Physiologic Adaptations to Interval and Continuous Running at Low Volume and Vigorous Intensity Over 14-Weeks.

NCT ID: NCT01816451

Last Updated: 2014-04-29

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 35 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-03-31
• Study Completion Date: 2012-12-31

Brief Summary

The purpose of this study was to verify physiological responses to constant-load (continuous) vs. variable-intensity (interval) during 14 weeks of aerobic exercise on active men. The hypothesis was that would be differences in physiological variables on distinct modes of execution performed on the treadmill over a period of 14 weeks of training.

Detailed Description

Initially there were thirty five subjects, but due factors outside the present study, three individuals were excluded from the program. Two individuals during maximal exercise test (VO2) showed clinical impairment test being interrupted by the doctor and the third individual presented a plantar fasciitis in the early familiarization. Thirty two healthy and active males volunteered to participate in the study. All subjects exercised habitually, with at least 1 year experience aerobic training. The Human Ethics Committee of Rio de Janeiro Federal University approved this study (no 58659/02471312.8.0000.5257).The subjects performed a total of nine visits to the laboratory of the Brazilian Navy at City of Rio de Janeiro for physical tests on different days, except between visits I-II and VII-III. The interval between visits was one week between visits II-III-IV and VIII-IX, six weeks between the first day of training and visits V, four weeks between V-VI-VIII. All subjects from interval and continuous groups performed a total of 46 sessions of supervised running program.

Conditions

Exhaustion - Physiological

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: FACTORIAL
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

interval

The running training for interval group were performed on a treadmill for a period of 14 weeks, with a frequency of three times a week, lasting 20-minutes per session thus completing 46 sessions of training. The intensity and volume of training both were adapted according to the recommendations of the American College of Sports Medicine. The interval training group intensities ranged between 84-87% of maximal heart rate (HRmax) (vigorous intensity), 88-93%HRmax (near maximum intensity) and 94-99% HRmax (maximum intensity).

Group Type: EXPERIMENTAL

running training

Intervention Type: OTHER

The present study was designed to compare the physiological effects between the two training regimes and the control group.The subjects from interval and continuous group performed others activities as resistance training, swimming or soccer. Those activities wasn't controlled by our study, but the individual didn't do physical activities at least 3 hours before started our running sessions. The control group simply performed their normal physical activities (resistance training, swimming or soccer). But, each 3 weeks we had a contact with control group to check about any injury or illness that could affect the final results. None were found.

continuous

The running training for continuous group were performed on a treadmill for a period of 14 weeks, with a frequency of three times a week, lasting 20-minutes per session thus completing 46 sessions of training. The intensity and volume of training both were adapted according to the recommendations of the American College of Sports Medicine.The continuous group ran at an intensity of \~87% of maximal heart rate (HRmax)

Group Type: EXPERIMENTAL

running training

Intervention Type: OTHER

The present study was designed to compare the physiological effects between the two training regimes and the control group.The subjects from interval and continuous group performed others activities as resistance training, swimming or soccer. Those activities wasn't controlled by our study, but the individual didn't do physical activities at least 3 hours before started our running sessions. The control group simply performed their normal physical activities (resistance training, swimming or soccer). But, each 3 weeks we had a contact with control group to check about any injury or illness that could affect the final results. None were found.

control

The control group did not do the running training program. Control did their normal physical activities.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

running training

The present study was designed to compare the physiological effects between the two training regimes and the control group.The subjects from interval and continuous group performed others activities as resistance training, swimming or soccer. Those activities wasn't controlled by our study, but the individual didn't do physical activities at least 3 hours before started our running sessions. The control group simply performed their normal physical activities (resistance training, swimming or soccer). But, each 3 weeks we had a contact with control group to check about any injury or illness that could affect the final results. None were found.

Intervention Type: OTHER

Other Intervention Names

Stochastic; aerobic; run

Eligibility Criteria

Inclusion Criteria

• self reporting no contraindication to high-intensity exercise.
• physically active on cardiorespiratory activities in a regular basis for at least six months.
• presence of negative responses on all items of the Questionnaire of Physical Activity Readiness (PAR-Q Test).

Exclusion Criteria

• make use of medication that may interfere with the results, especially inhibitors appetites and dietary supplements.
• presence of joint problems that prevents the achievement of training.
• presence of disorders such as diabetes, dyslipidemia and anemia
• have performed intense exercise with lowers members before the training sessions.

• Minimum Eligible Age: 25 Years
• Maximum Eligible Age: 32 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: No

Sponsors

University of Trás-os-Montes and Alto Douro

OTHER

Sponsor Role: lead

Responsible Party

Laura Castro de Garay

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Laura C Garay, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Trás-os-Montes and Alto Douro

Locations

CEFAN

Rio de Janeiro, Rio de Janeiro, Brazil

Countries

Brazil

Other Identifiers

UFRJ-2010

Identifier Type: -

Identifier Source: org_study_id