The influence of fitness and body weight on preferred exercise intensity

  • Malatesta D
  • Simar D
  • Dauvilliers Y
 et al. 
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Abstract

PURPOSE: The purpose of this investigation was to determine the individual and combined effects of aerobic fitness and body weight on physiological responses, perceived exertion, and speed variables during self-selected steady-state treadmill (TM) walking in 60 healthy college-age women. METHODS: The women were placed into one of four categories based on body mass index (BMI) and fitness level, assessed by a graded TM test. Subjects walked continuously on a TM at a self-selected pace for 15 min at a 2.5% grade. The dependent variables were oxygen uptake (VO(2)), HR, percentage of maximal oxygen uptake (VO(2max)), percentage of HRmax (%HRmax), RPE for the overall body, TM belt speed, and total energy expenditure (EE). RESULTS: There were no significant interactions or body weight main effects for any of the dependent variables. However, lower-fitness subjects walked at a TM speed that resulted in a higher (P < 0.0005) VO(2max) (52.4 vs 39.56) than the higher-fitness subjects. CONCLUSION: These findings suggest that fitness, and not body weight, influences preferred exercise intensity as measured by VO(2max) during TM walking in college-age women. The self-selected walking speed did not result in an intensity, as determined by VO(2max), that is consistent with the enhancement of cardiorespiratory fitness for higher-fitness women regardless of body weight.

Author-supplied keywords

  • *ANAEROBIC threshold
  • *ATHLETES
  • *BIOTELEMETRY
  • *HEART rate monitoring
  • *MARATHON running
  • *PHYSICAL fitness
  • *RELAY racing
  • ADULTHOOD
  • Affect
  • Affective valence
  • BORG RATING SCALE OF PERCEIVED EXERTION
  • COMPARATIVE studies
  • COURSE-ATHLETISME
  • COURSE-DE-FOND
  • Displeasure
  • Elderly
  • Exercise adherence
  • Exercise intensity
  • Exercise regulation
  • Gait
  • Gait reorganization
  • Homogeneity
  • Intensity
  • Inter-individual variability
  • Isokinetic
  • Isometric
  • LACTATE
  • LONG DISTANCE RUNNING
  • Leg muscles
  • MIDDLE age
  • Maximal oxygen uptake
  • Oxygen consumption
  • PERCEPTION-DE-L-EFFORT
  • Perceived exertion
  • Physical activity
  • Pleasure
  • RPE
  • SEUIL-ANAEROBIE
  • SPORTIF-LOISIR
  • Self-paced walking
  • Self-selected exercise
  • TELEMETRY
  • VITESSE
  • Ventilatory threshold
  • Walking
  • YOUNG adults
  • aerobic exercise
  • affect
  • cognitive factors
  • exercise intensity
  • fitness
  • flexibility exercise
  • functional fitness
  • health
  • interindividual variability
  • neuromotor exercise
  • physical
  • physical activity
  • practice guidelines
  • prescription
  • resistance exercise

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Authors

  • Davide Malatesta

  • David Simar

  • Yves Dauvilliers

  • Robin Candau

  • Helmi Ben Saad

  • Christian Préfaut

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