Optimal loads for power in older men and women using plate-loaded resistance machines

Keri L. Strand, Lucrezia Lucchi, Tamara González Copo, Nicholas P. Cherup, Joseph Signorile

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Background: Age-related decrements in power affect quality of life in older adults; however, no studies have determined the optimal loads that maximize power outputs using the most commonly employed lifting equipment, plate-loaded machines. Methods: Fifteen older men (69.2 ± 6.9 y) and 22 older women (68.9 ± 5.9 y) performed two sessions of strength and power testing. Individuals completed ten plate-loaded exercises to determine their maximum dynamic strengths (1RM) and peak power outputs (PP). Power was tested at 40, 50, 60, 70 and 80% 1RM using a linear position transducer. PP was expressed relative to the highest power produced (PPREL). Results: Multi-joint exercises produced optimal load values at 50–60%1RM for leg press, 50%1RM for chest press, and 40–60%1RM for seated row, with no significant differences among loads for shoulder press. Single-joint exercise optimal loads were seen at 50–60% for hip adduction, 50–70%1RM for calf raise, 60–80%1RM for biceps curl, and 50–80%1RM for triceps extension, with no significant differences between loads for hip abduction or leg curl. No significant differences were found between sexes for any exercise. Conclusions: Different optimal load ranges are required for individual plate-loaded exercises in older persons. Specifically, multi-joint exercises demonstrated a narrow optimal load range favoring the velocity end of the load-velocity curve, while single-joint exercises produced a wider optimal load range extending into the upper limits of the load end of the curve.

Original languageEnglish (US)
Article number110638
JournalExperimental Gerontology
Volume124
DOIs
StatePublished - Sep 1 2019

Keywords

  • Aging
  • Muscle power
  • Peak power
  • Power training
  • Resistance training

ASJC Scopus subject areas

  • Biochemistry
  • Aging
  • Molecular Biology
  • Genetics
  • Endocrinology
  • Cell Biology

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