The Relationship of Lactate to 1-Mile Walk Performance in Women Aged 60 to 70 Years

Abstract

The purpose of this study was to examine the relationship between selected physiological variables and lactate accumulation at the end of a l-mile walk test (MWT) in older women (mean ± SD: 64.6 ± 3.1 years). Seventeen women with a peak (ml · kg-1 · min-1) of 21.1 ± 4.2 volunteered to participate. Physiological data were obtained via a COSMED K2 miniaturized O2 analyzer with telemetric capabilities during a maximal treadmill (TM) test and MWT. Blood samples were obtained from the ear lobe for lactale analysis immediately before and after the treadmill test and MWT. Subjects performed the MWT in 15.4 ± 1.4 min at an intensity of 76% of peak and 86% of HRmax. The blood lactate accumulated at the end of the MWT was 2.61 ± 1.47 mmol/L. Peak lactate following the maximal treadmill test was 3.8 ± 1.42 mmol/L. HR during the test was significantly related with blood lactate (r= .65, p< .01). The lactate values observed during the lest suggest that the I-mile walk test is a suitable field testing procedure for older women.

Effect of Wearing the Cosmed K4b2 Metabolic System on 1 Mile Walking Performance in Older Adults

“…The walking times for RFWT and RFWTCosmed for older women were similar (16.18 ±2.22 min and 16.0 ± 1.93 min, repectively) and comparable to other studies (Fenstermaker et al, 1992;Bazzano et al, 1998). 1-mile walking times in older women (age 69.4±4.2 years) were 16.99 ± 2.17 min and 16.73 ± 2.12 min (Fenstermaker et al, 1992) for walk 2 and 3 in a series of 3.…”

“…19.01 ± 4.18 min). Bazzano et al (1998) reported walking times of 15.4±1.4 min for older women (64.6±3.1 years). In our study, the log transformed LoA for walking time showed individuals with relatively long walk times to have greater variation when performing the second walk.…”

Salivary Immunoglobulin A responses to 6-minute walk test in elderly women

“…Together, the [La] and HR responses indicate that the 6 MWT was performed at sub-maximal effort. Previous authors reported that the blood lactate and the HR max during the 1-Mile walk test have a direct relationship in healthy elderly adults (Bazzano, Cunningham, Cama, & Falconio, 1998). These background and the data of the current study, suggest that the metabolic variable (lactate) and heart rate are good indicators to control the intensity during the field exercise testing at least in apparently healthy elderly people.…”

Effects of Endurance Training on Selected Parameters of Immune Function in Elderly Women

“…Although using indirect calorimetry to estimate VO 2max , is a limitation of this study, Bazzano et al [23] have determined that the 1-mile walk test is a suitable field testing procedure for elderly women, resulting in valid estimates of VO 2max . Despite the increase in cardiovascular fitness, there were few group differences noted for immune parameters after the 10-week period.…”

“…This test was completed again after 10 weeks of training. Bazzano et al [23] determined that this is a suitable field testing procedure for elderly women.…”