Reassembling the Field-based Applicability of the Lactate Threshold for Old Age.
Int J Sports Med
; 2024 Jul 03.
Article
em En
| MEDLINE
| ID: mdl-38959953
ABSTRACT
This study aimed to investigate the applicability of the Lactate Threshold (LT) to predict maximal oxygen uptake (ËVO2max) and demarcate the boundary between the moderate- to heavy-intensity domain (HRm-h) in old age in comparison to the most utilized methods. A cross-sectional validation study was conducted. Participants aged 61 to 77 performed a familiarization procedure, an incremental maximal exercise treadmill test (CPX) for ËVO2max determination, the Six-minute Walk Test (6MWT), and a discontinuous incremental field test for LT determination. Lower (P<0.01) internal effort was required for LT testing (76±8%HRmax) compared to 6MWT (92±9%HRmax). The application of the 6MWT reference equations overestimated ËVO2max by 10-23%. LTs better estimated the ËVO2max (r ≈0.90, SEE ≈3.0] compared to the 6MWT (r=0.68, SEE=5.5). HRm-h determined by the CPX differed (20%; P=0.001) from that obtained by LT. HRm-h stratification indicated participants fall into the very light to the vigorous intensity domains. LT testing is more submaximal than the 6MWT, and is a valuable tool to estimate the ËVO2max in older male adults. Implementation of LT testing in physical activity programs might help improving the quality of aerobic exercise training in older men.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Int J Sports Med
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Espanha