The Effect of Training Intensity Loading Method on Muscle Power,Strength,Speed & Body Composition of College Woman Students Who Major in Physical Education

The effects of chromium picolinate (CrPic) supplementation and resistance training (RT) on skeletal muscle size, strength, and power and whole body composition were examined in 18 men (age range 56–69 yr). The men were randomly assigned (double-blind) to groups ( n = 9) that consumed either 17.8 μmol Cr/day (924 μg Cr/day) as CrPic or a low-Cr placebo for 12 wk while participating twice weekly in a high-intensity RT program. CrPic increased urinary Cr excretion ∼50-fold ( P < 0.001). RT-induced increases in muscle strength ( P < 0.001) were not enhanced by CrPic. Arm-pull muscle power increased with RT at 20% ( P = 0.016) but not at 40, 60, or 80% of the one repetition maximum, independent of CrPic. Knee-extension muscle power increased with RT at 20, 40, and 60% ( P < 0.001) but not at 80% of one repetition maximum, and the placebo group gained more muscle power than did the CrPic group (RT by supplemental interaction, P < 0.05). Fat-free mass ( P < 0.001), whole body muscle mass ( P < 0.001), and vastus lateralis type II fiber area ( P < 0.05) increased with RT in these body-weight-stable men, independent of CrPic. In conclusion, high-dose CrPic supplementation did not enhance muscle size, strength, or power development or lean body mass accretion in older men during a RT program, which had significant, independent effects on these measurements.

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Determining the level of physical activity estimated by the Canada Fitness Survey questionnaire using criteria of the International Physical Activity Questionnaire

Biomedical Human Kinetics ◽

10.1515/bhk-2016-0019 ◽

2016 ◽

Vol 8 (1) ◽

pp. 131-136

Author(s):

Alicja Kostencka ◽

Anna Pastuszak ◽

Krzysztof Buśko

Keyword(s):

Physical Activity ◽

Body Composition ◽

Physical Education ◽

Energy Expenditure ◽

International Physical Activity Questionnaire ◽

Activity Levels ◽

Significant Relation ◽

Physical Activity Questionnaire ◽

Vigorous Intensity ◽

Activity Questionnaire

SummaryStudy aim: The aim of the study was to determine the weekly energy expenditure measuring MET/min/week based on data collected through the Canada Fitness Survey (CFS), according to the classification used in the International Physical Activity Questionnaire (IPAQ), and to verify the adopted method to assess the level of physical activity in students of physical education. Material and methods: The study involved 116 female students (21.1 ± 1.6) and 276 male students (21.2 ± 1.7), studying Physical Education at Kazimierz Wielki University. Physical activity (PA) of respondents assessed using the Canada Fitness Survey was converted to energy expenditure in MET/min/week using the criteria established in the IPAQ. Body composition was assessed according to bioelectrical impedance. Results: A significantly smaller fat fraction was observed in the group of students with high physical activity (PA) (p < 0.01). In women, there was a significant relation between FAT% and all analysed characteristics of physical activity: total physical activity (TPA) – 0.274, vigorous intensity (VI) – 0.216, number of days spent on physical activity (DTPA) – 0.199 and number of days spent on vigorous intensity (DVI) – 0.202 (p < 0.05). In men, a significant relation was found between all the analysed tissue components and the adopted variables of PA (FAT% vs. TPA – 0.145, VI – 0.203, DTPA – 0.187; FATkg vs. TPA – 0.123, VI – 0.186, DTPA – 0.178; FATkg vs. DVI – 0.131). BMI significantly correlated with VI (–0.162) and DVI (–0.140), p < 0.05. Conclusions: Based on data collected using the CFS on the type and frequency of PA during a week, we can determine the level of activity in a measurable way, using the IPAQ classification. There is a significant relationship between thus determined physical activity levels and body composition in both women and men, which proves the accuracy of the adopted method of converting weekly energy expenditure to MET/min/week.

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The Exercise Capacity of Blind Children

Journal of Visual Impairment & Blindness ◽

10.1177/0145482x8107500605 ◽

1981 ◽

Vol 75 (6) ◽

pp. 248-251 ◽

Cited By ~ 16

Author(s):

L.W. Jankowski ◽

J.K. Evans

Keyword(s):

Body Composition ◽

Physical Education ◽

Physical Exercise ◽

Pulmonary Function ◽

Exercise Capacity ◽

Aerobic Capacity ◽

Physical Condition ◽

Upper Limbs ◽

Good Physical Condition ◽

Blind Children

The aim of the study was to determine whether blind children in a well-equipped modern institution are receiving enough physical education activities to maintain good physical condition. Toward this end, the physiological characteristics of 20 institutionalized blind children were measured according to body composition, pulmonary function, and tolerance for exercise. The volunteer sample was characterized by “creeping overweight,” weak upper limbs, and a low aerobic capacity. No clinical or physiological contraindications to vigorous physical exercise were observed.

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