NCT02939768

Brief Summary

Background: Type 1 diabetes mellitus (T1DM) is characterized by the destruction of β cells and consequent loss of insulin secretion due an autoimmune process, being associated with increased cardiovascular risk, oxidative stress and inflammation. Considering that most people with T1DM do not reach recommended levels of physical activity due to concern about the rapid drop in blood sugar and the excuse of "lack of time", shorter sessions of exercise that provide several benefits should be encouraged. Thus, this work aims to compare the effects of high-intensity interval training (HIIT), strength training (ST) and both interventions on several blood markers and functional parameters in T1DM patients. Study hypothesis: (1) ST+HIIT will be more beneficial than HIIT, which in turn will be more beneficial than ST, on modification of blood levels of pro and anti-inflammatory, pro and antioxidant, lipid, renal and glucose metabolism parameters and (2) ST+HIIT will be more beneficial than HIIT, which in turn will be more beneficial than ST, on modification of functional parameters, body composition and maximal oxygen uptake.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
28

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Aug 2016

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

Study Start

First participant enrolled

August 1, 2016

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

October 18, 2016

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 20, 2016

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2017

Completed
Last Updated

November 8, 2017

Status Verified

November 1, 2017

Enrollment Period

1.3 years

First QC Date

October 18, 2016

Last Update Submit

November 6, 2017

Conditions

Outcome Measures

Primary Outcomes (3)

  • Glycated haemoglobin (HbA1c)

    HbA1c levels will be determined in the automated analyzer.

    End of 10-week exercise period

  • Tumor necrosis factor alpha (TNF-α)

    The plasma levels of TNF-α will be determined by enzyme-linked immunosorbent assay using commercial kits for human, according to manufacturer's instructions.

    End of 10-week exercise period

  • Mitochondrial superoxide dismutase (MnSOD) activity

    MnSOD isoform activity will be measured spectrophotometrically in mononuclear cells supernatants, according to a method previously described.

    End of 10-week exercise period

Study Arms (2)

Exercise training protocols

EXPERIMENTAL

Participants will be randomized in one of three groups: HIIT, ST or ST combined with HIIT (ST+HIIT). Each training protocol will last 10 weeks, being the initial two weeks designed to participants' gradual adaptations to respective training protocol, with sessions performed three times per week in non-consecutive days.

Other: High-intensity interval training (HIIT)Other: Strength training (ST)Other: ST combined with HIIT (ST+HIIT)

Control period

NO INTERVENTION

Before interventions (exercise training protocols), all participants will participate of a control period lasting one month, where participants will be encouraged to maintain their habitual lifestyle and usual diet habits.

Interventions

The HIIT sessions will be performed on cycle ergometers and will be consisted of 10 x 60-s cycling intervals interspersed with 60 s recovery. Individual workloads will be selected to elicit \~90% maximal heart rate attained in the cardiorespiratory fitness test (HRmax). A passive or active recovery will be given among high-intensity stimulus. Each training session will include 3-min warm-up and 2-min cool-down phase performed \~50% (HRmax), totalling 25 min. This intervention will last 10 weeks.

Exercise training protocols

ST protocol will consist of three sets performed at maximum weight that participants could move eight times with good technique in the following exercises: supine bench press (pectoralis major), leg press (quadriceps, biceps femoris, gluteus maximus), lat pulldown (latissimus dorsi), leg extension (quadriceps), shoulder press (deltoids), leg curl (biceps femoris) and abdominal crunch (abdominal muscles). It will be given 1-min rest between series, totalizing approximately 35 min of ST. This intervention will last 10 weeks.

Exercise training protocols

Participants in the ST+HIIT group will execute ST and HIIT (in this order) above described in the same training session, lasting approximately 60 min. This intervention will last 10 weeks.

Exercise training protocols

Eligibility Criteria

Age18 Years - 40 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • HbA1c \< 10%;
  • Have lived with T1DM for at least four years;
  • Physically inactive status (\< 150 min of self-reported structured physical activity per week in the previous three months).

You may not qualify if:

  • Creatinine \> 1,3 mg/dL;
  • Cardiovascular diseases;
  • Retinopathy;
  • Severe musculoskeletal injuries;
  • Recent infections;
  • Use of antioxidant supplements.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Universidade Federal do Rio Grande do Sul

Porto Alegre, Rio Grande do Sul, Brazil

Location

Related Publications (2)

  • Eckstein ML, Farinha JB, McCarthy O, West DJ, Yardley JE, Bally L, Zueger T, Stettler C, Boff W, Reischak-Oliveira A, Riddell MC, Zaharieva DP, Pieber TR, Muller A, Birnbaumer P, Aziz F, Brugnara L, Haahr H, Zijlstra E, Heise T, Sourij H, Roden M, Hofmann P, Bracken RM, Pesta D, Moser O. Differences in Physiological Responses to Cardiopulmonary Exercise Testing in Adults With and Without Type 1 Diabetes: A Pooled Analysis. Diabetes Care. 2021 Jan;44(1):240-247. doi: 10.2337/dc20-1496. Epub 2020 Nov 12.

  • Farinha JB, Ramis TR, Vieira AF, Macedo RCO, Rodrigues-Krause J, Boeno FP, Schroeder HT, Muller CH, Boff W, Krause M, De Bittencourt PIH Jr, Reischak-Oliveira A. Glycemic, inflammatory and oxidative stress responses to different high-intensity training protocols in type 1 diabetes: A randomized clinical trial. J Diabetes Complications. 2018 Dec;32(12):1124-1132. doi: 10.1016/j.jdiacomp.2018.09.008. Epub 2018 Sep 19.

MeSH Terms

Conditions

Diabetes Mellitus, Type 1

Interventions

High-Intensity Interval TrainingResistance Training

Condition Hierarchy (Ancestors)

Diabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesAutoimmune DiseasesImmune System Diseases

Intervention Hierarchy (Ancestors)

Physical Conditioning, HumanExerciseMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological PhenomenaExercise TherapyRehabilitationAftercareContinuity of Patient CarePatient CareTherapeuticsPhysical Therapy Modalities

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

October 18, 2016

First Posted

October 20, 2016

Study Start

August 1, 2016

Primary Completion

November 1, 2017

Study Completion

November 1, 2017

Last Updated

November 8, 2017

Record last verified: 2017-11

Data Sharing

IPD Sharing
Will not share

Locations