Annals of Applied Sport Science

en The Effect of High Intensity Interval Training On Cardiopulmonary and Perceptual Responses in Overweight and Normal Weight College Students فيزيولوژی ورزشی و شاخه‌های وابسته بدان Sport Physiology and its related branches مقاله اصیل Original Article <div style="text-align: justify;">Background. Cardiopulmonary and perceptual responses to prolonged continuous exercise are well documented, yet how these responses evolve during brief high-intensity interval exercise (HIIT) in college students across weight categories remains unclear. Objectives. This study aims to quantify the effects of a 2-week, 8-session HIIT 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 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. This study found increased enjoyment and effectiveness over time in overweight students, suggesting a promising method to boost activity levels.</div> Body Mass Index (BMI), Cardiopulmonary Responses, HIIT, Overweight Adults, Perceptual Response 0 0 http://aassjournal.com/browse.php?a_code=A-11-2473-4&slc_lang=en&sid=1 Liu Kai kai990612@student.usm.my 100319475328460017574 0009-0004-2951-5961 No Exercise and Sport Science Program, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia Hairul Anuar Hashim hairulkb@usm.my 100319475328460017575 100319475328460017575 Yes Exercise and Sport Science Program, School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kota Bharu, Kelantan, Malaysia