V̇O2peak estimation in people with overweight and obesity before and after a 14-week lifestyle intervention
Performance · V̇O2peak agreementResult — go to the resultbias 0.3 ± 1.0 ml·min-1·kg-1Authors' conclusion
The SCG method is accurate for estimating V̇O2peak and appropriate for detecting group changes in both relative and absolute V̇O2peak following a lifestyle intervention in people with overweight and obesity. Furthermore, the method can detect individual changes in V̇O2peak but not independently of body mass changes. Yet, the applicability is still limited by the relatively large variation in LoA and SEE.
Study context
- Population
- Men and women aged 18–70 years with BMI 25–50 kg·m-2 (overweight and obesity) attending a 14-week lifestyle course at a Folk high school52 at follow-up
- Participants
- 67 men
- Comparison
- SCG eV̇O2peak vs gold standard V̇O2peak cycle ergometer test
- Outcome
- Agreement between SCG eV̇O2peak and V̇O2peak
- Follow-up
- Baseline
Methodological detailsbefore-and-after 14-week lifestyle intervention, single-site (Folk high school)
- Before-and-after 14-week lifestyle intervention
- Single-site (Folk high school)
Performance
V̇O2peak agreement
bias
0.3 ± 1.0 ml·min-1·kg-1
By group
As reported in the abstract
- Pearson's correlation between methods
- r = 0.78 (p < 0.0001)
- Standard error of estimate (SEE)
- 5.0 ml·min-1·kg-1
Further findings
| Outcome | SCG eV̇O2peak | V̇O2peak | P value |
|---|---|---|---|
| Change in V̇O2peak · 14 weeks | 2.6 ± 0.8 ml·min-1·kg-1 | 3.3 ± 0.9 ml·min-1·kg-1 | intervention p < 0.0001, method p = 0.939 and interaction p = 0.125 |
| Absolute increase | 93 ± 76 ml·min-1 | 175 ± 78 ml·min-1 |
- Change in V̇O2peak: n = 52
Change in body mass · 14 weeks
- Body mass reduced
- 6.6 ± 1.4 kg (p < 0.0001)
- n = 52
Correlation between methods' changes · 14 weeks
- Relative V̇O2peak changes
- r = 0.37 (p < 0.05)
- Absolute V̇O2peak changes
- r = 0.10 (p = 0.402)
Original publication
V̇O2peak estimation in people with overweight and obesity before and after a 14-week lifestyle intervention. Int J Obes (Lond). Published 20 January 2025. doi:10.
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