on plasma endothelin-1 (ET-1) and noradrenalin concentrations in young healthy adults. Eight healthy males participated in this study (age 19.0 +/- 0.5 years, mean +/- SD). The LSL performed the 10 repetitions with 3 s eccentric (lowering phase) and 3 s concentric (lifting phase) muscle actions. The high-intensity resistance exercise with normal lifting and lowering (HNL) performed the 10 repetitions with 1 s eccentric (lowering phase) and 1 s concentric (lifting phase) muscle actions. The load was set to 40% of one repetition maximal (1RM) for LSL and 80% of 1RM for HNL. Plasma ET-1 and noradrenalin concentrations were measured before and after each type of exercise. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse pressure (PP) and heart rate (HR) during LSL and HNL were measured. The rate-pressure product (RPP) was calculated from SBP and HR. There were no significant differences in the plasma ET-1 concentration between LSL and HNL. However, the plasma noradrenalin concentration was significantly increased after HNL, compared with LSL (P<0.001). SBP, DBP, PP, MAP, HR and RPP during LSL were significantly lower compared with HNL (P<0.05: PP and HR; P<0.01: RPP; P<0.001: SBP, DBP and MAP). These results suggested that LSL may suppress the increase in plasma noradrenalin concentrations and cardiovascular responses.

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Effects of low-intensity resistance training with slow lifting and lowering on vascular function

Cited by 28 publications

References 13 publications

Whole-body vibration training reduces arterial stiffness, blood pressure and sympathovagal balance in young overweight/obese women

Whole-body vibration training reduces arterial stiffness, blood pressure and sympathovagal balance in young overweight/obese women

Effect of low-intensity resistance training on arterial function

Low‐intensity resistance exercise with slow lifting and lowering does not increase noradrenalin and cardiovascular responses

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