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1- Exercise and Sport Science Program, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia.
2- Exercise and Sport Science Program, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia. ,hairulkb@usm.my
2- Exercise and Sport Science Program, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia. ,
Abstract: (9 Views)
Background. Cardiopulmonary and perceptual responses to prolonged continuous exercise are well documented, yet how these responses evolve during brief high-intensity interval exercise (HIIE) in college students across weight categories remains unclear.
Objectives. The aim of this study is to quantify the effects of a 2-week, 8-session HIIE intervention on cardiorespiratory fitness and perceptual responses in overweight versus normal-weight college students.
Methods. Thirty inactive participants (age 20.4 ± 1.6 y; baseline body-mass 66.6 ± 14.4 kg; BMI 25.3 ± 4.4 kg·m⁻²) were stratified into Normal-weight (n=13; BMI 23.99 ± 4.27 kg·m⁻²) and Overweight (n=17; BMI 26.39 ± 4.35 kg·m⁻²) groups. Each session comprised of 8–10 × 1-min work intervals at 90% maximal aerobic speed (MAS) with 75 s self-paced walking recovery. Cardiorespiratory fitness (20-m shuttle-run estimated VO₂max), body composition, heart rate (HR), Rating of Perceived Exertion (RPE), Feeling Scale (FS), and Physical Activity Enjoyment Scale (PACES) were assessed pre- and post-intervention.
Results. Overweight participants reduced body-mass by 1.3 kg (95% CI –2.0, –0.6; ES=0.28), waist circumference by 2.7 cm (–4.1, –1.3; ES=0.39), and fat mass by 1.1% (–1.8, –0.4; ES=0.31) compared with negligible changes in the Normal-weight group (all between-group P<0.05). Estimated VO₂max rose 9.8% in the Overweight group (+3.3 mL·kg⁻¹·min⁻¹; P=0.00, ES=0.24) versus 4.7 % in the Normal-weight group (+1.5 mL·kg⁻¹·min⁻¹; P=0.00, ES=0.18). Mean HR during work intervals was 9–10 b·min⁻¹ higher in the Overweight group across sessions (P<0.001, ES=0.51–0.53). FS scores improved by +1.2 ± 0.8 units in overweight and +0.6 ± 0.7 units in Normal-weight from session 1 to session 8 (time effect P<0.01). PACES enjoyment increased by 18% in overweight (+12 points, ES=0.41) and 10% in Normal-weight (+7 points, ES=0.22). No adverse events were reported, and compliance was 100%.
Conclusion. In conclusion, this study found increased enjoyment and effectiveness over time in overweight students, suggesting a promising method to boost activity levels.
Objectives. The aim of this study is to quantify the effects of a 2-week, 8-session HIIE intervention on cardiorespiratory fitness and perceptual responses in overweight versus normal-weight college students.
Methods. Thirty inactive participants (age 20.4 ± 1.6 y; baseline body-mass 66.6 ± 14.4 kg; BMI 25.3 ± 4.4 kg·m⁻²) were stratified into Normal-weight (n=13; BMI 23.99 ± 4.27 kg·m⁻²) and Overweight (n=17; BMI 26.39 ± 4.35 kg·m⁻²) groups. Each session comprised of 8–10 × 1-min work intervals at 90% maximal aerobic speed (MAS) with 75 s self-paced walking recovery. Cardiorespiratory fitness (20-m shuttle-run estimated VO₂max), body composition, heart rate (HR), Rating of Perceived Exertion (RPE), Feeling Scale (FS), and Physical Activity Enjoyment Scale (PACES) were assessed pre- and post-intervention.
Results. Overweight participants reduced body-mass by 1.3 kg (95% CI –2.0, –0.6; ES=0.28), waist circumference by 2.7 cm (–4.1, –1.3; ES=0.39), and fat mass by 1.1% (–1.8, –0.4; ES=0.31) compared with negligible changes in the Normal-weight group (all between-group P<0.05). Estimated VO₂max rose 9.8% in the Overweight group (+3.3 mL·kg⁻¹·min⁻¹; P=0.00, ES=0.24) versus 4.7 % in the Normal-weight group (+1.5 mL·kg⁻¹·min⁻¹; P=0.00, ES=0.18). Mean HR during work intervals was 9–10 b·min⁻¹ higher in the Overweight group across sessions (P<0.001, ES=0.51–0.53). FS scores improved by +1.2 ± 0.8 units in overweight and +0.6 ± 0.7 units in Normal-weight from session 1 to session 8 (time effect P<0.01). PACES enjoyment increased by 18% in overweight (+12 points, ES=0.41) and 10% in Normal-weight (+7 points, ES=0.22). No adverse events were reported, and compliance was 100%.
Conclusion. In conclusion, this study found increased enjoyment and effectiveness over time in overweight students, suggesting a promising method to boost activity levels.
Keywords: Body Mass Index (BMI), Cardiopulmonary Responses, High Intensity Interval Training (HIIT), Overweight Adults, Perceptual Response.
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APPLICABLE REMARKS
APPLICABLE REMARKS
- A 2-week HIIE training can be used to improve estimated VO₂max and body-composition indices among overweight college students.
- Affective responses become more positive as individuals become familiar with the HIIE.
- A field-based HIIE can be a time-efficient strategy to enhance cardiorespiratory fitness and affective valence.
Type of Study: Original Article |
Subject:
Sport Physiology and its related branches
Received: 2025/06/8 | Accepted: 2025/09/12
Received: 2025/06/8 | Accepted: 2025/09/12
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