Effects of Walk or Squat Training Combined with Restriction of Leg Muscle Blood Flow on Hip, Thigh and Calf Muscle Hypertrophy

2006 ◽  
Vol 38 (Supplement) ◽  
pp. S284-S285
Author(s):  
Takashi Abe ◽  
Charles F. Kearns ◽  
Tomohiro Yasuda ◽  
Yoshiaki Sato
Keyword(s):  
Blood Flow ◽  
Muscle Hypertrophy ◽  
Muscle Blood Flow ◽  
Calf Muscle ◽  
Leg Muscle

Blood flow response of human calf muscles to static contractions at various percentages of MVC

1981 ◽  
Vol 51 (4) ◽  
pp. 929-933 ◽  
Author(s):  
D. Richardson
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Plantar Flexion ◽  
Muscle Contractions ◽  
Calf Muscle ◽  
Flow Response ◽  
Steady State Levels ◽  
Age Range ◽  
Static Contractions ◽  
Male Subjects

Six male subjects within the age range of 20–35 yr consented to perform static calf muscle contractions at 7.5, 15, and 30% of their maximum voluntary contractile strength (MVC) for a period of 2 min each. Isometric contractions were performed in a sitting position by pressing the knee against a solid support plate via plantar flexion. Calf muscle blood flow (BF) was measured periodically before, during, and after each contraction by a Whitney gauge. Average resting BF was 3.9 ml . min-1 . 100 ml-1 of calf volume. During the 7.5, 15, and 30% MVC contractions, BF increased to steady-state levels of 7.2, 7.9, and 5.3 ml . min-1 . 100 ml-1, respectively. The values for 7.5 and 15% MVC were significantly higher than resting BF (P less than or equal to 0.05). The postcontraction hyperemia, measured as the area under the postcontraction BF curve, averaged 4.4, 10.1, and 23.2 ml/100 ml, respectively, for the 7.5, 15, and 30% MVC efforts. Comparison of these values with corresponding hyperemic volumes during contraction showed that the portions of the total BF response that occurred in the postcontraction periods were 41, 57, and 88%, respectively, for the 7.5, 15, and 30% efforts. These results demonstrate that during static calf muscle contractions BF increases by only a modest amount, and at even small forces of contraction a sizable portion of the total flow response occurs in the postcontraction period.

Skeletal Muscle Size And Strength Are Increased Following Walk Training With Restricted Leg Muscle Blood Flow: Effect Of Training Frequency

2009 ◽  
Vol 41 ◽  
pp. 474
Author(s):  
Takashi Abe ◽  
Charles F. Kearns ◽  
Satoshi Fujita ◽  
Mikako Sakamaki ◽  
Yoshiaki Sato ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Muscle Blood Flow ◽  
Muscle Size ◽  
Flow Effect ◽  
Training Frequency ◽  
Leg Muscle

Muscle size and strength are increased following walk training with restricted venous blood flow from the leg muscle, Kaatsu-walk training

2006 ◽  
Vol 100 (5) ◽  
pp. 1460-1466 ◽  
Author(s):  
Takashi Abe ◽  
Charles F. Kearns ◽  
Yoshiaki Sato
Keyword(s):  
Blood Flow ◽  
Oxygen Uptake ◽  
Muscle Hypertrophy ◽  
Venous Blood ◽  
Isometric Strength ◽  
Muscle Size ◽  
Venous Blood Flow ◽  
Strength Gain ◽  
Repetition Maximum ◽  
Leg Muscle

Previous studies have shown that low-intensity resistance training with restricted muscular venous blood flow (Kaatsu) causes muscle hypertrophy and strength gain. To investigate the effects of daily physical activity combined with Kaatsu, we examined the acute and chronic effects of walk training with and without Kaatsu on MRI-measured muscle size and maximum dynamic (one repetition maximum) and isometric strength, along with blood hormonal parameters. Nine men performed Kaatsu-walk training, and nine men performed walk training alone (control-walk). Training was conducted two times a day, 6 days/wk, for 3 wk using five sets of 2-min bouts (treadmill speed at 50 m/min), with a 1-min rest between bouts. Mean oxygen uptake during Kaatsu-walk and control-walk exercise was 19.5 (SD 3.6) and 17.2 % (SD 3.1) of treadmill-determined maximum oxygen uptake, respectively. Serum growth hormone was elevated ( P < 0.01) after acute Kaatsu-walk exercise but not in control-walk exercise. MRI-measured thigh muscle cross-sectional area and muscle volume increased by 4–7%, and one repetition maximum and maximum isometric strength increased by 8–10% in the Kaatsu-walk group. There was no change in muscle size and dynamic and isometric strength in the control-walk group. Indicators of muscle damage (creatine kinase and myoglobin) and resting anabolic hormones did not change in both groups. The results suggest that the combination of leg muscle blood flow restriction with slow-walk training induces muscle hypertrophy and strength gain, despite the minimal level of exercise intensity. Kaatsu-walk training may be a potentially useful method for promoting muscle hypertrophy, covering a wide range of the population, including the frail and elderly.

Acute Hormonal Responses To Restriction Of Leg Muscle Blood Flow During Walking

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S108 ◽  
Author(s):  
Takashi Abe ◽  
Yoshiaki Sato ◽  
Charles F. Kearns ◽  
Aiko Yoshitomi
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Hormonal Responses ◽  
Acute Hormonal Responses ◽  
Leg Muscle

Effects of contraction force and frequency on postexercise hyperemia in human calf muscles

1980 ◽  
Vol 49 (4) ◽  
pp. 649-654 ◽  
Author(s):  
D. Richardson ◽  
R. Shewchuk
Keyword(s):  
Blood Flow ◽  
Muscle Blood Flow ◽  
Maximum Voluntary Contraction ◽  
Voluntary Contraction ◽  
Calf Muscle ◽  
Contraction Force ◽  
A Value ◽  
True Blood ◽  
The Right ◽  
Human Calf

The purpose of this study was to examine the separate effects of contraction force and frequency on postexercise hyperemia in the human calf muscle. Nine male subjects were used. Each was seated in a chair with the right foot on a pedal coupled to a load cell and the knee secured. Calf muscle blood flow, measured by a Whitney gauge, was determined before and periodically after 3-pmin bouts of rhythmic isometric plantar-flexor exercise. The contraction frequency was graded from 20 to 50 to 80 contractions/min. The force per contraction was graded from 7.5 to 15 to 30% of maximum voluntary contraction (MVC) of the calf muscle. The average MCV was 502 lb. Peak postexercise blood flow (PBF) increased with either increasing frequency at a given force or increasing force at a given frequency. However, at the higher levels of exercise, PBF tended to plateau at a value of about 50 ml.min-1.100 ml-1. The plateau phase of PBF was associated with a substantial increase in the total volume of postexercise hyperemia. This appeared to be well above any repayment of a blood flow deficit. However, it is not certain that the extra volume represented the repayment of a true blood flow debt.

scholarly journals Calf muscle blood flow and oxygen consumption measured with near-infrared spectroscopy during venous occlusion

1999 ◽  
Author(s):  
Lelia A. Paunescu ◽  
Claudia Casavola ◽  
Maria-Angela Franceschini ◽  
Sergio Fantini ◽  
Lew Winter ◽  
...  
Keyword(s):  
Blood Flow ◽  
Oxygen Consumption ◽  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Blood Flow ◽  
Venous Occlusion ◽  
Calf Muscle
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