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NCT Number: NCT04155827

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

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.

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Key information

Conditions

Overweight and Obesity Body Weight Nutrition Disorders Nutritional and Metabolic Diseases Obesity Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–25 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Universiti Tunku Abdul Rahman

Kajang, Selangor, 43000, Malaysia

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

SIT

Other

Sprint interval training of 4*4, with 30 seconds of all out workout followed by 4 minutes of active recovery for 4 cycles.

Primary outcomes

  1. BMI for change

    Time frame: At baseline (before intervention begin) and post training (end of 6 weeks).

  2. Waist Circumference for change

    Time frame: At baseline (before intervention begin) and post training (end of 6 weeks).

  3. Total Fat % for change

    Time frame: At baseline (before intervention begin) and post training (end of 6 weeks).

  4. Lean Muscle Mass for change

    Time frame: At baseline (before intervention begin) and post training (end of 6 weeks).

  5. skin Fold Measurement for change

    Time frame: At baseline (before intervention begin) and post training (end of 6 weeks).

Sponsors and collaborators

Lead sponsor

Universiti Tunku Abdul Rahman

Other

Registry information

Official study title

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

Important dates

Study start
2020
Primary completion
2020
Study completion
2020
First posted
Nov 7, 2019
Registry last updated
Nov 24, 2020

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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