NCT03272737

Brief Summary

The purpose of the present study is to evaluate the acute and chronic effect of low intensity strength training with or without moderate blood flow restriction on muscle vasodilation and arterial stiffness in elders with low gait speed. In addition, the responses of prothrombotic factors in blood coagulation, the impact on heart rate and arterial pressure will be assessed.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
26

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Feb 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 11, 2017

Completed
2 months until next milestone

First Posted

Study publicly available on registry

September 6, 2017

Completed
5 months until next milestone

Study Start

First participant enrolled

February 4, 2018

Completed
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 4, 2020

Completed
1.6 years until next milestone

Study Completion

Last participant's last visit for all outcomes

January 4, 2022

Completed
Last Updated

February 11, 2022

Status Verified

March 1, 2020

Enrollment Period

2.3 years

First QC Date

July 11, 2017

Last Update Submit

February 10, 2022

Conditions

Keywords

KAATSUCardiovascular systemElderly

Outcome Measures

Primary Outcomes (1)

  • Anthropometric Assessment

    The body weight will be evaluated using the Filizola brand scale, with an accuracy of 0.1 kg. The stature will be obtained by means of the stadiometer coupled to the Filizola scale, with an accuracy of 0.5 cm. The BMI will be calculated from the weight ratio by height squared. For measures of circumference of the quadriceps, a tape measure of the brand Seca, with precision of 0.1 cm will be used. Anthropometric measurements will be made following the standardization of the International Society for Anthropometric Assessments (ISAK, 2001).

    Before and after 12 weeksof training

Secondary Outcomes (4)

  • Coagulation factors

    Before and after 12 weeksof training

  • Tolerability, adherence and adverse effects

    Before and after 12 weeks of training

  • Arterial pressure and heart rate

    Before and after 12 weeks of training

  • Speed Gait

    Before and after 12 weeks of training

Other Outcomes (2)

  • Plesthysmography

    Before and after 12 weeks of training

  • Pulse wave velocity

    Before and after 12 weeks of training

Study Arms (2)

Traditional strength exercise

ACTIVE COMPARATOR

This group will be carried out to knee extension exercise without blood flow restriction. Interventions: * Plethysmography; * Protocols of isometric exercise; * Pulse wave Velocity (PWV); * Flow-mediated dilatation (FMD); * Arterial pressure and blood pressure; * Quality of life (Euro Qol); * 1RM test * Speed gait test * Anthropometric Assessment

Procedure: 1RM TestProcedure: Speed gait testDevice: Venous occlusion plethysmography protocolDevice: Measurement of Arterial Stiffness - Pulse Wave Analysis and VelocityDevice: Isometric handgrip exercise protocolDevice: Vasodilatory capacityDevice: Basal blood flow and vasodilatory capacity - Flow mediated dilation (FMD)Diagnostic Test: Quality of Life EuroQol-5 DomainOther: Anthropometric Assessment

Strength exercise with KAATSU

ACTIVE COMPARATOR

This group will be carried out to knee extension exercise with partial blood flow restriction. Interventions: * Plethysmography; * Protocols of isometric exercise; * Pulse wave Velocity (PWV); * Flow-mediated dilatation (FMD); * Arterial pressure and blood pressure; * Quality of life (Euro Qol); * 1RM test * Speed gait test * Anthropometric Assessment

Procedure: 1RM TestProcedure: Speed gait testDevice: Venous occlusion plethysmography protocolDevice: Measurement of Arterial Stiffness - Pulse Wave Analysis and VelocityDevice: Isometric handgrip exercise protocolDevice: Vasodilatory capacityDevice: Basal blood flow and vasodilatory capacity - Flow mediated dilation (FMD)Diagnostic Test: Quality of Life EuroQol-5 DomainOther: Anthropometric Assessment

Interventions

1RM TestPROCEDURE

The dynamic force of the lower limb muscles will be evaluated by the maximal repetition of knee extension and leg press exercise, according to the protocol presented in a previous study \[37\]. The elderly will perform a warm up consisting of 1 series with 10 unloaded repetitions. After the warm up, the mass to be lifted will be progressively increased until the maximum load that can be lifted is reached, with a maximum limit of 5 attempts and a 3 to 5 minutes interval between them. The test will be conducted by a physical education professional who will verbally encourage participants throughout these steps and perform the load adjustment at week 5 and 10 (Radaelli, 2014).

