Proceedings of The Physiological Society

Europhysiology 2018 (London, UK) (2018) Proc Physiol Soc 41, PCA198

Poster Communications

Standardized scores show similar gender differences in jumping ability and inspiratory strength in healthy elderly

A. Roldán1, E. García-Domínguez1, C. Blasco-Lafarga1, A. Cordellat Marzal1, P. Monteagudo1, N. Blasco-Lafarga2, M. Gómez-Cabrera3

1. Physical Education and Sports Department, University of Valencia, Valencia, Spain. 2. Primary Health Centre in Peset-Hospital area, Valencia, Spain. 3. Physiology Department, University of Valencia, Valencia, Valencia, Spain.

  • Figure 1. Confidence Interval (95%) plot for MIP, CMJ Height and relative power comparing men and women (standardized scores).

Increasing importance of Rate-of-Force-Development (RFD) in the elderly (1) motivates the introduction of some new variables. As a consequence, functional training and testing may include the Maximum Inspiratory Pressure (MIP) and the performance in a Countermovement Jump (CMJ) when talking about respiratory or functional capacity respectively. Previous studies have already shown the influence of gender in these strength capacities, but normative data are still scarce in healthy and active elderly, mainly regarding the elastic power (height and relative power (2) in the CMJ). Moreover, to our knowledge, this is the first study to combine their testing, and to standardize the scores so as to look for gender similarities and differences on both neuromuscular capacities. 24 non-smokers healthy elderly (9 men: 69.81±4.19 years; 15 women; 72.41±4.21 years), undergoing a multicomponent exercise training program for at least one year, were assessed for body composition, blood pressure and MIP (3), and for CMJ (4) one week later. Student-T tests for independent samples were conducted after testing for normality, and once standardized, the Confidence Intervals (95%) were calculated and graphically plot for gender and muscular capacity comparisons. As expected, despite the aging process, men displayed always significantly larger strength (MIP: 84.78±16.33 vs 54.13±15.39 cmH2O; Height: 18.46±4.60 vs 11.15±3.00 cm; and Relative Power: 35.71±3.52 vs 25.47±3.88 w*kg-1; p=0.000). Standardized data and the plot of CI (95%) showed how similar were the scores and the influence of gender despite assessing RFD through such different muscular capacities (figure 1). Moreover, relative power seems more appropriate to assess elastic power due to gender differences in body composition. Standardizing the scores allowed us to find out similarities in the muscle strength from different muscular systems, although MIP for men and women in our study was a bit lower considering the average population for their age and gender (normative ranges: 71-135 vs 39-91 cmH2O respectively) (5). New studies will display normative data for the jumping capacity in active elderly, helping researchers to understand this finding.

Where applicable, experiments conform with Society ethical requirements