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Nøyaktighet av prediksjonsligninger for å beregne maksimal styrke

7. november 2026 oppdatert av: Wolfgang Kemmler, PhD, University of Erlangen-Nürnberg Medical School

Nøyaktigheten av en ny prediksjonsligning for å beregne maksimalt én repetisjon (1RM) hos trente og utrente unge og gamle voksne

Resistance exercise training (RT) is a key component of health related exercise programs. However, an accurate specification of RT load prescription is essential for effective and safe achievement of training aims. Proper specification of exercise intensity might be the most critical issue when designing RT protocols for adults. One repetition maximum tests (1RM) have been considered the "gold standard" of dynamic maximum strength evaluation. Although the argument of increased risk of injuries and adverse effects with 1RM testing in older people has been rejected by several studies , limited motivation to lift maximum loads, requirement for high test effort, time constraints, and interruption of the continuity of the training process aggravate the frequent application of 1RM tests particularly in non-athletic RT. 1RM prediction equations that use the load and number of repetitions completed to fatigue (RTF) to predict repetition maximum might be a reliable and feasible option to 1RM testing. Thus, the primary aims of this study were to evaluate the predictive accuracy of current RTF equations and to develop an equation that more accurately predicts 1RM from RTF tests.

Studieoversikt

Status

Aktiv, ikke rekrutterende

Forhold

Intervensjon / Behandling

Studietype

Observasjonsmessig

Registrering (Antatt)

120

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Tyskland
      • Erlangen, Tyskland, 91054
        • Institute of Radiology, University Hospital NErlangen

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 85 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The study population consists of resistance trained and untrained women and men 18 to 35 or 60-85 years old that are able to complete 1RM and RTF tests without endangering their health

Beskrivelse

Inclusion Criteria:

  • 18 to 35 years old
  • 60 to 85 years old

Exclusion Criteria:

  • Contraindication for one repetition maximum tests
  • musculoskeletal injuries that may prevent a reliable and safe assessment of the 1RM and RTF tests

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Observasjonsmodeller: COHORT
  • Tidsperspektiver: CROSS_SECTIONAL

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Maximum load, one repetition maximum, leg press
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the leg press exercise
At baseline - no follow up tests

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Maximum load lifted at 5-8RM, leg press
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg press exercise
At baseline - no follow up tests
Maximum load lifted at 9-12RM, leg press
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT9-12, in kg) for the leg press exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, leg press
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT13-16, in kg) for the leg press exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, lat pulls
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the latissimus pull exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, lat pulls
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the latissimus pull exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, lat pulls
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the latissimus pull exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, lat pulls
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the latissimus pull exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, triceps dips
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the triceps dips exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, triceps dips
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the triceps dips exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, triceps dips
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the triceps dips exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, triceps dips
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the triceps dips exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, trunk extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the trunk extension exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, trunk extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the trunk extension exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, trunk extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the trunk extension exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, trunk extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the trunk extension exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, trunk flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the trunk flexion exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, trunk flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the trunk flexion exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, trunk flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the trunk flexion exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, trunk flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the trunk flexion exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, leg flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the leg flexion exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, leg flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg flexion exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, leg flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the leg flexion exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, leg flexion
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the leg flexion exercise
At baseline - no follow up tests
Maximum load, one repetition maximum, leg extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted once (1RM, in kg) for the leg extension exercise
At baseline - no follow up tests
Maximum load lifted at 5-8 RM, leg extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg extension exercise
At baseline - no follow up tests
Maximum load lifted at 9-12 RM, leg extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 9-12 times (RFT9-12, in kg) for the leg extension exercise
At baseline - no follow up tests
Maximum load lifted at 13-16 RM, leg extension
Tidsramme: At baseline - no follow up tests

Maximum load lifted 13-16 times (RFT13-16, in kg) for the leg extension exercise
At baseline - no follow up tests

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

University of Erlangen-Nürnberg Medical School

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

2. desember 2024

Primær fullføring (Antatt)

30. april 2027

Studiet fullført (Antatt)

31. mai 2027

Datoer for studieregistrering

Først innsendt

1. desember 2024

Først innsendt som oppfylte QC-kriteriene

4. desember 2024

Først lagt ut (Faktiske)

5. desember 2024

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

10. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

7. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Andre studie-ID-numre

  • PREDEQ
  • Physiomed ID 101 (Annen identifikator: UKER - FAU)

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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