Also known as: 1RM Test (Knee extension and Seated leg press)
Strength exercise with KAATSUTraditional strength exercise

To measure the gait speed of participants they will walk 4.6 metres and the time needed to cover this distance is measured. The mean of three attempts is recorded and divided by the distance. The participants included must achieve in the walking test an average of \< 0.,9 m/s (Guralnik, 1994).

Strength exercise with KAATSUTraditional strength exercise

A mercury-filled silastic tube, connected to a low-pressure transducer and a plethysmograph (D.E. Hokanson), will be placed around the largest circumference of the calf region. One cuff will be placed around the ankle and another around the thigh. The ankle cuff will be inflated to a supra-systolic pressure 30 seconds before starting the measurements. At 15-second intervals, the cuff around the thigh will be inflated above the venous pressure for a period of seven to eight seconds. Increased tension in the silastic tube reflects an increase in leg volume and vasodilation. The signal of the muscle blood flow wave will be recorded on a polygraph and analysed every minute, averaging three records per minute. The protocol will be performed during 5 minutes of rest, 3 minutes isometric exercise and 2 minutes of recovery (Bahia, 2006).

Strength exercise with KAATSUTraditional strength exercise

Arterial stiffness will be estimated from the carotid-femoral aortic pulse wave velocity \[33\]. Carotid-femoral aortic pulse waves will be recorded by tonometry (SphygmoCor, AtCor Medical, Australia). At the same time, an electrocardiogram will be obtained to calculate the wave transit time. Two distances will be measured: the recording point of the carotid artery and the sternal furcula (distance 1) and the sternal furcula and the recording point in the femoral artery (distance 2). The distance travelled by the pulse wave will be calculated as "distance 2" - "distance 1". The carotid-femoral aortic pulse wave velocity will be calculated as: carotid-femoral aortic pulse wave velocity = ¼ \* distance travelled by the pulse wave (m) / transit time(s).

Strength exercise with KAATSUTraditional strength exercise

In a supine position, the maximal voluntary handgrip force will be determined as the highest force in 3 consecutive attempts using a Jamar hydraulic palmar dynamometer (Asimow Engineering, CAL, USA). For activation of the central command, mechanoreceptors and muscular metaboreceptors the individual will perform, after 5 minutes of rest (baseline records), 3 minutes of exercise at 30% MVC. This manoeuvre isolates the activation of muscle metaboreceptors, observing the selective activation of these. After the isometric handgrip exercise, 2 minutes of recovery will be performed. Throughout the protocol muscle blood flow, blood pressure and heart rate will be recorded.

Strength exercise with KAATSUTraditional strength exercise

The vasodilatory capacity will be calculated as the percentage of increase of the diameter of the brachial artery and femoral post occlusion in relation to its basal values.

Strength exercise with KAATSUTraditional strength exercise

Images of the brachial artery will be recorded by a two-dimensional ultrasonography device with a spectral Doppler and linear transducer (Ultra-0122, Philips, The Netherlands).

Strength exercise with KAATSUTraditional strength exercise

This questionnaire is used to estimate the quality of life in participants before and after the study.

Strength exercise with KAATSUTraditional strength exercise

Anthropometric measurements will be made before and after the training program following the standardization of the International Society for Anthropometric Assessments. The body mass will be measured with an accuracy of 0.1 kg (Filizola). The stature will be obtained by means of the stadiometer with an accuracy of 0.5 cm. The BMI will be calculated as body mass divided by height squared. The circumference of the quadriceps will be measured with a tape measure (Seca) with a precision of 0.1 cm.

Strength exercise with KAATSUTraditional strength exercise

Eligibility Criteria

Age60 Years - 85 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Elderly people aged 60 to 85 years, with walking speed \<0.8m / s (Guralnik, 1994).

