Effects of a Single Bout of Resistance Training Session on Hormonal Response in Pre-pubertal and Pubertal Boys
: Resistance training induces strength gains in both children and adolescents. Exercise training is linked to anabolic functions through the GH-IGF-I axis. This has been demonstrated in studies showing a higher activity of GH and IGF-I in fitter adolescents and adults. Exercise also stimulates pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) that suppress the GH-IGF-I axis. This has been observed in endurance-type training, while resistance training has received less attention.
Boys experience a significant physiological muscle-growth change during puberty that is associated with increases in boys androgen levels. How maturation affects the hormonal response to resistance training in boys is unclear. Therefore, the purpose of the study is to compare the acute effects of a single bout of resistance training on hormones and pro-inflammatory cytokines in pre-pubertal and pubertal boys.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Preliminary measurements:
Preliminary testing will include anthropometric measurements of body mass, height, body fat percentage, and lean leg volume (LLV). The maturation stage will be determined according to the Tanner scale. There will also be an assessment of maximal strength testing to determine exercise intensity for each individual. Two familiarization sessions will be conducted for muscular strength before the muscular strength testing session.
Main trial A venous blood sample will be collected pre-exercise at resting condition. The trial will start with a standardized warm-up followed by a short (20-30 min), high-intensity whole-body resistance training session. Venous blood samples will be collected immediately after the completion of the training session and during the recovery period.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Forventet)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Apostolos Theos, PhD
- Telefonnummer: +46702811565
- E-mail: apostolos.theos@umu.se
Studiesteder
-
-
Västerbotten
-
Umeå, Västerbotten, Sverige, 901 87
- Umeå Movement and Exercise Laboratory, Umeå University
-
Kontakt:
- Apostolos Theos, PhD
- Telefonnummer: +46702811565
- E-mail: apostolos.theos@umu.se
-
Kontakt:
- Tobias Stenlund, PhD
- Telefonnummer: +46907868040
- E-mail: tobias.stenlund@umu.se
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Healthy boys (n=40)
- Physically active, defined as a minimum of 2 years experience in a sports club
- Biological age range: 20 pre-pubertal (Tanner I-II) - 20 pubertal (Tanner III-IV) boys
- No previous experience of structured resistance training
Exclusion Criteria:
- Chronic diseases that affect full participation
- Injuries that limit full participation
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Andet
- Tildeling: Ikke-randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Resistance Training Session
Resistance training.
Heavy resistance training.
10 reps x 3 set of upper- and lower-body resistance exercises
|
Both groups will perform a resistance training session consisted of 10 reps x 3 set of upper- and lower-body resistance exercises.
|
|
Ingen indgriben: Control
Control activity.
None-exercising.
30 min of rest
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Growth Hormone Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood Concentration of Growth Hormone
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Growth Hormone Post exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood Concentration of Growth Hormone
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Growth Hormone 15 minutes post exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood Concentration of Growth Hormone
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Growth Hormone 30 minutes post exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood Concentration of Growth Hormone
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Insulin-like Growth Factor-1 Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Insulin-like Growth Factor-1
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Insulin-like Growth Factor-1 Post exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Insulin-like Growth Factor-1
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Insulin-like Growth Factor-1 15 minutes Post exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Insulin-like Growth Factor-1
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Insulin-like Growth Factor-1 30 minutes Post exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Insulin-like Growth Factor-1
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Cortisol Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Cortisol
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Cortisol Post exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Cortisol
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Cortisol 15 minutes Post exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Cortisol
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Cortisol 30 minutes Post exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Cortisol
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Testosterone Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of testosterone
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Testosterone Post Exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of testosterone
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Testosterone 15 minutes Post Exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of testosterone
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Testosterone 30 minutes Post Exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of testosterone
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Interleukin-6 Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Interleukin-6
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Interleukin-6 Post Exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Interleukin-6
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Interleukin-6 15 minutes Post Exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Interleukin-6
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Interleukin-6 30 minutes Post Exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Interleukin-6
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Interleukin-1 alpha Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Interleukin-1 alpha
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Interleukin-1 alpha Post Exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Interleukin-1 alpha
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Interleukin-1 alpha 15 minutes Post Exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Interleukin-1 alpha
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Interleukin-1 alpha 30 minutes Post Exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Interleukin-1 alpha
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Tumor Necrosis Factor alpha Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Tumor Necrosis Factor alpha
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Tumor Necrosis Factor alpha Post Exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Tumor Necrosis Factor alpha
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Tumor Necrosis Factor alpha 15 minutes Post Exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Tumor Necrosis Factor alpha
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Tumor Necrosis Factor alpha 30 minutes Post Exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Tumor Necrosis Factor alpha
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
|
Sex Hormone Binding Globulin Baseline
Tidsramme: Baseline testing before the exercise intervention (Pre values)
|
Blood concentration of Sex Hormone Binding Globulin
|
Baseline testing before the exercise intervention (Pre values)
|
|
Change from Baseline Baseline Sex Hormone Binding Post Exercise
Tidsramme: Right after the completion of the exercise intervention (Post values)
|
Blood concentration of Sex Hormone Binding Globulin
|
Right after the completion of the exercise intervention (Post values)
|
|
Change from Baseline Baseline Sex Hormone Binding 15 minutes Post Exercise
Tidsramme: 15 minutes after the completion of the exercise intervention (Post-15 values)
|
Blood concentration of Sex Hormone Binding Globulin
|
15 minutes after the completion of the exercise intervention (Post-15 values)
|
|
Change from Baseline Sex Hormone Binding Globulin 30 minutes Post Exercise
Tidsramme: 30 minutes after the completion of the exercise intervention (Post-30 values)
|
Blood concentration of Sex Hormone Binding Globulin
|
30 minutes after the completion of the exercise intervention (Post-30 values)
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Apostolos Theos, PhD, Umeå University
Datoer for undersøgelser
Studer store datoer
Studiestart (Forventet)
Studiestart
Primær færdiggørelse (Forventet)
Primær færdiggørelse
Studieafslutning (Forventet)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 2020-03179
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
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