PURPOSE We explored the effects of the sense of effort and accompanying perceptions of peripheral discomfort on self-selected cycle power output under two different inspired O2 fractions. METHODS On separate days, eight trained males cycled for 5 min at a constant subjective effort (sense of effort of '3' on a modified Borg CR10 scale), immediately followed by five 4-s progressive submaximal ...

The relative contributions of aging and coronary heart disease to the impairment of functional capacity were assessed in 117 coronary patients, 117 age-matched healthy middle-aged men, and 62 healthy young men by utilizing a multistage treadmill test of maximal exercise. With aging alone, duration of exertion and maximal exercise heart rate were diminished while maximal systolic pressure increa...

The relative contributions of aging and coronary heart disease to the impairment of functional capacity were assessed in 117 coronary patients, 117 age-matched healthy middle-aged men, and 62 healthy young men by utilizing a multistage treadmill test of maximal exercise. With aging alone, duration of exertion and maximal exercise heart rate were diminished while maximal systolic pressure increa...

The purpose of this investigation was to determine the effect of intermittent sub-maximal exercise on percent body fat (%BF) estimated by leg-to-leg bioelectrical impedance analysis (LBIA) in children. Fifty-nine children (29 girls; 30 boys) mean age 9.0 ± 1.3 years participated in this study. LBIA measured %BF values were obtained immediately before and within five minutes after completing an ...

This study investigated the predictability of maximal oxygen intake from three different submaximal heart rates assessed during an initial and follow-up ride on a cycle ergometer. Twenty-four healthy male subjects performed workloads of 600, 750, and 900 kpm's for six minutes on each of two visits to the laboratory. Analysis of variance for a randomised complete blocks design, with subjects con...

background: consumption of energy drinks has become widespread among athletes. the effectiveness of red bull and hype energy drinks on selected indices of maximal cardiorespiratory fitness and blood lactate levels in male athletes was examined in this study. methods: ten male student athletes (age: 22.4 ± 2.1 years, height: 180.8 ± 7.7 cm, weight: 74.2 ± 8.5 kg) performed three randomized maxim...

the purpose of this study was to determine and compare blood lactate, heart rate and blood pressure responses in arm and leg exercises and to determine the relationship between these variables and fatigue time during these two modes of exercises. 8 young professional karate players (mean age 18.90±2.20) volunteered to participate in this study. the subjects completed two ergometers: arm and leg...

the present study aimed to assess changes in resting and maximum heart rates as primary indicators of cardiac autonomic function in metabolic syndrome (mets) patients and to determine their value for discriminating mets from non-mets. 468 participants were enrolled in this cross-sectional study and assessed according to the updated adult treatment panel iii (atp-iii) definition of mets. resting...

23 January 2016, Vol. 106, No. 1 Heart failure (HF) is a major public health challenge, accounting for significant morbidity and premature mortality globally, including in sub-Saharan Africa (SSA).[1] Owing to high prevalence and poor clinical outcomes, HF is associated with recurrent hospitalisation and substantial healthcare expenditure.[2] In contrast to Western countries, where HF is consid...

Background To explore the impact of glycaemic control (HbA1c) on functional capacity during cardio-pulmonary exercise testing in people with type 1 diabetes. Methods Sixty-four individuals with type 1 diabetes (age: 34 ± 8 years; 13 females, HbA1c: 7.8 ± 1% (62 ± 13 mmol/mol), duration of diabetes: 17 ± 9 years) performed a cardio-pulmonary cycle ergometer exercise test until volitional exhau...