Modern Taiho-jutsu in Japan has a competitive element (in protective gear). I have some reservations about this, but as contemporary Japan is a very safe and peaceful country, these competitions may provide some additional motivation through competitive rivalry between police stations and departments.
The following book covers the competitive aspects of Taiho-jutsu. This section is about safety, preparation for and how to conduct Taiho-jutsu classe. It is meticulous, as one would expect:
Taiho-jutsu Shiai Kara Shinpan Made
逮捕術 試合から審判まで
Arresting techniques - from basics to matches (1997)
P.13
Safety Management in Training
1 Personnel Management
(1) Trainees' health, technical skills, physical strength, rank, personality, level of participation in training, and medical history should be understood to discover those with training deficiencies. If deemed necessary, trainees should undergo a medical examination by a doctor in advance.
(2) Trainees should be scheduled based on their age, physical strength, and skills, and should be fully prepared.
(3) Trainees should be organised into groups and trained in a controlled manner, taking into consideration the number of trainees, training location, and training content.
(4) Trainees should not be trained in unreasonable or dangerous ways.
(5) Establish a system of guidance and supervision during training, and always keep an eye on the trainees' movements. If any abnormality is found, measures such as halting training should be taken.
(6) Research emergency measures and establish an emergency measures system.
(7) Trainees should be trained according to their skills and faithful to the basics.
(
When a person who has not normally participated in training participates in training, he/she should not be forced to do sudden training.
(9) Elderly people should not be allowed to overestimate their physical strength.
2. Physical Management
(1) Dojo and gymnasium floors, tatami mats, floorboards, lighting, lighting, ventilation, ventilation, damp-proofing and fire extinguishing equipment shall be carefully inspected, and if any damage is found, measures or procedures shall be promptly taken to repair or maintain the equipment.
(2) Be sure to inspect equipment, protective gear, etc. regularly or before and after use, and if any abnormality is found, prohibit its use or allow it to be used only after repairs.
P.14
3) Items not necessary for training should be removed from the dojo or gymnasium as much as possible.
(4) In cold regions, pay particular attention to keeping warm during the winter.
(5) Clothing, equipment, and protective gear should be worn or used properly according to the trainee's physique.
3. Management of Training
Training should be managed according to the physical strength, skills, and level of proficiency of the trainee, such as for new recruits, general police officers, and special training personnel.
(1) After trainees have completed a sufficient number of basic warm-up exercises, including stretching, to synchronise their physical functions and enable them to perform at their best, they should undergo repetitive training in ukemi, footwork, body movement, and strength training to improve their flexibility, agility, and endurance.
Stretch (ストレッチ) Next to picture
Running (ランニング) Next to picture”
P.15
2) Trainees should master the basics of attack and defence through repeated mutual training of "mae tsuki"(front thrust) and "mae keri" (front kick)
(3) Training in protective gear should be done after checking that they are properly dressed and that they are wearing socks, arrest shoes, hand towels, etc., and after practicing forward and backward turns and ukemi to familiarise the body with the protective gear.
Ukemi (next to illustration)
4)When multiple trainees are trained at the same time, sufficient distance and spacing should be maintained depending on the type and content of the training.
5) When training in "striking" and "reverse techniques," etc., have the instructor demonstrate the location, method, and level of striking, as well as the method of performing (joint) reverse techniques and the evaluation of their effectiveness, and have the trainees understand the limitations before training.
P.13
I 訓練上の安全管理
1人的管理
（1）訓練者の健康状態、術科技能、体力、級位、性格、訓練参加
度及び既往症等をは握して、訓練上欠陥のある者の発見に努めること。特に必要があると認めるときは、事前に医師の健康診断を受けさせること。
（2）訓練者の年齢、体力及び技能等によって無理のない計画をた
て、十分な準備のもとに行わせること。
（3） 訓練に際しては、訓練者の数、訓練場所及び訓練の内容等を考慮して、適宜、班を編成して統制ある訓練を行わせること。
（4） 訓練に際しては、無理な方法や危険な技等は行わせないご
と。
（5） 訓練中の指導、監視体制を確立し、常に訓練者の動静に注意し、異常を認めたときは、訓練を中止させる等の措置をとること。
（6） 救急措置の研究及び救急措置体制の整備をしておくこと。
（7） 技能に応じて、かつ、基本に忠実な訓練を行わせること。
（8）平素、訓練から遠ざかっていた者が訓練に参加したときは、急激な訓練を行わせないこと。
（9） 高年齢者には、体力の過言をさせないこと。
2 物的管理
（1） 道場及び体育館等の床面、畳、腰板部、照明、採光、通風、換気、防湿及び消火設備等を入念に点検し、破損箇所等を発見したときは、早急に補修、整備の措置又は手続きをとること。
（2）用具、防具等は、定期に又は使用前後に必ず点検し、異常を認めたときは、使用を禁止し、又は補修した後に使用させるこ
P.14
3） 道場又は体育館内には、訓練に不要な物品をできるだけ置かないようにすること。
(4)
寒冷地では、特に冬期間の保温に留意すること。
（5）服装、用具及び防具等は、それぞれ訓練者の体格に合った物を正しく着装又は使用すること。
3 訓練実施上の管理
初任科、一般署員及び特練員のように、訓練対象者の体力、技能及び練度に応じた内容で訓練管理を行う。
（1） 訓練者には身体機能を同調させ最高の能力を発揮させるため、ストレッチ等をとり入れ、基本的な準備運動を十分に実施した後、さらに受身、足さばき、体さばき、筋力トレーニングにより、柔軟性、敏捷性、持久性をつけるべく、反復訓練を行う。
ストレッチ
ランニング
p.15
2）訓練者には、「前突き」及び「前けり」の反復相互訓練によって、攻撃、防ぎよの基本訓練を習熟させること。
（3）防具を着装して行う訓練は正しい着装とソックス、逮捕術シューズ、手拭い等を確認した後、防具と体をなじませるため、前方、後方回転及び受身をした後に行うこと。
受身
4）多数の訓練者を同時に訓練させるときは、訓練の種目、内容により、必要な距離、間隔を十分にとらせること。
5） 「打突」並びに「逆わざ」等の訓練を行わせるときは、指導者に打突の部位、方法及びその程度並びに逆わざの施術の方法及びその効果の判断等について、範示させ、その限界を理解させたうえで訓練を行わせること。
Note: This book was (published) Compiled by the:
Keisatsu Daigakkō-jutsu-ka Kyōyō-bu-hen
警察大学校術科教養部 編
National Police Academy's Practical Training Department.
and remains their copyright.