在初次指导两周后，大多数人并未正确进行家庭锻炼——一项评估者不知情的研究。
The majority are not performing home-exercises correctly two weeks after their initial instruction-an assessor-blinded study.
作者信息
Faber Mathilde, Andersen Malene H, Sevel Claus, Thorborg Kristian, Bandholm Thomas, Rathleff Michael
机构信息
Kjellerup Fysioterapi og Træning , Kjellerup , Denmark.
Fysioterapeutisk Specialistteam , Aarhus , Denmark.
出版信息
PeerJ. 2015 Jul 21;3:e1102. doi: 10.7717/peerj.1102. eCollection 2015.
Introduction. Time-under-tension (TUT) reflects time under load during strength training and is a proxy of the total exercise dose during strength training. The purpose of this study was to investigate if young participants are able to reproduce TUT and exercise form after two weeks of unsupervised exercises. Material and Methods. The study was an assessor-blinded intervention study with 29 participants. After an initial instruction, all participants were instructed to perform two weeks of home-based unsupervised shoulder abduction exercises three times per week with an elastic exercise band. The participants were instructed in performing an exercise with a predefined TUT (3 s concentric; 2 s isometric; 3 s eccentric; 2 s break) corresponding to a total of 240 s of TUT during three sets of 10 repetitions. After completing two weeks of unsupervised home exercises, they returned for a follow-up assessment of TUT and exercise form while performing the shoulder abduction exercise. A stretch sensor attached to the elastic band was used to measure TUT at baseline and follow-up. A physiotherapist used a pre-defined clinical observation protocol to determine if participants used the correct exercise form. Results. Fourteen of the 29 participants trained with the instructed TUT at follow-up (predefined target: 240 s ±8%). Thirteen of the 29 participants performed the shoulder abduction exercise with a correct exercise form. Seven of the 29 participants trained with the instructed TUT and exercise form at follow-up. Conclusion. The majority of participants did not use the instructed TUT and exercise form at follow-up after two weeks of unsupervised exercises. These findings emphasize the importance of clear and specific home exercise instructions if participants are to follow the given exercise prescription regarding TUT and exercise form as too many or too few exercise stimuli in relation to the initially prescribed amount of exercise most likely will provide a misinterpretation of the actual effect of any given specific home exercise intervention.
引言。张力下时间（TUT）反映了力量训练期间承受负荷的时间，是力量训练中总运动剂量的一个指标。本研究的目的是调查年轻参与者在进行两周无监督锻炼后是否能够重现TUT和锻炼形式。材料与方法。该研究是一项评估者盲法干预研究，有29名参与者。在初始指导后，所有参与者被指示每周三次使用弹性运动带在家中进行两周无监督的肩部外展锻炼。参与者被指导以预定义的TUT（3秒向心收缩；2秒等长收缩；3秒离心收缩；2秒休息）进行锻炼，在三组每组10次重复中，TUT总计240秒。在完成两周无监督的家庭锻炼后，他们返回进行肩部外展锻炼时TUT和锻炼形式的随访评估。在基线和随访时，使用附着在弹性带上的拉伸传感器测量TUT。一名物理治疗师使用预定义的临床观察方案来确定参与者是否采用了正确的锻炼形式。结果。29名参与者中有14名在随访时按照指示的TUT进行训练（预定义目标：240秒±8%）。29名参与者中有13名以正确的锻炼形式进行肩部外展锻炼。29名参与者中有7名在随访时按照指示的TUT和锻炼形式进行训练。结论。在进行两周无监督锻炼后的随访中，大多数参与者未采用指示的TUT和锻炼形式。这些发现强调了清晰明确的家庭锻炼指导的重要性，如果参与者要遵循关于TUT和锻炼形式的给定锻炼处方，因为与最初规定的运动量相比，过多或过少的运动刺激很可能会对任何特定家庭锻炼干预的实际效果产生误解。
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