Effects of 9 Weeks of High- or Moderate-Intensity Training on Cardiorespiratory Fitness, Inhibitory Control, and Plasma Brain-Derived Neurotrophic Factor in Danish Adolescents-A Randomized Controlled Trial.
Scand J Med Sci Sports
; 34(8): e14703, 2024 Aug.
Article
de En
| MEDLINE
| ID: mdl-39054765
ABSTRACT
PURPOSE:
The primary aims of this study were to examine the effects of 9 weeks of aerobic training, comprising three 30-min sessions per week, on VÌO2max, inhibitory control, and plasma brain-derived neurotrophic factor (BDNF) levels among adolescents aged 16-19 years.METHODS:
One hundred twenty-one untrained or recreationally active adolescents from a Danish high school were enrolled in the study, with 58 females (17.8 ± 0.8 years) and 27 males (18.0 ± 0.9 years) completing it. Participants were randomly divided into three groups performing aerobic training at either moderate-intensity (MIT 60%-70% heart rate reserve [HRR]) or high-intensity (HIT 80%-100% HRR) or a passive control group (CON) continuing their habitual lifestyle. Both the training groups exercised for 3×30 min per week for 9 weeks using a combination of cycling and running. Before and after the intervention period maximal oxygen uptake (VÌO2max) and the primary outcomes (inhibitory control measured by a modified flanker task, and resting plasma levels of BDNF) were evaluated.RESULTS:
After the intervention period, the HIT group demonstrated a larger increase in VÌO2max compared to both the CON and MIT groups, while no significant effects were observed on inhibitory control or plasma BDNF levels in any training group. However, compared to the CON group, the HIT group exhibited a tendency for greater improvement in the flanker interference score (accuracy), attributable to enhanced accuracy on the incongruent stimuli from pre to post.CONCLUSION:
Aerobic training in adolescents increased cardiorespiratory fitness in an intensity-dependent manner, but no clear effects were observed on neither inhibitory control nor resting plasma BDNF levels. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov NCT02075944.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Consommation d'oxygène
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Facteur neurotrophique dérivé du cerveau
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Capacité cardiorespiratoire
Limites:
Adolescent
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Adult
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Female
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Humans
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Male
Pays/Région comme sujet:
Europa
Langue:
En
Journal:
Scand J Med Sci Sports
/
Scand. j. med. sci. sports
/
Scandinavian journal of medicine and science in sports
Sujet du journal:
MEDICINA ESPORTIVA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Danemark
Pays de publication:
Danemark