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Nøjagtighed af forudsigelsesligninger til beregning af maksimal styrke

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

Nøjagtighed af en ny forudsigelsesligning til at beregne en gentagelsesmaksimum (1RM) hos trænede og utrænede 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.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Undersøgelsestype

Observationel

Tilmelding (Anslået)

120

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

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

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 85 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

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

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiver: CROSS_SECTIONAL

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
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
Foranstaltningsbeskrivelse
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

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Erlangen-Nürnberg Medical School

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

2. december 2024

Primær færdiggørelse (Anslået)

30. april 2027

Studieafslutning (Anslået)

31. maj 2027

Datoer for studieregistrering

Først indsendt

1. december 2024

Først indsendt, der opfyldte QC-kriterier

4. december 2024

Først opslået (Faktiske)

5. december 2024

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

7. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

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

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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