Gender Specific Responses of Overweight and Obese Adults to Sprint Interval Training

Gender Specific Responses of Overweight and Obese Adults to Sprint Interval Training on Anthropometric Variables

Overweight and Obesity is a growing health problem worldwide. Lifestyle changes such as decreased physical activity, increased sedentary behaviour and unhealthy eating habits has contribute to this problem. According to World Health Organization (2016), more than 1.9 billion adults aged 18 years and older were overweight (39% of men and 40% of women).Regular exercise is the key contributor to energy expenditure and is essential for energy balance and weight control. Interval training (IT) has been commonly used for decades with purpose to improve body health and reduce weight loss and this exercise differs from the conventional aerobic exercise and endurance exercise as IT typically involves repeated bouts of relatively intense exercise interspersed by periods of lower- intensity effort or complete rest for recovery. One of the most common type of IT is sprint interval training (SIT). SIT involves 'supramaximal' effort (>100% VO2max) work bouts, traditionally structured as four to six 30s all-out effort and each round separated by 4 minutes of recovery period of a low intensity exercise. Potential physiological adaptation of SIT are highlighted by various studies reporting cardiovascular, skeletal muscle adaptations, increase fat oxidation that facilitate increases in both aerobic and anaerobic performance. In addition, SIT is able to improve maximal rate of oxygen consumption (VO2max), at the same time improving the peripheral vascular structure and function, enzymes of fat metabolism and increases insulin sensitivity. Previous SIT studies have included young healthy men and women, healthy obese young women, all of which have shown that SIT is effective for fat loss and improvement of some health parameters. However, whether SIT protocol is equally effective in improving the anthropometric measures in men and women remain unknown.

Study Overview

• Status: Completed
• Conditions: Overweight and Obesity
• Intervention / Treatment: Other: SIT

Detailed Description

Total of 80 eligible male (n=40) and female (n=40) young adults will be equally recruited using block randomization and chosen based on the inclusion and exclusion criteria. Before the study, all participants will be informed of the potential risks and benefits of the study. During the study period, participants will be instructed to avoid any form of physical activity besides the study protocol. Both groups will perform SIT protocol on a electromagnetically braked cycle ergometer three times per week for 6 weeks. Every session, participants start with a 5 minutes warm up at 50- 60% of heart rate maximum (HRmax) and follow by four 30-s all out bouts intersperse with 4 minutes of recovery (passive or no load cycling). For confirmation of all-out effort, participant are required to maintain his or her cycling cadence at least 60 rpm or above. Intervention will end with a 5 minutes cool down at 50- 60% of HRmax. Total duration for each session will be 28 minutes. If a participant misses fewer than three sessions per week non- consecutively, the sessions missed will be replace at the end of period. However, if participants misses three or more sessions, he or she will be excluded from the study. Outcome measures will be assessed at baseline and at end of 6 weeks of intervention.

• Study Type: Interventional
• Enrollment (Actual): 35
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Malaysia
  • Selangor
    • Kajang, Selangor, Malaysia, 43000
      • Universiti Tunku Abdul Rahman

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 25 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• BMI≧23kg/m2(WHO for Asia-Pacific region)
• No history of metabolic, hormonal, orthopedic, or cardiovascular diseases
• No current use of prescribed medication including oral contraception

Exclusion Criteria:

• Contraindications to physical activity assessed by Physical Activity Readiness Questionnaire-PAR-Q
• Undergoes any surgical or hormone treatment

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: SIT for males	Other: SIT; Sprint interval training of 4*4, with 30 seconds of all out workout followed by 4 minutes of active recovery for 4 cycles.
Experimental: SIT for females	Other: SIT; Sprint interval training of 4*4, with 30 seconds of all out workout followed by 4 minutes of active recovery for 4 cycles.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
BMI for change	At baseline (before intervention begin) and post training (end of 6 weeks).
Waist Circumference for change	At baseline (before intervention begin) and post training (end of 6 weeks).
Total Fat % for change	At baseline (before intervention begin) and post training (end of 6 weeks).
Lean Muscle Mass for change	At baseline (before intervention begin) and post training (end of 6 weeks).
skin Fold Measurement for change	At baseline (before intervention begin) and post training (end of 6 weeks).

Collaborators and Investigators

• Sponsor: Universiti Tunku Abdul Rahman

Study record dates

Study Major Dates

• Study Start (Actual): February 4, 2020
• Primary Completion (Actual): November 16, 2020
• Study Completion (Actual): November 23, 2020

Study Registration Dates

• First Submitted: November 4, 2019
• First Submitted That Met QC Criteria: November 5, 2019
• First Posted (Actual): November 7, 2019

Study Record Updates

• Last Update Posted (Actual): November 24, 2020
• Last Update Submitted That Met QC Criteria: November 22, 2020
• Last Verified: November 1, 2020

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Body Weight; Overweight
• Other Study ID Numbers: UMFB1001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No