You may not qualify if:

  • Elderly patients with uncontrolled diabetes mellitus or peripheral neuropathy;
  • Symptomatic peripheral obstructive arterial disease or brachial ankle index \<0.9;
  • Uncontrolled arterial hypertension (BP\> 160 / 100mmHg);
  • Uncontrolled dyslipidemia (total colostrum\> 220mg / dL);
  • Infectious with less than 1 month;
  • Osteoarticular or neurological problems that prevent training;
  • History of anemia, cerebrovascular disease, myocardial infarction in the last 6 months;
  • Pior deep venous thrombosis;
  • Use of oral anticoagulant;
  • Smoking \<6 months;
  • Use of antiplatelet agents and anticoagulants;
  • Cognitive dysfunctions: Mini-mental \<24. (Brucki, 2003).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Instituto Israelita de Ensino e Pesquisa Albert Einstein 's (IIEP)

São Paulo, São Paulo, 05652-000, Brazil

Location

Related Publications (66)

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    BACKGROUND
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    RESULT
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    RESULT
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    RESULT
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    RESULT
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  • Wernbom, M. Effects of an acute bout of low-load resistance training with blood flow restriction. 2011. 206 f. Dissertation. The Norwegian School of Sports Sciences. Noruega. 2011.

    RESULT
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    RESULT
  • Wu IC, Lin CC, Hsiung CA. Emerging roles of frailty and inflammaging in risk assessment of age-related chronic diseases in older adults: the intersection between aging biology and personalized medicine. Biomedicine (Taipei). 2015;5(1):1. doi: 10.7603/s40681-015-0001-1. Epub 2015 Feb 2.

  • Yasuda T, Loenneke JP, Thiebaud RS, Abe T. Effects of blood flow restricted low-intensity concentric or eccentric training on muscle size and strength. PLoS One. 2012;7(12):e52843. doi: 10.1371/journal.pone.0052843. Epub 2012 Dec 31.

  • Yasuda T, Fukumura K, Iida H, Nakajima T. Effects of detraining after blood flow-restricted low-load elastic band training on muscle size and arterial stiffness in older women. Springerplus. 2015 Jul 15;4:348. doi: 10.1186/s40064-015-1132-2. eCollection 2015.

  • Yasuda T, Fukumura K, Uchida Y, Koshi H, Iida H, Masamune K, Yamasoba T, Sato Y, Nakajima T. Effects of Low-Load, Elastic Band Resistance Training Combined With Blood Flow Restriction on Muscle Size and Arterial Stiffness in Older Adults. J Gerontol A Biol Sci Med Sci. 2015 Aug;70(8):950-8. doi: 10.1093/gerona/glu084. Epub 2014 Jun 10.

  • Yokokawa Y, Hongo M, Urayama H, Nishimura T, Kai I. Effects of low-intensity resistance exercise with vascular occlusion on physical function in healthy elderly people. Biosci Trends. 2008 Jun;2(3):117-23.

  • Nakajima, T.; Morita, T.; Sato, Y. Key considerations when conducting KAATSU training. International Journal of Kaatsu Training Research. 2011. v. 7. p. 1-6.

    RESULT
  • Amorim S, Degens H, Passos Gaspar A, De Matos LDNJ. The Effects of Resistance Exercise With Blood Flow Restriction on Flow-Mediated Dilation and Arterial Stiffness in Elderly People With Low Gait Speed: Protocol for a Randomized Controlled Trial. JMIR Res Protoc. 2019 Nov 1;8(11):e14691. doi: 10.2196/14691.

Study Officials

  • Luciana D Janot, Phd

    Hospital Israelita Albert Einstein

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Group 1: Blood flow restriction + low intensity strength exercise Group 2: Low intensity strength exercise
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 11, 2017

First Posted

September 6, 2017

Study Start

February 4, 2018

Primary Completion

June 4, 2020

Study Completion

January 4, 2022

Last Updated

February 11, 2022

Record last verified: 2020-03

Data Sharing

IPD Sharing
Will not share

Locations