Physical inactivity in normal-weight and overweight individuals
Conditions
Interventions
Group 1: high-intensity interval training 90% vVO2max
Group 2: moderate intensity VT-1
Group 3: heavy intensity IAS
Group 4: self-paced
Sponsors
Sportmedizinisches Institut Saarbrücken
Eligibility
Sex/Gender
All
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Healthy, BMI 25 to 35, physically inactive, without significant risk factors. Training status: In the last 6 months no regular endurance (less than 1.5 hours per week) or strength training (less than 2 hours per week) or less than 2 hours per week of other exercise, no history of high-performance training
Exclusion criteria
Exclusion criteria: Internal or orthopedic conditions for which maximal exertion or running training is contraindicated. A relative maximal oxygen uptake of = 45 ml/min/kg (female) or = 50 ml/min/kg (male) will lead to exclusion, as these values are considered indicative of a trained status. Exclusion criteria also include: clinically significant anemia requiring treatment, resting blood pressure = 160/100 mmHg, total cholesterol level = 300 mg/dl, BMI > 35 kg/m², diagnosed neurological or psychiatric disorders, as well as claustrophobia or fear of masks. The use of medications that may directly influence study outcomes (e.g., beta blockers) will also result in exclusion, as will pregnancy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The aim of the study is to determine the perceived exertion, affective valence, action crisis, heart rate, oxygen uptake, and lactate concentration, as well as their interdependencies during four runs with different intensities but the same training dose. The perceptual assessment parameters are recorded at nine isocaloric time points using validated single-item scales. Heart rate and oxygen uptake are measured continuously via telemetry and breath-by-breath analysis, respectively, while lactate concentration is determined at four time points through capillary blood sampling. | — |
Secondary
| Measure | Time frame |
|---|---|
| Remembered enjoyment of exercise, predicted volition to engage in this training, self-regulation and automaticity | — |
Countries
Germany
Outcome results
None listed