Comparison between two methods of variable resistance training on body composition, muscular strength and functional capacity among untrained males
Several studies have shown a positive association between variable resistance training (VRT) and improvements in muscular performance. However, the effects of VRT on body composition among untrained individuals remain unclear. The objective of this study was to examine the comparison between of...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.unisza.edu.my/7003/1/FH02-FP-20-39710.pdf http://eprints.unisza.edu.my/7003/ |
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| Summary: | Several studies have shown a positive association between variable
resistance training (VRT) and improvements in muscular performance.
However, the effects of VRT on body composition among untrained
individuals remain unclear. The objective of this study was to examine the
comparison between of methods of VRT on body composition, muscular
strength and functional capacity among untrained male adults. Fifty healthy
untrained males (age: 21.5 ± 1.95 years) were selected randomly and
assigned into three groups: combined weight and chain (WC), combined
weight and elastic band (WE), and free-weight (CG). All three groups
completed 12 weeks of high intensity resistance training (70-80% of onerepetition maximum) with three sets of 8-12 repetitions two times per week.
Approximately 65% of the whole resistance was provided by free-weights,
while the other 35% of the resistance was provided by chains and elastic
bands for the WC and WE groups, respectively. Dependent variables
including body composition, muscular strength and functional capacity
using bioelectrical impedance analyzer, one-repetition maximum and
maximum repetitions to muscular fatigue were measured, respectively in
pre-test, post-test 1 (week 6) and post-test 2. Significance level was set at P
< 0.05. No differences existed among all groups at baseline for depended variables. A mixed model ANOVA with repeated measurements analysis
revealed that although there were not significant differences in body
composition among the groups (P > 0.05), all groups showed a significant
reduction in fat mass and significant increase in fat-free mass during and
after the intervention (P = 0.0001), and these differences were
insignificantly greater in WE and WC groups compared with CG group.
Furthermore, all three groups showed significant improvements in muscular
strength and functional capacity during and after intervention (P = 0.0001),
and muscular strength and functional capacity were greater in WE and WC
groups compared with the CG group, but there were not significant
differences in muscular strength and functional capacity between WE and
WC groups. However, the WE group showed insignificantly more
improvement in muscular strength and functional capacity compared with
the WC group during and after the intervention. The results of this study
show that VRT has a slightly better effect than free-weight to improve body
composition during and after 12 weeks intervention. Also, WE training had
a slightly better effect than WC training in improving muscular strength and
functional capacity during and after 12 weeks of VRT among untrained
male adults. |
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