Meal-Exercise Challenge and Physical Activity Reduction Impact on Immunity and Inflammation

NCT ID: NCT02027675

Last Updated: 2015-04-29

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 42 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-04-30
• Study Completion Date: 2014-09-30

Brief Summary

In a society where exercise is prescribed by physicians to increase physical condition, improve dietary habits and reduce cardiovascular risk, the impact of exercise, acute or chronic, and diet in inflammation and immunity is unknown. Specific populations can have different responses towards acute and chronic exercise. Moreover specific conditions, like the type of meal ingested, can interfere with these responses. The true effect of pre-competitive meal exercise in the immunity and inflammatory response is unknown. Acute physical inactivity periods, commonly happens during daily life, related to work or acute illness. New evidence points out that it induces immediate metabolic and endocrinological changes, these can might also be associated with changes in immune response.

Aims of this project are:

1. to assess the effect of the precompetitive meal on the inflammatory, neuro-immune and metabolic response to exercise;

2. to assess the effects of sedentary behaviour on inflammatory, neuro-immune and metabolic response;

3. to assess differences in changes between healthy, asthmatic and obese subjects

Detailed Description

Two interventions will be performed for assessing the research questions and aims:

A) Randomized cross-over, with a wash out period of 7 days, single-blinded trial where two different pre-competitive meals will be followed by an exercise challenge; inflammatory neuro-immune and metabolic response will be assessed before and after each challenge.

Participants will be recruited from advertisement and four different groups will be compared: obese-asthmatic; asthmatic non-obese; obese without asthma and non-asthmatic and non-obese. All patients will be allocated to a meal challenge in which a high fat poor micronutrient meal followed by a Mediterranean meal or vice-versa; meal challenge order will be randomized and participants will be blinded to the intervention. The main outcome for this intervention will be airway inflammation and lung function. All outcomes will be assessed before and 3h after each meal.

A group of individuals will, in the three hours after the meal, perform an exercise challenge, which is aimed to induce acute immune changes.

B) Randomized controlled trial where participants, after a run-in period and eligibility evaluation, will be allocated to an intervention consisting in a reduction of physical activity by 50% or maintaining habitual physical activity for two weeks; inflammatory neuro-immune and metabolic response will be assessed before and after intervention.

Conditions

Asthma; Obesity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Meal Exercise Challenge- Order 2

Two different meals,an high fat micronutrient poor meal and Mediterranean Meal will be followed by an exercise challenge and performed at different orders accordingly to the cross over design.

Group Type: EXPERIMENTAL

High fat poor micronutrient meal

Intervention Type: OTHER

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an high fat poor micronutrient meal.

Mediterranean meal

Intervention Type: OTHER

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an Mediterranean meal

Meal Exercise Challenge- Order 1

Two different meals,an high fat micronutrient poor meal and Mediterranean Meal will be followed by an exercise challenge and performed at different orders accordingly to the cross over design.

Each arm corresponds to a different intervention order.

Group Type: EXPERIMENTAL

High fat poor micronutrient meal

Intervention Type: OTHER

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an high fat poor micronutrient meal.

Mediterranean meal

Intervention Type: OTHER

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an Mediterranean meal

Interventions

High fat poor micronutrient meal

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an high fat poor micronutrient meal.

Intervention Type: OTHER

Mediterranean meal

The meal will be prepared by a team of nutritionist in order to comply with the demand characteristics of an Mediterranean meal

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• controlled mild to moderate asthma;
• Body mass index (BMI) ≥ 25 kg/m2; healthy participants (non asthmatic with a BMI 18,5 to 25 kg/m2) will be used for comparison;

Exclusion Criteria

• respiratory disease other than asthma;
• severe asthma according to Global Initiative for Asthma (GINA) guidelines
• occurrence in previous 4 weeks of screening of upper/lower respiratory tract infection;
• smoking in the past 6 months and requiring mechanical ventilation for respiratory event within 6 months of screening.
• Medical conditions (hematologic, cardiovascular, renal, hepatic, neurologic or metabolic) or medication that may interfere with meal or physical activity intervention;
• Significant chronic infectious diseases (eg, HIV, hepatitis B or C);
• Abnormal electrocardiogram screening, cardiac arrhythmia, angina, congestive heart failure; renal or hepatic failure and systemic disease, mal-absorption disease history or intestinal inflammatory disease;
• Women breast-feeding, pregnant or intending pregnancy during study

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 35 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Universidade do Porto

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Diana Silva, MD

Role: PRINCIPAL_INVESTIGATOR

Faculty of Medicine of Porto University

Rita Moreira

Role: PRINCIPAL_INVESTIGATOR

Faculty of Nutrition and Food Sciences of the University of Porto

Locations

Faculty of Nutrition and Food Sciences of the University of Porto

Porto, Porto District, Portugal

Faculty of Sports of Porto University

Porto, Porto District, Portugal

Faculty of Medicine of Porto University

Portugal, Porto District, Portugal

Countries

Portugal

Related Links

http://meriitproject.weebly.com/

Related Info

Other Identifiers

MERIIT project

Identifier Type: -

Identifier Source: org_study_id