A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Sedentary Thresholds for Accelerometry-Based Mean Amplitude Deviation and Electromyography Amplitude in 7–11 Years Old Children (2019)
Gao, Y., Haapala, E. A., Vanhala, A., Sääkslahti, A., Rantakokko, M., Laukkanen, A., Pesola, A. J., Rantalainen, T., & Finni, T. (2019). Sedentary Thresholds for Accelerometry-Based Mean Amplitude Deviation and Electromyography Amplitude in 7–11 Years Old Children. Frontiers in Physiology, 10, Article 997. https://doi.org/10.3389/fphys.2019.00997
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Gao, Ying; Haapala, Eero A.; Vanhala, Anssi; Sääkslahti, Arja; Rantakokko, Merja; Laukkanen, Arto; Pesola, Arto J.; Rantalainen, Timo; Finni, Taija
Lehti tai sarja: Frontiers in Physiology
eISSN: 1664-042X
Julkaisuvuosi: 2019
Volyymi: 10
Artikkelinumero: 997
Kustantaja: Frontiers Media
Julkaisumaa: Sveitsi
Julkaisun kieli: englanti
DOI: https://doi.org/10.3389/fphys.2019.00997
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/65343
Tiivistelmä
We investigated the ability of energy expenditure, movement sensing, and muscle activity to discriminate sedentary and non-sedentary activities in children. Thirty-five 7–11-year-old children participated in the study. Simultaneous assessment of oxygen uptake (V̇O2), triaxial accelerometry, and thigh muscle electromyography (EMG) were performed during eight different sedentary and non-sedentary activities including lying down, sitting-, standing-, and walking-related activities, which were performed in a random order. Mean values of V̇O2, accelerometry, and EMG from the concurrent 2 min epochs during each activity were computed. Resting energy expenditure (REE) was measured during 30 min supine rest. Directly measured metabolic equivalent of tasks (METs, V̇O2 in activities/V̇O2 in REE) were calculated for each activity. Mean amplitude deviation (MAD) was computed for accelerometry. EMG was normalized for mean muscle activity during self-paced walking. The classification accuracy of METs, MAD, and EMG to discriminate sedentary activities from physical activities was investigated by receiver operating characteristic curves and optimal cut-offs based on maximal sensitivity and specificity. Mean (SD) REE was 5.0 ± 0.8 ml/kg/min. MET, MAD, and EMG values ranged from 1.0 to 4.9, 0.0020 to 0.4146 g, and 4.3 to 133.9% during lying down and walking at 6 km/h, respectively. Optimal cut-offs to discriminate sedentary activities from non-sedentary activities were 1.3 for METs (sensitivity = 82%, specificity = 88%), 0.0033 g for MAD (sensitivity = 80%, specificity = 91%), and 11.9% for EMG (sensitivity = 79%, specificity = 92%). In conclusion, this study provides applicable thresholds to differentiate sitting and standing and sedentary and non-sedentary activities based on METs, MAD, and EMG in young children.
YSO-asiasanat: fyysinen aktiivisuus; energiankulutus (aineenvaihdunta); elektromyografia; istuminen; seisominen; lapset (ikäryhmät)
Vapaat asiasanat: resting energy expenditure; accelerometry; electromyography; sitting; standing; posture
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Lasten fyysinen aktiivisuus ja liikkumattomuus. Liikkumattomuuden raja-arvot ja luokkatilan mahdollisuudet istumisen vähentämisessä
- Juutinen, Taija
- Opetus- ja kulttuuriministeriö
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2019
JUFO-taso: 1